Gamma-Ray Production through Inverse Compton Scattering with Anisotropic Photon Field from Accretion Disk in AGNs

Details Gamma-Ray Production through Inverse Compton Scattering with Anisotropic Photon Field from Accretion Disk in AGNs Gamma-Ray Production through Inverse Compton Scattering with Anisotropic Photon Field from Accretion Disk in AGNs

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...488...94z&link_type=abstract

Astrophysical Journal v.488, p.94

Physics

8

Accretion, Accretion Disks, Black Hole Physics, Galaxies: Active, Gamma Rays: Theory

Scientific paper

We give a detailed consideration of the photon spectrum produced by inverse Compton scattering off relativistic electrons in the anisotropic soft photon field from the accretion disk in jet model, assuming that the relativistic electrons and positrons are produced by collisions of relativistic protons with the soft photon and matter field. We considered soft photons from either the standard accretion disk or from the two-temperature accretion disk, respectively, which resulted in very different minimum Lorentz factors of the relativistic electrons and different scattered photon spectra. The scattered photon spectra seen from different angles and produced in various emission regions have been calculated for the different soft photon sources concerned and compared with results of other authors. The results of our calculations indicate that the instantaneous and stationary scattered photon spectra vary with the angle of scatter, the Lorentz factor of the jet, and the emission region of the gamma -rays. Furthermore, whether X-rays and gamma -rays can be produced cospatially depends upon the production mechanisms of the relativistic electrons.

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