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The Atmospheres of Early-Type Stars [[electronic resource] ] : Proceedings of a Workshop Organized Jointly by the UK SERC’s Collaborative Computational Project No. 7 and the Institut für Theoretische Physik und Sternwarte, University of Kiel Held at the University of Kiel, Germany, 18–20 September 1991 / / edited by Ulrich Heber, C. Simon Jeffery
| The Atmospheres of Early-Type Stars [[electronic resource] ] : Proceedings of a Workshop Organized Jointly by the UK SERC’s Collaborative Computational Project No. 7 and the Institut für Theoretische Physik und Sternwarte, University of Kiel Held at the University of Kiel, Germany, 18–20 September 1991 / / edited by Ulrich Heber, C. Simon Jeffery |
| Edizione | [1st ed. 1992.] |
| Pubbl/distr/stampa | Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1992 |
| Descrizione fisica | 1 online resource (XIX, 452 p. 36 illus., 2 illus. in color.) |
| Disciplina | 523.8 |
| Collana | Lecture Notes in Physics |
| Soggetto topico |
Observations, Astronomical
Astronomy—Observations Astrophysics Geophysics Astronomy, Observations and Techniques Astrophysics and Astroparticles Geophysics/Geodesy |
| ISBN | 3-540-46997-4 |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | Galactic B-type Stars -- Non-LTE analyses of B stars -- Galactic B-type supergiants -- On the determination of effective temperature and surface gravity using Strömgren uvbyß photometry -- The mass and helium discrepancy in massive young stars -- A comparison between the orbital masses of early type binary components and masses predicted by stellar evolution -- B-type stars in young clusters -- Chemical abundances in early B-type stars -- The determination of accurate cosmic abundances from B-type stellar spectra -- The origin of distant B-type stars in the galactic halo -- Galactic abundance gradients from ob-type stars in young clusters and associations -- Ionizing radiation from early-type stars -- Abundance patterns in a stars: Carbon and silicon -- Quantitative analysis of A-type supergiants -- Abundances in rapidly rotating a stars -- Statistical equilibrium of Al I/II in a stars and the abundance of aluminium in Vega -- Analyses of B-type stars in the Magellanic Clouds -- The chemical composition of main sequence stars in the Magellanic Clouds -- GHRS observations of O Stars in other galaxies -- The winds of hot stars in M31 and M33 -- Wolf-Rayet stars -- Spectrophotometry of Wolf-Rayet stars -- Near-Infrared Spectroscopy of Galactic Wolf-Rayet Stars -- Luminous Blue Variables -- Observed evolutionary changes in the visual magnitude of the luminous blue variable P Cygni -- Forbidden lines of [Fe II] and [N II] in P Cygni's envelope -- Spectroscopic observational data on P Cygni and comparison with the model of the bistable wind -- The spectroscopy of unusual high luminosity stars: HD 168607 and 6 Cas -- Discrete absorption components in O-type stars -- Analysis of circumstellar spectra of s dor -- Comoving frame calculations for ?-cephei -- Nonradial pulsations of O- and B-stars -- Analysis of line profile variations in pulsating B stars -- Mode identification of pulsating stars from line profile variations with the moment method -- Mode identification in beta Cephei stars from UV observations -- Magnetic fields in hot stars -- The structure of Ap star magnetic fields -- Diffusion, mass loss and accretion in stars -- Photospheric abundances in late-A and Am-Fm stars -- Effective temperature and models for early a stars: Application to 78Vir (A2P) -- Silicon abundances in normal and mercury-manganese type late-B stars -- Radiative accelerations on Ga and Al ions in stable atmospheres of CP stars -- Si II autoionization lines in stratified atmosphere of Bp star -- He - variables -- Variable H? emission in the helium-strong star ? orionis C -- Lambda Bootis stars -- A spectroscopic abundance analysis of Lambda Bootis stars first results in LTE -- Hot subluminous stars -- The spectra of blue horizontal branch stars -- Weight watching in M 15 -- Looking for gaps -- More on the progenitors of white dwarfs -- Non-LTE analysis of the Palomar Green subdwarf O stars -- A statistical complete sample of hot subdwarfs -- NLTE analysis of a SDO binary: HD128220 -- NLTE analysis of helium rich subdwarf O stars -- Analysis of PG 1159 stars -- NLTE analysis of the hydrogen-deficient central star of the planetary nebula Abell 78 -- Optical observations of the ultrahigh-excitation pre-white dwarf KPD 0005+5106 -- The atmospheres of extreme helium stars -- Mass loss from ? Sgr and other helium stars -- Blue post-asymptotic giant branch stars at high galactic latitude -- Old planetary nuclei and their evolutionary connections -- Analysis of central stars of old planetary nebulae: Problems with the Balmer lines -- Hot white dwarfs -- ROSAT observations of white dwarfs -- Carbon enrichment in the outer layers of hot helium-rich high gravity stars -- Prospective EUVE observations of hot white dwarfs -- Spectra of interacting binary white dwarf stars -- The opacity project — A review -- The Lyman ? line wing and application for synthetic spectra of DA white dwarfs -- Ion-atom complexes and the absorption of radiation in stellar plasma -- Ion-atom complexes and the recombination in stellar plasma -- Stark broadening parameters for spectral lines of multicharged ions in stellar atmospheres: C IV, N V, O VI lines and regularities within an isoelectronic sequence -- On Stark line shifts in spectra of very hot stars -- Accelerated Lambda Iteration -- Instabilities in hot-star winds: Basic physics and recent developments -- Radiation-driven wind theory: Not (yet?) working -- Radiation-driven wind theory: The influence of turbulence -- Application of the etla approach in the comoving frame to the study of winds in hot stars -- Interactive LTE spectrum synthesis -- Calculations of line positions in the presence of magnetic and electric fields in white dwarf spectra -- Treatment Of strong magnetic fields in very hot stellar atmospheres -- Blends, frequency grids and the Scharmer scheme -- Multilevel non-LTE radiative transfer using exact complete and diagonal operators -- Iron line blanketing in NLTE model atmospheres for O stars: First results -- Calculations of non-LTE radiative transfer in extended outflowing atmospheres using the Sobolev approximation for line transfer -- 3d radiative line-transfer for disk-shaped be star envelopes. |
