<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Dermer, C. D.</style></author><author><style face="normal" font="default" size="100%">Schlickeiser, R.</style></author><author><style face="normal" font="default" size="100%">Mastichiadis, A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">High-energy gamma radiation from extragalactic radio sources.</style></title><short-title><style face="normal" font="default" size="100%">Astronomy and Astrophysics</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Accretion Disks</style></keyword><keyword><style  face="normal" font="default" size="100%">Compton Effect</style></keyword><keyword><style  face="normal" font="default" size="100%">Computational Astrophysics</style></keyword><keyword><style  face="normal" font="default" size="100%">Distribution Functions</style></keyword><keyword><style  face="normal" font="default" size="100%">Extragalactic Radio Sources</style></keyword><keyword><style  face="normal" font="default" size="100%">Gamma Ray Astronomy</style></keyword><keyword><style  face="normal" font="default" size="100%">Gamma Ray Observatory</style></keyword><keyword><style  face="normal" font="default" size="100%">Radio Emission</style></keyword><keyword><style  face="normal" font="default" size="100%">Relativistic Electron Beams</style></keyword><keyword><style  face="normal" font="default" size="100%">Space Radiation</style></keyword><keyword><style  face="normal" font="default" size="100%">Spaceborne Astronomy</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1992</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1992/03/1</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://ui.adsabs.harvard.edu/abs/1992A&amp;A...256L..27D</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">256</style></volume><pages><style face="normal" font="default" size="100%">L27 - L30</style></pages><isbn><style face="normal" font="default" size="100%">0004-6361</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We propose that the important relationship between 3C 273 and 3C 279, the first two extragalactic sources detected at &amp;gt; 100 MeV energies, is their superluminal nature. In support of this conjecture, we propose a kinematic focusing mechanism, based on Compton scattering of accretion-disk photons by relativistic nonthermal electrons in the jet, that preferentially emits gamma rays in the superluminal direction.</style></abstract></record></records></xml>