Volume 532, August 2011
|Number of page(s)||10|
|Published online||12 July 2011|
Implications of automatic photon quenching on compact gamma-ray sources
Department of PhysicsUniversity of Athens, Panepistimiopolis, 15783 Zografos, Greece
Received: 22 February 2011
Accepted: 26 April 2011
Aims. We investigate photon quenching in compact non-thermal sources. This involves photon-photon annihilation and lepton synchrotron radiation in a network that can become non-linear. As a result the γ-ray luminosity of a source cannot exceed a critical limit that depends only on the radius of the source and on the magnetic field.
Methods. We perform analytic and numerical calculations that verify previous results and extend them so that the basic properties of photon quenching are investigated.
Results. We apply the above to the 2006 TeV observations of quasar 3C 279 and obtain the parameter space of allowed values for the radius of the emitting source, its magnetic field strength and the Doppler factor of the flow. We argue that the TeV observations favour either a modest Doppler factor and a low magnetic field or a high Doppler factor and a high magnetic field.
Key words: infrared: general / acceleration of particles / radiation mechnisms: non-thermal
© ESO, 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.