| Record Nr. | UNINA-9910257428003321 |
| Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1992 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
The Atmospheres of Early-Type Stars [[electronic resource] ] : Proceedings of a Workshop Organized Jointly by the UK SERC’s Collaborative Computational Project No. 7 and the Institut für Theoretische Physik und Sternwarte, University of Kiel Held at the University of Kiel, Germany, 18–20 September 1991 / / edited by Ulrich Heber, C. Simon Jeffery
| The Atmospheres of Early-Type Stars [[electronic resource] ] : Proceedings of a Workshop Organized Jointly by the UK SERC’s Collaborative Computational Project No. 7 and the Institut für Theoretische Physik und Sternwarte, University of Kiel Held at the University of Kiel, Germany, 18–20 September 1991 / / edited by Ulrich Heber, C. Simon Jeffery |
| Edizione | [1st ed. 1992.] |
| Pubbl/distr/stampa | Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1992 |
| Descrizione fisica | 1 online resource (XIX, 452 p. 36 illus., 2 illus. in color.) |
| Disciplina | 523.8 |
| Collana | Lecture Notes in Physics |
| Soggetto topico |
Observations, Astronomical
Astronomy—Observations Astrophysics Geophysics Astronomy, Observations and Techniques Astrophysics and Astroparticles Geophysics/Geodesy |
| ISBN | 3-540-46997-4 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | Galactic B-type Stars -- Non-LTE analyses of B stars -- Galactic B-type supergiants -- On the determination of effective temperature and surface gravity using Strömgren uvbyß photometry -- The mass and helium discrepancy in massive young stars -- A comparison between the orbital masses of early type binary components and masses predicted by stellar evolution -- B-type stars in young clusters -- Chemical abundances in early B-type stars -- The determination of accurate cosmic abundances from B-type stellar spectra -- The origin of distant B-type stars in the galactic halo -- Galactic abundance gradients from ob-type stars in young clusters and associations -- Ionizing radiation from early-type stars -- Abundance patterns in a stars: Carbon and silicon -- Quantitative analysis of A-type supergiants -- Abundances in rapidly rotating a stars -- Statistical equilibrium of Al I/II in a stars and the abundance of aluminium in Vega -- Analyses of B-type stars in the Magellanic Clouds -- The chemical composition of main sequence stars in the Magellanic Clouds -- GHRS observations of O Stars in other galaxies -- The winds of hot stars in M31 and M33 -- Wolf-Rayet stars -- Spectrophotometry of Wolf-Rayet stars -- Near-Infrared Spectroscopy of Galactic Wolf-Rayet Stars -- Luminous Blue Variables -- Observed evolutionary changes in the visual magnitude of the luminous blue variable P Cygni -- Forbidden lines of [Fe II] and [N II] in P Cygni's envelope -- Spectroscopic observational data on P Cygni and comparison with the model of the bistable wind -- The spectroscopy of unusual high luminosity stars: HD 168607 and 6 Cas -- Discrete absorption components in O-type stars -- Analysis of circumstellar spectra of s dor -- Comoving frame calculations for ?-cephei -- Nonradial pulsations of O- and B-stars -- Analysis of line profile variations in pulsating B stars -- Mode identification of pulsating stars from line profile variations with the moment method -- Mode identification in beta Cephei stars from UV observations -- Magnetic fields in hot stars -- The structure of Ap star magnetic fields -- Diffusion, mass loss and accretion in stars -- Photospheric abundances in late-A and Am-Fm stars -- Effective temperature and models for early a stars: Application to 78Vir (A2P) -- Silicon abundances in normal and mercury-manganese type late-B stars -- Radiative accelerations on Ga and Al ions in stable atmospheres of CP stars -- Si II autoionization lines in stratified atmosphere of Bp star -- He - variables -- Variable H? emission in the helium-strong star ? orionis C -- Lambda Bootis stars -- A spectroscopic abundance analysis of Lambda Bootis stars first results in LTE -- Hot subluminous stars -- The spectra of blue horizontal branch stars -- Weight watching in M 15 -- Looking for gaps -- More on the progenitors of white dwarfs -- Non-LTE analysis of the Palomar Green subdwarf O stars -- A statistical complete sample of hot subdwarfs -- NLTE analysis of a SDO binary: HD128220 -- NLTE analysis of helium rich subdwarf O stars -- Analysis of PG 1159 stars -- NLTE analysis of the hydrogen-deficient central star of the planetary nebula Abell 78 -- Optical observations of the ultrahigh-excitation pre-white dwarf KPD 0005+5106 -- The atmospheres of extreme helium stars -- Mass loss from ? Sgr and other helium stars -- Blue post-asymptotic giant branch stars at high galactic latitude -- Old planetary nuclei and their evolutionary connections -- Analysis of central stars of old planetary nebulae: Problems with the Balmer lines -- Hot white dwarfs -- ROSAT observations of white dwarfs -- Carbon enrichment in the outer layers of hot helium-rich high gravity stars -- Prospective EUVE observations of hot white dwarfs -- Spectra of interacting binary white dwarf stars -- The