Journal article
Quasar variability measurements with SDSS repeated imaging and POSS data
Proceedings of the International Astronomical Union, v 2004(IAUS222), pp 525-526
Mar 2004
Abstract
We analyze the properties of quasar variability using repeated SDSS imaging data in five UV-to-far red photometric bands, accurate to 0.02 mag, for ∼13,000 spectroscopically confirmed quasars. The observed time lags span the range from 3 hours to over 3 years, and constrain the quasar variability for rest-frame time lags of up to two years, and at rest-frame wavelengths from 1000Å to 6000Å. We demonstrate that ∼66,000 SDSS measurements of magnitude differences can be described within the measurement noise by a simple function of only three free parameters. The addition of POSS data constrains the long-term behavior of quasar variability and provides evidence for a turn-over in the structure function. This turn-over indicates that the characteristic time scale for optical variability of quasars is of the order 1 year.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html
Metrics
13 Record Views
Details
- Title
- Quasar variability measurements with SDSS repeated imaging and POSS data
- Creators
- Ž Ivezić - Princeton University, Princeton, USAR. H Lupton - Princeton University, Princeton, USAM Jurić - Princeton University, Princeton, USAS Anderson - University of Washington, Seattle, USAP. B Hall - Princeton University, Princeton, USAG. T Richards - Princeton University, Princeton, USAC. M Rockosi - University of Washington, Seattle, USAD. E Vanden Berk - University of Pittsburgh, Pittsburgh, USAE. L Turner - Princeton University, Princeton, USAG. R Knapp - Princeton University, Princeton, USAJ. E Gunn - Princeton University, Princeton, USAD Schlegel - Princeton University, Princeton, USAM. A Strauss - Princeton University, Princeton, USAD. P Schneider - The Pennsylvania State University, University Park, USA
- Publication Details
- Proceedings of the International Astronomical Union, v 2004(IAUS222), pp 525-526
- Publisher
- Cambridge University Press; Cambridge, UK
- Number of pages
- 2
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000228180100176
- Other Identifier
- 991014877919504721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Astronomy & Astrophysics