The Time Variability of SDSS Stripe 82 Quasars as a Damped Random Walk

Details The Time Variability of SDSS Stripe 82 Quasars as a Damped Random Walk The Time Variability of SDSS Stripe 82 Quasars as a Damped Random Walk

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21543326m&link_type=abstract

American Astronomical Society, AAS Meeting #215, #433.26; Bulletin of the American Astronomical Society, Vol. 42, p.374

Astronomy and Astrophysics

Astronomy

Scientific paper

We model the time variability of 9,000 spectroscopically confirmed quasars in SDSS stripe 82 as a damped random walk. We confirm the result of Kelly et al. (2009) that this model can explain quasar light curves at an impressive fidelity level (0.01-0.02 mag). This model provides a simple statistical description of a light curve using a characteristic time scale and the amplitude of long-term variations. We search for correlations of these variability parameters with various physical parameters such as luminosity, black hole mass, and rest-frame wavelength. We acknowledge support by NSF grant AST-0807500 to the University of Washington.

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