opacity project — A review -- The Lyman ? line wing and application for synthetic spectra of DA white dwarfs -- Ion-atom complexes and the absorption of radiation in stellar plasma -- Ion-atom complexes and the recombination in stellar plasma -- Stark broadening parameters for spectral lines of multicharged ions in stellar atmospheres: C IV, N V, O VI lines and regularities within an isoelectronic sequence -- On Stark line shifts in spectra of very hot stars -- Accelerated Lambda Iteration -- Instabilities in hot-star winds: Basic physics and recent developments -- Radiation-driven wind theory: Not (yet?) working -- Radiation-driven wind theory: The influence of turbulence -- Application of the etla approach in the comoving frame to the study of winds in hot stars -- Interactive LTE spectrum synthesis -- Calculations of line positions in the presence of magnetic and electric fields in white dwarf spectra -- Treatment Of strong magnetic fields in very hot stellar atmospheres -- Blends, frequency grids and the Scharmer scheme -- Multilevel non-LTE radiative transfer using exact complete and diagonal operators -- Iron line blanketing in NLTE model atmospheres for O stars: First results -- Calculations of non-LTE radiative transfer in extended outflowing atmospheres using the Sobolev approximation for line transfer -- 3d radiative line-transfer for disk-shaped be star envelopes. |
| Record Nr. | UNISA-996466682503316 |
| Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1992 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. di Salerno | ||
| ||
Atomic and Molecular Data for Space Astronomy [[electronic resource] ] : Needs, Analysis, and Availabilty / / edited by Peter L. Smith, Wolfgang L. Wiese
| Atomic and Molecular Data for Space Astronomy [[electronic resource] ] : Needs, Analysis, and Availabilty / / edited by Peter L. Smith, Wolfgang L. Wiese |
| Edizione | [1st ed. 1992.] |
| Pubbl/distr/stampa | New York, NY : , : Springer New York : , : Imprint : Springer, , 1992 |
| Descrizione fisica | 1 online resource (VII, 160 p.) |
| Disciplina | 520 |
| Collana | Lecture Notes in Physics |
| Soggetto topico |
Observations, Astronomical
Astronomy—Observations Astrophysics Atoms Physics Geophysics Astronomy, Observations and Techniques Astrophysics and Astroparticles Atomic, Molecular, Optical and Plasma Physics Geophysics/Geodesy |
| ISBN | 0-387-34830-1 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | Atomic and molecular data for space astronomy: Needs and availability -- The hubble space telescope — Scientific problems and laboratory data needs -- Atomic data needed for far ultraviolet astronomy with HUT and FUSE -- Atomic data needed for analysis of EUV and X-Ray spectra -- Atomic and molecular data for observations of the interstellar medium with the hubble space telescope -- Atomic and molecular data needed for analysis of infrared spectra from ISO and SIRTF -- Atomic data from the opacity project -- Sources of atomic spectroscopic data for astrophysics -- Summary of current molecular databases. |
| Record Nr. | UNINA-9910257458703321 |
| New York, NY : , : Springer New York : , : Imprint : Springer, , 1992 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Atomic and Molecular Data for Space Astronomy [[electronic resource] ] : Needs, Analysis, and Availabilty / / edited by Peter L. Smith, Wolfgang L. Wiese
| Atomic and Molecular Data for Space Astronomy [[electronic resource] ] : Needs, Analysis, and Availabilty / / edited by Peter L. Smith, Wolfgang L. Wiese |
| Edizione | [1st ed. 1992.] |
| Pubbl/distr/stampa | New York, NY : , : Springer New York : , : Imprint : Springer, , 1992 |
| Descrizione fisica | 1 online resource (VII, 160 p.) |
| Disciplina | 520 |
| Collana | Lecture Notes in Physics |
| Soggetto topico |
Observations, Astronomical
Astronomy—Observations Astrophysics Atoms Physics Geophysics Astronomy, Observations and Techniques Astrophysics and Astroparticles Atomic, Molecular, Optical and Plasma Physics Geophysics/Geodesy |
| ISBN | 0-387-34830-1 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | Atomic and molecular data for space astronomy: Needs and availability -- The hubble space telescope — Scientific problems and laboratory data needs -- Atomic data needed for far ultraviolet astronomy with HUT and FUSE -- Atomic data needed for analysis of EUV and X-Ray spectra -- Atomic and molecular data for observations of the interstellar medium with the hubble space telescope -- Atomic and molecular data needed for analysis of infrared spectra from ISO and SIRTF -- Atomic data from the opacity project -- Sources of atomic spectroscopic data for astrophysics -- Summary of current molecular databases. |
| Record Nr. | UNISA-996466793803316 |
| New York, NY : , : Springer New York : , : Imprint : Springer, , 1992 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. di Salerno | ||
| ||
Eruptive Solar Flares [[electronic resource] ] : Proceedings of Colloquium No. 133 of the International Astronomical Union Held at Iguazú, Argentina, 2–6 August 1991 / / edited by Zdenek Svestka, Bernard V. Jackson, Marcos E. Machado
| Eruptive Solar Flares [[electronic resource] ] : Proceedings of Colloquium No. 133 of the International Astronomical Union Held at Iguazú, Argentina, 2–6 August 1991 / / edited by Zdenek Svestka, Bernard V. Jackson, Marcos E. Machado |
| Edizione | [1st ed. 1992.] |
| Pubbl/distr/stampa | Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1992 |
| Descrizione fisica | 1 online resource (XIV, 409 p. 94 illus.) |
| Disciplina | 520 |
| Collana | Lecture Notes in Physics |
| Soggetto topico |
Observations, Astronomical
Astronomy—Observations Astrophysics Geophysics Astronomy, Observations and Techniques Astrophysics and Astroparticles Geophysics/Geodesy |
