Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...232..882l&link_type=abstract
Astrophysical Journal, Part 1, vol. 232, Sept. 15, 1979, p. 882-890.
Astronomy and Astrophysics
Astrophysics
30
Compton Effect, Cosmic Plasma, Photons, Plasma-Particle Interactions, Thermal Plasmas, Time Dependence, X Ray Sources, Extraterrestrial Radiation, High Temperature Plasmas, Mathematical Models, Nonuniform Plasmas, Periodic Variations, Plasma Density, Radiative Transfer
Scientific paper
Consideration is given to time-dependent behavior in inverse Compton reflection in which an external flux of soft photons is incident upon a hot, thermal plasma of large scattering depth and small absorption depth. Fluctuations are assumed to arise from variability in the input of soft photons. The treatment is largely analytic. Spectral evolution during a fluctuation is calculated in detail and it is shown how such observables as the frequency-dependent rise time and the spectral hardness ratio may be used to derive the plasma parameters and soft photon frequency, or perhaps rule out an inverse Compton model altogether. Some of the results are qualitatively applicable to inverse Compton processes in general. Such considerations may be relevant to models for rapidly fluctuating X-ray sources.
Lightman Alan P.
Rybicki George B.
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