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OPTICAL MICROVARIABILITY IN QUASARS: SPECTRAL VARIABILITY

Authors :
A. Ramirez
Deborah Dultzin
J. A. de Diego
Source :
The Astrophysical Journal. 714:605-617
Publication Year :
2010
Publisher :
American Astronomical Society, 2010.

Abstract

We present a method that we developed to discern where the optical microvariability (OM) in quasars originates: in the accretion disk (related to thermal processes) or in the jet (related to non-thermal processes). Analyzing nearly simultaneous observations in three different optical bands of continuum emission, we are able to determine the origin of several isolated OM events. In particular, our method indicates that from nine events reported by Ramirez et al. (2009), three of them are consistent with a thermal origin, three to non-thermal, and three cannot be discerned. The implications for the emission models of OM are briefly discussed.<br />Accepted for publication in the Astrophysical Journal

Details

ISSN :
15384357 and 0004637X
Volume :
714
Database :
OpenAIRE
Journal :
The Astrophysical Journal
Accession number :
edsair.doi.dedup.....9ed6734223a9371a13d39c840d1e4b86
Full Text :
https://doi.org/10.1088/0004-637x/714/1/605