| ISBN | 3-540-46794-7 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | History and basic characteristics of eruptive flares -- Basic magnetic configuration and energy supply processes for an interacting flux model of eruptive solar flares -- The role of cancelling magnetic fields in the buildup to erupting filaments and flares -- Variation of the vector magnetic field in an eruptive flare -- Intrinsically hot flares and a possible connection to deep convective magnetic fields -- Interaction of large-scale magnetic structures in solar flares -- The intrinsic relationship between flares and eruption of filament currents -- Filament eruptions, flaring arches and eruptive flares -- MHD non-equilibrium: A numerical experiment -- Triggering of eruptive flares: Destabilization of the preflare magnetic field configuration -- Field opening and reconnection -- Energy release at Alfvénic fronts in a force-free magnetic flux tube -- Energy transport in solar flares: Implications for Ca XIX emission -- Fluid flow in a jet and the CA XIX line profiles observed during solar flares -- Characteristics of the impulsive phase of flares -- Comparison of UV and X-ray solar flare observations and theoretical models -- White-light flares -- “Post” flare loops -- Plasma parameters derived from MSDP observations of cool flare loops -- Flare evolution in the density temperature diagram -- The Neupert Effect: What can i tell us about the impulsive and gradual phases of eruptive flares? -- Particle acceleration in the impulsive phase of solar flares -- Kinetic description of electron beams in the chromosphere -- Nuclear reactions in flares -- Radio emission of eruptive flares -- Arcsecond determination of solar burst centers of emission simultaneous to high time resolution and high sensitivity at 48 GHz -- Trapping and escape of the high energy particles responsible for major proton events -- Coronal and interplanetary transport of solar flare protons from the ground level event of 29 september 1989 -- High energetic solar proton flares of 19 to 29 October 1989 -- Large-scale quasi-stationary X-ray coronal structures associated with eruptive solar flares -- Large scale structures associated with eruptive flares and radio waves -- Coronal millimeter sources associated with eruptive flares -- On the association between large scale X-ray brightenings and solar flares -- A giant post-flare coronal arch observed by Skylab -- Characteristics of coronal mass ejections -- The solar sources of coronal mass ejections -- Remote sensing observations of mass ejections and shocks in interplanetary space -- In situ observations of coronal mass ejections in interplanetary space -- Meter-decameter radio emission associated with a coronal mass ejection -- Models of normal and inverse polarity filament eruptions and coronal mass ejections -- MHD shocks and simple waves in CMES -- Terrestrial response to eruptive solar flares: Geomagnetic storms -- Stellar flares: Confined or eruptive events? -- Radio flare emission from late-type stars -- The Solar-A mission experiments and the targets -- Nobeyama radioheliograph -- Decimeter high resolution solar radio spectroscope -- Considerations of a Solar Mass Ejection Imager in a low-earth orbit -- An Observational-conceptual model of the formation of filaments -- Dynamics in the prominence-corona transition region from HRTS spectra -- Active region classifications, complexity, and flare rates -- Compact sources of suprathermal microwave emission detected in quiescent active regions during lunar occulatations -- Velocity field in the 13 June 1980 flare area -- Deformation of magnetic null points -- The X12 limb flare and spray of 01 June 1991 -- Analysis of X-ray flares observed by the SMM spacecraft -- Distribution function for electron beams in the chromosphere -- Sub-second variations of HXR and H-alpha flare emission -- The role of protons in solar flares -- High spectral resolution of MM-wavelength (23 – 18 GHz) solar bursts -- Microwave flare characteristics in 8 and 3 mm Metsähovi measurements compared with optical and H-alpha data -- Simultaneous H? and microwave observations of a limb flare on June 20, 1989 -- Nonresonant ion-beam turbulence in solar flares -- Nonlinear emission mechanism of type III solar radio bursts -- A numerical simulation of magnetically driven coronal mass ejections -- Coronal mass ejections: The link between solar and geomagnetic activity -- A study of geomagnetic variations with periods of four years, six months and 27 days -- Atmospheric models of flare stars -- The emerging picture of eruptive solar flares. |
| Record Nr. | UNINA-9910257428203321 |
| Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1992 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Eruptive Solar Flares [[electronic resource] ] : Proceedings of Colloquium No. 133 of the International Astronomical Union Held at Iguazú, Argentina, 2–6 August 1991 / / edited by Zdenek Svestka, Bernard V. Jackson, Marcos E. Machado
| Eruptive Solar Flares [[electronic resource] ] : Proceedings of Colloquium No. 133 of the International Astronomical Union Held at Iguazú, Argentina, 2–6 August 1991 / / edited by Zdenek Svestka, Bernard V. Jackson, Marcos E. Machado |
| Edizione | [1st ed. 1992.] |
| Pubbl/distr/stampa | Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1992 |
| Descrizione fisica | 1 online resource (XIV, 409 p. 94 illus.) |
| Disciplina | 520 |
| Collana | Lecture Notes in Physics |
| Soggetto topico |
Observations, Astronomical
Astronomy—Observations Astrophysics Geophysics Astronomy, Observations and Techniques Astrophysics and Astroparticles Geophysics/Geodesy |
