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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 693897.0, MPI für Astronomie / Publikationen_mpia
Assessment of stochastic and deterministic models of 6304 quasar lightcurves from SDSS Stripe 82
Authors:Andrae, R.; Kim, D. -. W.; Bailer-Jones, C. A. L.
Date of Publication (YYYY-MM-DD):2013
Title of Journal:Astronomy and Astrophysics
Volume:554
Start Page:id.A137 (11 pp)
Audience:Not Specified
Abstract / Description:The optical lightcurves of many quasars show variations of tenths of a magnitude or more on timescales of months to years. This variation often cannot be described well by a simple deterministic model. We perform a Bayesian comparison of over 20 deterministic and stochastic models on 6304 quasi-steller object (QSO) lightcurves in SDSS Stripe 82. We include the damped random walk (or Ornstein-Uhlenbeck [OU] process), a particular type of stochastic model, which recent studies have focused on. Further models we consider are single and double sinusoids, multiple
Free Keywords:galaxies: active; quasars: general; methods: data analysis; methods: statistical
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6361
URL:http://cdsads.u-strasbg.fr/abs/2013A%26A...554A.13...
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