Thermal Non-jet Flares in Active Galactic Nuclei

Details Thermal Non-jet Flares in Active Galactic Nuclei Thermal Non-jet Flares in Active Galactic Nuclei

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..427..118t&link_type=abstract

Accretion and Ejection in AGN: a Global View. Proceedings of a conference held June 22-26, 2009 in Como, Italy. Edited by Laura

Physics

Scientific paper

We present preliminary results of an ongoing study to test the possibility of thermal flares caused by a collapsing accretion disk in quasar/microquasar objects. We use a simple toy model to estimate the observable signatures of an event where the matter originating from the disk expands rapidly and radiates mainly bremsstrahlung radiation, thus leading to a short flare visible in the optical waveband but not in radio. Together with the emergence of a new jet component afterwards, this first flare forms a double-peaked optical lightcurve with only one radio flare coinciding with the latter optical burst—as observed e.g. in BL Lac (Marscher et al. 2008). The same general picture is suspected to work for example in the microquasar Cygnus X-3 (Miller-Jones et al., in preparation) where it would lead to double radio peaks. Apart from a few quantitative tests the physical "big picture" is still mostly qualitative.

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