| ISBN | 3-540-46794-7 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | History and basic characteristics of eruptive flares -- Basic magnetic configuration and energy supply processes for an interacting flux model of eruptive solar flares -- The role of cancelling magnetic fields in the buildup to erupting filaments and flares -- Variation of the vector magnetic field in an eruptive flare -- Intrinsically hot flares and a possible connection to deep convective magnetic fields -- Interaction of large-scale magnetic structures in solar flares -- The intrinsic relationship between flares and eruption of filament currents -- Filament eruptions, flaring arches and eruptive flares -- MHD non-equilibrium: A numerical experiment -- Triggering of eruptive flares: Destabilization of the preflare magnetic field configuration -- Field opening and reconnection -- Energy release at Alfvénic fronts in a force-free magnetic flux tube -- Energy transport in solar flares: Implications for Ca XIX emission -- Fluid flow in a jet and the CA XIX line profiles observed during solar flares -- Characteristics of the impulsive phase of flares -- Comparison of UV and X-ray solar flare observations and theoretical models -- White-light flares -- “Post” flare loops -- Plasma parameters derived from MSDP observations of cool flare loops -- Flare evolution in the density temperature diagram -- The Neupert Effect: What can i tell us about the impulsive and gradual phases of eruptive flares? -- Particle acceleration in the impulsive phase of solar flares -- Kinetic description of electron beams in the chromosphere -- Nuclear reactions in flares -- Radio emission of eruptive flares -- Arcsecond determination of solar burst centers of emission simultaneous to high time resolution and high sensitivity at 48 GHz -- Trapping and escape of the high energy particles responsible for major proton events -- Coronal and interplanetary transport of solar flare protons from the ground level event of 29 september 1989 -- High energetic solar proton flares of 19 to 29 October 1989 -- Large-scale quasi-stationary X-ray coronal structures associated with eruptive solar flares -- Large scale structures associated with eruptive flares and radio waves -- Coronal millimeter sources associated with eruptive flares -- On the association between large scale X-ray brightenings and solar flares -- A giant post-flare coronal arch observed by Skylab -- Characteristics of coronal mass ejections -- The solar sources of coronal mass ejections -- Remote sensing observations of mass ejections and shocks in interplanetary space -- In situ observations of coronal mass ejections in interplanetary space -- Meter-decameter radio emission associated with a coronal mass ejection -- Models of normal and inverse polarity filament eruptions and coronal mass ejections -- MHD shocks and simple waves in CMES -- Terrestrial response to eruptive solar flares: Geomagnetic storms -- Stellar flares: Confined or eruptive events? -- Radio flare emission from late-type stars -- The Solar-A mission experiments and the targets -- Nobeyama radioheliograph -- Decimeter high resolution solar radio spectroscope -- Considerations of a Solar Mass Ejection Imager in a low-earth orbit -- An Observational-conceptual model of the formation of filaments -- Dynamics in the prominence-corona transition region from HRTS spectra -- Active region classifications, complexity, and flare rates -- Compact sources of suprathermal microwave emission detected in quiescent active regions during lunar occulatations -- Velocity field in the 13 June 1980 flare area -- Deformation of magnetic null points -- The X12 limb flare and spray of 01 June 1991 -- Analysis of X-ray flares observed by the SMM spacecraft -- Distribution function for electron beams in the chromosphere -- Sub-second variations of HXR and H-alpha flare emission -- The role of protons in solar flares -- High spectral resolution of MM-wavelength (23 – 18 GHz) solar bursts -- Microwave flare characteristics in 8 and 3 mm Metsähovi measurements compared with optical and H-alpha data -- Simultaneous H? and microwave observations of a limb flare on June 20, 1989 -- Nonresonant ion-beam turbulence in solar flares -- Nonlinear emission mechanism of type III solar radio bursts -- A numerical simulation of magnetically driven coronal mass ejections -- Coronal mass ejections: The link between solar and geomagnetic activity -- A study of geomagnetic variations with periods of four years, six months and 27 days -- Atmospheric models of flare stars -- The emerging picture of eruptive solar flares. |
| Record Nr. | UNISA-996466684003316 |
| Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1992 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. di Salerno | ||
| ||
Gravitational Lenses [[electronic resource] /] / by Peter Schneider, Jürgen Ehlers, Emilio E. Falco
| Gravitational Lenses [[electronic resource] /] / by Peter Schneider, Jürgen Ehlers, Emilio E. Falco |
| Autore | Schneider Peter |
| Edizione | [1st ed. 1992.] |
| Pubbl/distr/stampa | New York, NY : , : Springer New York : , : Imprint : Springer, , 1992 |
| Descrizione fisica | 1 online resource (XIV, 560 p.) |
| Disciplina | 530.1 |
| Collana | Astronomy and Astrophysics Library |
| Soggetto topico |
Gravitation
Observations, Astronomical Astronomy—Observations Astrophysics Physics Geophysics Classical and Quantum Gravitation, Relativity Theory Astronomy, Observations and Techniques Astrophysics and Astroparticles Mathematical Methods in Physics Numerical and Computational Physics, Simulation Geophysics/Geodesy |
