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OPTICAL MICROVARIABILITY IN QUASARS: SPECTRAL VARIABILITY
- 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
- Subjects :
- Physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Continuum (measurement)
Astrophysics::High Energy Astrophysical Phenomena
FOS: Physical sciences
Astronomy and Astrophysics
Quasar
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Accretion disc
Space and Planetary Science
Physics::Space Physics
Thermal
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
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