Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.221..931f&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 221, Aug. 15, 1986, p. 931-945. Research supported by t
Astronomy and Astrophysics
Astronomy
81
Compton Effect, Electron-Positron Pairs, Pair Production, Radiation Spectra, X Ray Sources, Active Galactic Nuclei, Gamma Ray Astronomy, Kinetic Equations, Light Scattering, Positrons, Relativistic Plasmas, Ultraviolet Radiation
Scientific paper
Inverse Compton scattering of ultraviolet photons by GeV electrons produces γ-rays which in turn create electron-positron pairs if the source is sufficiently compact. The pairs modify the emergent radiation spectrum through their own inverse Compton scattering and through thermal Comptonization after they have cooled to sub-relativistic temperatures. Recent calculations of spectral reprocessing under these conditions are extended to situations in which the Thomson optical depth of the pair plasma exceeds unity, and to demonstrate time-dependent behaviour explicitly. The relevance of the results to X-ray observations of active galactic nuclei, binary X-ray sources and γ-ray bursters is discussed briefly.
Blandford Roger. D.
Cuellar L.
Fabian Andrea C.
Guilbert Paul W.
Phinney Sterl E.
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