| ISBN | 1-4612-2756-9 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | 1. Introduction -- 1.1 Historical remarks -- 1.2 Outline of the book -- 1.3 Remarks about notation -- 2. Basic facts and the observational situation -- 2.1 The Schwarzschild lens -- 2.2 The general lens -- 2.3 The magnification factor -- 2.4 Observing gravitational lens systems -- 2.5 Known gravitational lens systems -- 3. Optics in curved spacetime -- 3.1 The vacuum Maxwell equations -- 3.2 Locally approximately plane waves -- 3.3 Fermat’s principle -- 3.4 Geometry of ray bundles -- 3.5 Distances based on light rays. Caustics -- 3.6 Luminosity, flux and intensity -- 4. Derivation of the lens equation -- 4.1 Einstein’s gravitational field equation -- 4.2 Approximate metrics of isolated, slowly moving, non-compact matter distributions -- 4.3 Light deflection by quasistationary, isolated mass distributions -- 4.4 Summary of Friedmann-Lemaître cosmological models -- 4.5 Light propagation and redshift-distance relations in homogeneous and inhomogeneous model universes -- 4.6 The lens mapping in cosmology -- 4.7 Wave optics in lens theory -- 5. Properties of the lens mapping -- 5.1 Basic equations of the lens theory -- 5.2 Magnification and critical curves -- 5.3 Time delay and Fermat’s principle -- 5.4 Two general theorems about gravitational lensing -- 5.5 The topography of time delay (Fermat) surfaces -- 6. Lensing near critical points -- 6.1 The lens mapping near ordinary images -- 6.2 Stable singularities of lens mappings -- 6.3 Stable singularities of one-parameter families of lens mappings; metamorphoses -- 6.4 Magnification of extended sources near folds -- 7. Wave optics in gravitational lensing -- 7.1 Preliminaries; magnification of ordinary images -- 7.2 Magnification near isolated caustic points -- 7.3 Magnification near fold catastrophes -- 8. Simple lens models -- 8.1 Axially symmetric lenses -- 8.2 Lenses with perturbed symmetry (Quadrupole lenses) -- 8.3 The two point-mass lens -- 8.4 Lenses with elliptical symmetry -- 8.5 Marginal lenses -- 8.6 Generic properties of “elliptical lenses” -- 9. Multiple light deflection -- 9.1 The multiple lens-plane theory -- 9.2 Time delay and Fermat’s principle -- 9.3 The generalized quadrupole lens -- 10. Numerical methods -- 10.1 Roots of one-dimensional equations -- 10.2 Images of extended sources -- 10.3 Interactive methods for model fitting -- 10.4 Grid search methods -- 10.5 Transport of images -- 10.6 Ray shooting -- 10.7 Constructing lens and source models from resolved images -- 11. Statistical gravitational lensing: General considerations -- 11.1 Cross-sections -- 11.2 The random star field -- 11.3 Probabilities in a clumpy universe -- 11.4 Light propagation in inhomogeneous universes -- 11.5 Maximum probabilities -- 12. Statistical gravitational lensing: Applications -- 12.1 Amplification bias and the luminosity function of QSOs -- 12.2 Statistics of multiply imaged sources -- 12.3 QSO-galaxy associations -- 12.4 Microlensing: Astrophysical discussion -- 12.5 The amplification bias: Detailed discussion -- 12.6 Distortion of images -- 12.7 Lensing of supernovae -- 12.8 Further applications of statistical lensing -- 13. Gravitational lenses as astrophysical tools -- 13.1 Estimation of model parameters -- 13.2 Arcs in clusters of galaxies -- 13.3 Additional applications -- 13.4 Miscellaneous topics -- References -- Index of Individual Objects. |
| Record Nr. | UNINA-9910480296203321 |
Schneider Peter
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| New York, NY : , : Springer New York : , : Imprint : Springer, , 1992 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Gravitational Lenses [[electronic resource] /] / by Peter Schneider, Jürgen Ehlers, Emilio E. Falco
| Gravitational Lenses [[electronic resource] /] / by Peter Schneider, Jürgen Ehlers, Emilio E. Falco |
| Autore | Schneider Peter |
| Edizione | [1st ed. 1992.] |
| Pubbl/distr/stampa | New York, NY : , : Springer New York : , : Imprint : Springer, , 1992 |
| Descrizione fisica | 1 online resource (XIV, 560 p.) |
| Disciplina | 530.1 |
| Collana | Astronomy and Astrophysics Library |
| Soggetto topico |
Gravitation
Observations, Astronomical Astronomy—Observations Astrophysics Physics Geophysics Classical and Quantum Gravitation, Relativity Theory Astronomy, Observations and Techniques Astrophysics and Astroparticles Mathematical Methods in Physics Numerical and Computational Physics, Simulation Geophysics/Geodesy |
| ISBN | 1-4612-2756-9 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | 1. Introduction -- 1.1 Historical remarks -- 1.2 Outline of the book -- 1.3 Remarks about notation -- 2. Basic facts and the observational situation -- 2.1 The Schwarzschild lens -- 2.2 The general lens -- 2.3 The magnification factor -- 2.4 Observing gravitational lens systems -- 2.5 Known gravitational lens systems -- 3. Optics in curved spacetime -- 3.1 The vacuum Maxwell equations -- 3.2 Locally approximately plane waves -- 3.3 Fermat’s principle -- 3.4 Geometry of ray bundles -- 3.5 Distances based on light rays. Caustics -- 3.6 Luminosity, flux and intensity -- 4. Derivation of the lens equation -- 4.1 Einstein’s gravitational field equation -- 4.2 Approximate metrics of isolated, slowly moving, non-compact matter distributions -- 4.3 Light deflection by quasistationary, isolated mass distributions -- 4.4 Summary of Friedmann-Lemaître cosmological models -- 4.5 Light propagation and redshift-distance relations in homogeneous and inhomogeneous model universes -- 4.6 The lens mapping in cosmology -- 4.7 Wave optics in lens theory -- 5. Properties of the lens mapping -- 5.1 Basic equations of the lens theory -- 5.2 Magnification and critical curves -- 5.3 Time delay and Fermat’s principle -- 5.4 Two general theorems about gravitational lensing -- 5.5 The topography of time delay (Fermat) surfaces -- 6. Lensing near critical points -- 6.1 The lens mapping near ordinary images -- 6.2 Stable singularities of lens mappings -- 6.3 Stable singularities of one-parameter families of lens mappings; metamorphoses -- 6.4 Magnification of extended sources near folds -- 7. Wave optics in gravitational lensing -- 7.1 Preliminaries; magnification of ordinary