03321nam 22005895 450 991030042780332120200630113928.03-319-09587-010.1007/978-3-319-09587-5(CKB)3710000000228705(EBL)1968620(OCoLC)908090111(SSID)ssj0001354128(PQKBManifestationID)11732956(PQKBTitleCode)TC0001354128(PQKBWorkID)11323202(PQKB)11178997(DE-He213)978-3-319-09587-5(MiAaPQ)EBC1968620(PPN)181354527(EXLCZ)99371000000022870520140904d2015 u| 0engur|n|---|||||txtccrFast Spectral Variability in the X-ray Emission of Accreting Black Holes /by Chris Skipper1st ed. 2015.Cham :Springer International Publishing :Imprint: Springer,2015.1 online resource (176 p.)Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Includes index.3-319-09586-2 Declaration of Authorship -- Acknowledgements -- Introduction -- AGN: Absorption, spectral classification and the optical emission lines -- Very Fast X-ray Spectral Variability in Cygnus X-1 -- The m E┌ relationship in XRBs and AGN -- Conclusions -- Spectra of Compton-thick AGN -- Spectra of Compton-thin AGN -- References.This thesis brings together the various techniques of X-ray spectral analysis in order to examine the properties of black holes that vary in mass by several orders of magnitude. In all these systems it is widely accepted that the X-ray emission is produced by Compton up-scattering of lower energy seed photons in a hot corona or accretion flow, and here these processes are examined through a study of the X-ray spectral variability of each source. A new technique is introduced, in which models are fitted to over 2 million X-ray spectra on time-scales as short as 16 ms, and subsequently it is shown that the nature of the correlation between intensity and spectral index is strongly dependent upon the spectral state of the black hole. Finally, the results of an extensive survey of nearby galactic nuclei using the Chandra X-ray telescope are presented in the form of images and spectra, and these results are used along with data from the literature to search for Compton-thick nuclei.Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Observations, AstronomicalAstronomy—ObservationsAstronomy, Observations and Techniqueshttps://scigraph.springernature.com/ontologies/product-market-codes/P22014Observations, Astronomical.Astronomy—Observations.Astronomy, Observations and Techniques.522.6863Skipper Chrisauthttp://id.loc.gov/vocabulary/relators/aut792288MiAaPQMiAaPQMiAaPQBOOK9910300427803321Fast Spectral Variability in the X-ray Emission of Accreting Black Holes1771572UNINA