1993/12/21 by C. D. Dermer, Charles D. Dermer, R. Schlickeiser +3 · 2 citations
Computer Science · Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Cosmic Phenomena #Computational Physics and Python Applications #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9312052
LaTeX, 15 pages, no figures, accepted for publication in ApJ Supplements (IAU Sumposium 142), NRL-CD-93-007
arxiv created 1993/12/21 · openalex publication_date 1993/12/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Compton scattering of external radiation by nonthermal particles in\noutflowing blazar jets is dominated by accretion-disk photons rather than\nscattered radiation to distances \∼ 0.01-0.1 pc from the central engine for\nstandard parameters, thus clarifying the limits of validity of the model by the\npresent authors and the model of Sikora, Begelman, & Rees. On the basis of\ncontemporaneous Ginga X-ray and EGRET gamma-ray observations, we estimate the\nradius of 3C 279's gamma-ray photosphere to be smaller than estimated by\nBlandford. There is thus no need to require that the acceleration and emission\nsites of gamma-ray blazars to be located farther than \∼ 102-3\ngravitational radii from the central engine. We argue that lineless BL Lac\nobjects, rather than quasars, are more likely to be detected in the TeV energy\nrange.\n