images -- 7.2 Magnification near isolated caustic points -- 7.3 Magnification near fold catastrophes -- 8. Simple lens models -- 8.1 Axially symmetric lenses -- 8.2 Lenses with perturbed symmetry (Quadrupole lenses) -- 8.3 The two point-mass lens -- 8.4 Lenses with elliptical symmetry -- 8.5 Marginal lenses -- 8.6 Generic properties of “elliptical lenses” -- 9. Multiple light deflection -- 9.1 The multiple lens-plane theory -- 9.2 Time delay and Fermat’s principle -- 9.3 The generalized quadrupole lens -- 10. Numerical methods -- 10.1 Roots of one-dimensional equations -- 10.2 Images of extended sources -- 10.3 Interactive methods for model fitting -- 10.4 Grid search methods -- 10.5 Transport of images -- 10.6 Ray shooting -- 10.7 Constructing lens and source models from resolved images -- 11. Statistical gravitational lensing: General considerations -- 11.1 Cross-sections -- 11.2 The random star field -- 11.3 Probabilities in a clumpy universe -- 11.4 Light propagation in inhomogeneous universes -- 11.5 Maximum probabilities -- 12. Statistical gravitational lensing: Applications -- 12.1 Amplification bias and the luminosity function of QSOs -- 12.2 Statistics of multiply imaged sources -- 12.3 QSO-galaxy associations -- 12.4 Microlensing: Astrophysical discussion -- 12.5 The amplification bias: Detailed discussion -- 12.6 Distortion of images -- 12.7 Lensing of supernovae -- 12.8 Further applications of statistical lensing -- 13. Gravitational lenses as astrophysical tools -- 13.1 Estimation of model parameters -- 13.2 Arcs in clusters of galaxies -- 13.3 Additional applications -- 13.4 Miscellaneous topics -- References -- Index of Individual Objects. |
| Record Nr. | UNINA-9910789219703321 |
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Schneider Peter
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| New York, NY : , : Springer New York : , : Imprint : Springer, , 1992 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Gravitational Lenses [[electronic resource] /] / by Peter Schneider, Jürgen Ehlers, Emilio E. Falco
| Gravitational Lenses [[electronic resource] /] / by Peter Schneider, Jürgen Ehlers, Emilio E. Falco |
| Autore | Schneider Peter |
| Edizione | [1st ed. 1992.] |
| Pubbl/distr/stampa | New York, NY : , : Springer New York : , : Imprint : Springer, , 1992 |
| Descrizione fisica | 1 online resource (XIV, 560 p.) |
| Disciplina | 530.1 |
| Collana | Astronomy and Astrophysics Library |
| Soggetto topico |
Gravitation
Observations, Astronomical Astronomy—Observations Astrophysics Physics Geophysics Classical and Quantum Gravitation, Relativity Theory Astronomy, Observations and Techniques Astrophysics and Astroparticles Mathematical Methods in Physics Numerical and Computational Physics, Simulation Geophysics/Geodesy |
| ISBN | 1-4612-2756-9 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | 1. Introduction -- 1.1 Historical remarks -- 1.2 Outline of the book -- 1.3 Remarks about notation -- 2. Basic facts and the observational situation -- 2.1 The Schwarzschild lens -- 2.2 The general lens -- 2.3 The magnification factor -- 2.4 Observing gravitational lens systems -- 2.5 Known gravitational lens systems -- 3. Optics in curved spacetime -- 3.1 The vacuum Maxwell equations -- 3.2 Locally approximately plane waves -- 3.3 Fermat’s principle -- 3.4 Geometry of ray bundles -- 3.5 Distances based on light rays. Caustics -- 3.6 Luminosity, flux and intensity -- 4. Derivation of the lens equation -- 4.1 Einstein’s gravitational field equation -- 4.2 Approximate metrics of isolated, slowly moving, non-compact matter distributions -- 4.3 Light deflection by quasistationary, isolated mass distributions -- 4.4 Summary of Friedmann-Lemaître cosmological models -- 4.5 Light propagation and redshift-distance relations in homogeneous and inhomogeneous model universes -- 4.6 The lens mapping in cosmology -- 4.7 Wave optics in lens theory -- 5. Properties of the lens mapping -- 5.1 Basic equations of the lens theory -- 5.2 Magnification and critical curves -- 5.3 Time delay and Fermat’s principle -- 5.4 Two general theorems about gravitational lensing -- 5.5 The topography of time delay (Fermat) surfaces -- 6. Lensing near critical points -- 6.1 The lens mapping near ordinary images -- 6.2 Stable singularities of lens mappings -- 6.3 Stable singularities of one-parameter families of lens mappings; metamorphoses -- 6.4 Magnification of extended sources near folds -- 7. Wave optics in gravitational lensing -- 7.1 Preliminaries; magnification of ordinary images -- 7.2 Magnification near isolated caustic points -- 7.3 Magnification near fold catastrophes -- 8. Simple lens models -- 8.1 Axially symmetric lenses -- 8.2 Lenses with perturbed symmetry (Quadrupole lenses) -- 8.3 The two point-mass lens -- 8.4 Lenses with elliptical symmetry -- 8.5 Marginal lenses -- 8.6 Generic properties of “elliptical lenses” -- 9. Multiple light deflection -- 9.1 The multiple lens-plane theory -- 9.2 Time delay and Fermat’s principle -- 9.3 The generalized quadrupole lens -- 10. Numerical methods -- 10.1 Roots of one-dimensional equations -- 10.2 Images of extended sources -- 10.3 Interactive methods for model fitting -- 10.4 Grid search methods -- 10.5 Transport of images -- 10.6 Ray shooting -- 10.7 Constructing lens and source models from resolved images -- 11. Statistical gravitational lensing: General considerations -- 11.1 Cross-sections -- 11.2 The random star field -- 11.3 Probabilities in a clumpy universe -- 11.4 Light propagation in inhomogeneous universes -- 11.5 Maximum probabilities -- 12. Statistical gravitational lensing: Applications -- 12.1 Amplification bias and the luminosity function of QSOs -- 12.2 Statistics of multiply imaged sources -- 12.3 QSO-galaxy associations -- 12.4 Microlensing: Astrophysical discussion -- 12.5 The amplification bias: Detailed discussion -- 12.6 Distortion of images -- 12.7 Lensing of supernovae -- 12.8 Further applications of statistical lensing -- 13. Gravitational lenses as astrophysical tools -- 13.1 Estimation of model parameters -- 13.2 Arcs in clusters of galaxies -- 13.3 Additional applications -- 13.4 Miscellaneous topics -- References -- Index of Individual Objects. |
