The DOI matches its Crossref record; 23 of the 23 references it cites were found in a registry or an index.
IS QUASAR OPTICAL VARIABILITY A DAMPED RANDOM WALK?
Open accessAbstract
The damped random walk (DRW) model is increasingly used to model the variability in quasar optical light curves, but it is still uncertain whether the DRW model provides an adequate description of quasar optical variability across all timescales. Using a sample of OGLE quasar light curves, we consider four modifications to the DRW model by introducing additional parameters into the covariance function to search for deviations from the DRW model on both short and long timescales. We find good agreement with the DRW model on timescales that are well sampled by the data (from a month to a few years), possibly with some intrinsic scatter in the additional parameters, but this conclusion depends on the statistical test employed and is sensitive to whether the estimates of the photometric errors are correct to within ∼10%. On very short timescales (below a few months), we see some evidence of the existence of a cutoff below which the correlation is stronger than the DRW model, echoing the recent finding of Mushotzky et al. using quasar light curves from Kepler . On very long timescales (>a few years), the light curves do not constrain models well, but are consistent with the DRW model.
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Cites
Composite Quasar Spectra from the Sloan Digital Sky Survey
Vanden Berk, D. E., Richards, G. T., Bauer, A., Strauss, M. A., Schneider, D. P., Heckman, T. M., York, D. G., Hall, P. B., Fan, X., Knapp, G. R., et al. (2001) · The Astronomical Journal · doi:10.1086/321167 · Cited by 1,887
The Sloan Digital Sky Survey Quasar Survey: Quasar Luminosity Function from Data Release 3
Richards, G. T., Strauss, M. A., Fan, X., Hall, P. B., Jester, S., Schneider, D. P., Vanden Berk, D. E., Stoughton, C., Anderson, S. F., Brunner, R. J., et al. (2006) · The Astronomical Journal · doi:10.1086/503559 · Cited by 876
ARE THE VARIATIONS IN QUASAR OPTICAL FLUX DRIVEN BY THERMAL FLUCTUATIONS?
Kelly, B. C., Bechtold, J., & Siemiginowska, A. (2009) · The Astrophysical Journal · doi:10.1088/0004-637x/698/1/895 · Cited by 809
MODELING THE TIME VARIABILITY OF SDSS STRIPE 82 QUASARS AS A DAMPED RANDOM WALK
MacLeod, C. L., Ivezić, Ž., Kochanek, C. S., Kozłowski, S., Kelly, B., Bullock, E., Kimball, A., Sesar, B., Westman, D., Brooks, K., et al. (2010) · The Astrophysical Journal · doi:10.1088/0004-637x/721/2/1014 · Cited by 700
Self-citationPan-STARRS: A Large Synoptic Survey Telescope Array
Kaiser, N., Aussel, H., Burke, B. E., Boesgaard, H., Chambers, K., Chun, M. R., Heasley, J. N., Hodapp, K.-W., Hunt, B., Jedicke, R., et al. (2002) · SPIE Proceedings · doi:10.1117/12.457365 · Cited by 700
Measuring the broad-band power spectra of active galactic nuclei with RXTE
Uttley, P., McHardy, I. M., & Papadakis, I. E. (2002) · Monthly Notices of the Royal Astronomical Society · doi:10.1046/j.1365-8711.2002.05298.x · Cited by 456
THE QUASAR ACCRETION DISK SIZE-BLACK HOLE MASS RELATION
Morgan, C. W., Kochanek, C. S., Morgan, N. D., & Falco, E. E. (2010) · The Astrophysical Journal · doi:10.1088/0004-637x/712/2/1129 · Cited by 367
Self-citationKozłowski, S., Kochanek, C. S., Udalski, A., Wyrzykowski, Ł., Soszyński, I., Szymański, M. K., Kubiak, M., Pietrzyński, G., Szewczyk, O., Ulaczyk, K., et al. (2010) · The Astrophysical Journal · doi:10.1088/0004-637x/708/2/927 · Cited by 362
Self-citationExploring the Variable Sky with the Sloan Digital Sky Survey
Sesar, B., Ivezić, Ž., Lupton, R. H., Jurić, M., Gunn, J. E., Knapp, G. R., De Lee, N., Smith, J. A., Miknaitis, G., Lin, H., et al. (2007) · The Astronomical Journal · doi:10.1086/521819 · Cited by 360
AN ALTERNATIVE APPROACH TO MEASURING REVERBERATION LAGS IN ACTIVE GALACTIC NUCLEI
Zu, Y., Kochanek, C. S., & Peterson, B. M. (2011) · The Astrophysical Journal · doi:10.1088/0004-637x/735/2/80 · Cited by 351
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Cited by
Shappee, B. J., Prieto, J. L., Grupe, D., Kochanek, C. S., Stanek, K. Z., De Rosa, G., Mathur, S., Zu, Y., Peterson, B. M., Pogge, R. W., et al. (2014) · The Astrophysical Journal · doi:10.1088/0004-637x/788/1/48 · Cited by 1,887
Self-citationFausnaugh, M. M., Denney, K. D., Barth, A. J., Bentz, M. C., Bottorff, M. C., Carini, M. T., Croxall, K. V., Rosa, G. D., Goad, M. R., Horne, K., et al. (2016) · The Astrophysical Journal · doi:10.3847/0004-637x/821/1/56 · Cited by 311
Self-citationKelly, B. C., Becker, A. C., Sobolewska, M., Siemiginowska, A., & Uttley, P. (2014) · The Astrophysical Journal · doi:10.1088/0004-637x/788/1/33 · Cited by 270
Grier, C. J., Trump, J. R., Shen, Y., Horne, K., Kinemuchi, K., McGreer, I. D., Starkey, D. A., Brandt, W. N., Hall, P. B., Kochanek, C. S., et al. (2017) · The Astrophysical Journal · doi:10.3847/1538-4357/aa98dc · Cited by 244
Self-citationTHE SLOAN DIGITAL SKY SURVEY REVERBERATION MAPPING PROJECT: TECHNICAL OVERVIEW
Shen, Y., Brandt, W. N., Dawson, K. S., Hall, P. B., McGreer, I. D., Anderson, S. F., Chen, Y., Denney, K. D., Eftekharzadeh, S., Fan, X., et al. (2014) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/216/1/4 · Cited by 210
Self-citation
Metadata
- Authors
- Zu, Y., Kochanek, C. S., Kozłowski, S., & Udalski, A.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2013-02-21
- Volume
- 765
- Issue
- 2
- Pages
- 106
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2082138926
- Cited by
- 340
- References
- 23
- FWCI
- 12.76
- Type
- journal article
- Language
- en
- Open access
- bronze
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