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Record Nr. |
UNINA9910250050003321 |
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Autore |
Reames Donald V |
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Titolo |
Solar Energetic Particles [[electronic resource] ] : A Modern Primer on Understanding Sources, Acceleration and Propagation / / by Donald V. Reames |
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Pubbl/distr/stampa |
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Cham : , : Springer International Publishing : , : Imprint : Springer, , 2017 |
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ISBN |
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Edizione |
[1st ed. 2017.] |
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Descrizione fisica |
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1 online resource (XVI, 127 p. 79 illus., 61 illus. in color.) |
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Collana |
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Lecture Notes in Physics, , 0075-8450 ; ; 932 |
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Disciplina |
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Soggetti |
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Space sciences |
Plasma (Ionized gases) |
Geophysics |
Observations, Astronomical |
Astronomy—Observations |
Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) |
Plasma Physics |
Geophysics/Geodesy |
Astronomy, Observations and Techniques |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Nota di contenuto |
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Introduction -- History -- Distinguishing Two Sources -- Impulsive SEP events -- Gradual SEP Events -- High Energies and Radiation Effects -- Measurements of SEPs -- Summary and Conclusions. |
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Sommario/riassunto |
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This concise primer introduces the non-specialist reader to the physics of solar energetic particles (SEP) and systematically reviews the evidence for the two main mechanisms which lead to the so-called impulsive and gradual SEP events. More specifically, the timing of the onsets, the longitude distributions, the high-energy spectral shapes, the correlations with other solar phenomena (e.g. coronal mass ejections), as well as the all-important elemental and isotopic abundances of SEPs are investigated. Impulsive SEP events are related to magnetic reconnection in solar flares and jets. The concept of shock |
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acceleration by scattering on self-amplified Alfvén waves is introduced, as is the evidence of reacceleration of impulsive-SEP material in the seed population accessed by the shocks in gradual events. The text then develops processes of transport of ions out to an observer. Finally, a new technique to determine the source plasma temperature in both impulsive and gradual events is demonstrated. Last but not least the role of SEP events as a radiation hazard in space is mentioned and a short discussion of the nature of the main particle telescope designs that have contributed to most of the SEP measurements is given. |
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