| Record Nr. | UNINA-9910817242903321 |
|
Schneider Peter
|
||
| New York, NY : , : Springer New York : , : Imprint : Springer, , 1992 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Gravitational Lenses [[electronic resource] ] : Proceedings of a Conference Held in Hamburg, Germany, 9-13 September 1991 / / edited by Rainer Kayser, Thomas Schramm, Lars Nieser
| Gravitational Lenses [[electronic resource] ] : Proceedings of a Conference Held in Hamburg, Germany, 9-13 September 1991 / / edited by Rainer Kayser, Thomas Schramm, Lars Nieser |
| Edizione | [1st ed. 1992.] |
| Pubbl/distr/stampa | Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1992 |
| Descrizione fisica | 1 online resource (XXII, 399 p.) |
| Disciplina | 523.1/12 |
| Collana | Lecture Notes in Physics |
| Soggetto topico |
Gravitation
Observations, Astronomical Astronomy—Observations Astrophysics Geophysics Differential geometry Mathematical physics Classical and Quantum Gravitation, Relativity Theory Astronomy, Observations and Techniques Astrophysics and Astroparticles Geophysics/Geodesy Differential Geometry Theoretical, Mathematical and Computational Physics |
| ISBN | 3-540-47286-X |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | The impact of gravitating lensing on astrophysics -- to basic concepts of gravitational lensing -- Optical observations of gravitational lenses -- Recent radio observations of gravitational lenses -- Old faithful: The venerable gravitational lens system 0957+561 -- Determining the Hubble parameter -- Time delay determination for the first gravitational lens Q0957+561 A,B -- Photometric monitoring of gravitational lenses with the nordic optical telescope -- A search for closely-spaced gravitational lenses -- A high-resolution imaging survey for gravitational lenses -- Search for gravitational lensing in a sample of highly luminous quasars -- Bidimensional spectrography of multiple quasars -- Sizing up the universe with an optical illusion: Comments on the measurement of ?t in Q 0957+561 -- HST observations of G2237+0305 and PG1115+080 -- A star-formation region in 2237+030 -- Redshift measurements of the brightest cluster galaxies of the gravitational lens 0957+561 -- The Triple Quasar PG1115+080 -- 1830-211 as a lens artefact -- 0218+357: The smallest separation lensed system -- Gravitational microlensing -- The search for massive compact halo objects -- Probing the galactic disk with gravitational microlensing -- Searching for microlensing in optical lightcurves of quasars -- The Hamburg quasar monitoring program at Calar Alto -- Microlensing predictions for the Einstein cross 2237+0305 -- Expected color variations of the microlensed QSO 2237+0305 -- Intrinsic variability implications for microlensing -- Gravitational lensing statistics -- Quasar-galaxy associations -- Associations between QSOs and galaxies -- Quasar-galaxy associations -- Einstein rings and related phenomena -- Observational indications for statistical lensing by clusters of galaxies -- Counts of galaxies around distant highly luminous QSOs -- A search for close separation (? 1?) quasar images -- Joint discussion on quasar-galaxy associations -- Luminous arcs: An observational update -- Cluster gravitational lenses -- Deep galaxy surveys -- Statistical lensing by clusters of galaxies and Dark Matter distribution -- Observation and analysis of Abell 2218 arcs and rings -- New results on Abell 963 and MG1131+0456 -- On the straight arc in A2390 -- A search for gravitational lenses using sky survey plate scans -- Gravitational lensing of BL Lac objects and related AGN -- Recent observations of PKS1830-211 -- Possible test for ? with gravitational lenses -- Gravitational lensing by large-scale structures -- Concluding summary -- Spectrography in the 0957+561 field -- Gravitational lensing in alternative cosmological models -- Possibilities for observing lensing effects in the gravitational field of our galaxy -- The appearance of cross-like quasar images and the estimation of GL parameters -- Gravitational lensing properties of the Reissner-Nordström type neutron star -- A search for the optical counterpart of the Einstein ring PKS 1830-211 -- Local behavior of caustics in different lens models -- Multiple imaging by gravitational waves -- Statistical lensing by extended lenses -- VLBI hybrid maps of 0957+561 A,B -- Deformation of P Cygni line profiles by gravitational microlensing effects -- Statistical lensing and the overdensity of QSO near foreground galaxies -- A moving gravitational lens in the Friedmann universe -- Strong microlensing and BL LAC objects -- Dispersive effects in the spectra of QSO pairs -- Our galactic nucleus through the lens's eye of gravity -- Unobserved lensing agents -- Discordant redshifts in compact groups of galaxies -- An analytical approach to quasar variability due to microlensing -- Morse theory and gravitational microlensing -- N-body techniques for ?-lensing -- Statistics of lensing by clusters of galaxies: Giant luminous arcs -- Spherical opaque gravitational lens models and their implication for ? 0 -- Catastrophe theory and stable images and caustics in gravitational lenses -- List of contributions not submitted for inclusion. |
| Record Nr. | UNINA-9910257435803321 |
| Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1992 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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