Hostname: page-component-84b7d79bbc-2l2gl Total loading time: 0 Render date: 2024-07-29T11:48:17.120Z Has data issue: false hasContentIssue false
  • English
  • Français

The Correlated Multi-color Optical Variations of BL Lac Object S5 0716+714

Published online by Cambridge University Press:  02 January 2013

Bingkai Zhang ,
Benzhong Dai ,
Li Zhang ,
Jiali Liu  and
Zhen Cao
Bingkai Zhang*
Affiliation:
Department of Physics, Fuyang Normal University, Fuyang 236041, China
Benzhong Dai
Affiliation:
Department of Physics, Yunnan University, Kunming 650091, China
Li Zhang
Affiliation:
Department of Physics, Yunnan University, Kunming 650091, China National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China
Jiali Liu
Affiliation:
The Key Laboratory of Particle and Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
Zhen Cao
Affiliation:
The Key Laboratory of Particle and Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
*
ECorresponding author. Email: zhangbk@mail.ihep.ac.cn
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

S5 0716+714 is a well-studied BL Lac object in the sky. Verifying the existence of correlations among the flux variations in different bands serves as an important tool to investigate the emission processes. To examine the possible existence of a lag between variations in different optical bands on this source, we employ a discrete correlation function analysis on the light curves. In order to obtain statistically meaningful values for the cross-correlation time lags and their related uncertainties, we perform Monte Carlo simulations called ‘flux redistribution/random subset selection’. Our analysis confirms that the variations in different optical light curves are strongly correlated. The time lags show a hint of the variations in high frequency band leading those in low frequency band of the order of a few minutes.

Keywords

BL Lacs: generalBL Lacs: individual (S5 0716+714)
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 27 , Issue 3 , 2010 , pp. 296 - 301
Copyright
Copyright © Astronomical Society of Australia 2010

References

Arévalo, P. et al. , 2008, MNRAS, 389, 1479CrossRefGoogle Scholar
Bach, U. et al. , 2005, A&A, 433, 815Google Scholar
Bach, U. et al. , 2006, A&A, 452, 83Google Scholar
Bai, J.M. & Lee, M.G., 2003, ApJ, 585, L113CrossRefGoogle Scholar
Biermann, P. et al. , 1981, ApJ, 247, L53Google Scholar
Bignall, H.E. et al. , 2003, ApJ, 585, 653CrossRefGoogle Scholar
Blandford, R.D. & Königl, A., 1979, ApJ, 232, 34CrossRefGoogle Scholar
Bonning, E.W. et al. , 2009, ApJ, 697, L81CrossRefGoogle Scholar
Chatterjee, R. et al. , 2008, ApJ, 689, 79CrossRefGoogle Scholar
Chen, A.W. et al. , 2008, A&A, 489, L37Google Scholar
Dai, B.Z., Zhang, B.K. & Zhang, L., 2006, NewA, 11, 471Google Scholar
Edelson, R.A. & Krolik, J.H., 1988, ApJ, 333, 646CrossRefGoogle Scholar
Foschini, L. et al. , 2006, A&A, 455, 871Google Scholar
Fuhrmann, L. et al. , 2008, A&A, 490, 1019Google Scholar
Georganopoulos, M. & Marscher, A.P., 1998, ApJ, 506, L11Google Scholar
Ghisellini, G. et al. , 1997, A&A, 327, 61Google Scholar
Gu, M.F. et al. , 2006, A&A, 450, 39Google Scholar
Gupta, A.C., Fan, J.H., Bai, J.M. & Wagner, S.J., 2008, AJ, 135, 1384Google Scholar
Heidt, J. & Wagner, S.J., 1996, A&A, 305, 42Google Scholar
Kühr, H. et al. , 1981, AJ, 86, 854CrossRefGoogle Scholar
Marscher, A.P., 2001, ASPC, 224, 23Google Scholar
Marshall, K., Ryle, W.T. & Miller, H.R., 2008, ApJ, 677, 880Google Scholar
Montagni, F. et al. , 2006, A&A, 451, 435Google Scholar
Nesci, R. et al. , 2005, AJ, 130, 1466Google Scholar
Nilsson, K., Pursimo, T., Sillanpää, A., Takalo, L.O. & Lindfors, E., 2008, A&A, 487, L29Google Scholar
Ostorero, L. et al. , 2006, A&A, 451, 797Google Scholar
Peterson, B.M. et al. , 1998, PASP, 110, 660CrossRefGoogle Scholar
Pian, E. et al. , 2005, A&A, 429, 427Google Scholar
Qian, B., Tao, J. & Fan, J., 2000, PASJ, 52, 1075Google Scholar
Qian, B., Tao, J. & Fan, J., 2002, AJ, 123, 678Google Scholar
Quirrenbach, A. et al. , 1991, ApJ, 372, L71CrossRefGoogle Scholar
Quirrenbach, A. et al. , 2000, A&AS, 141, 221Google Scholar
Raiteri, C.M. et al. , 2001, A&A, 377, 396Google Scholar
Raiteri, C.M. et al. , 2003, A&A, 402, 151Google Scholar
Raiteri, C.M. et al. , 2008, A&A, 480, 339Google Scholar
Sagar, R., Gopal-Krishna, M.V., Pandey, A.K., Bhatt, B.C. & Wagner, S.J., 1999, A&AS, 134, 453Google Scholar
Stalin, C.S. et al. , 2006, MNRAS, 366, 1337Google Scholar
Ulrich, M.H., Maraschi, L. & Urry, C.M., 1997, ARA&A, 35, 445Google Scholar
Urry, C.M. & Padovani, P., 1995, PASP, 107, 803CrossRefGoogle Scholar
Villata, M. et al. , 2000, A&A, 363, 108Google Scholar
Villata, M. et al. , 2008, A&A, 481, L79Google Scholar
Villata, M. et al. , 2009, A&A, 501, 455Google Scholar
Wagner, S.J. et al. , 1996, AJ, 111, 2187CrossRefGoogle Scholar
Wu, J. et al. , 2005, AJ, 129, 1818CrossRefGoogle Scholar
Wu, J. et al. , 2007, AJ, 133, 1599CrossRefGoogle Scholar
Xie, G.Z. et al. , 2004, MNRAS, 348, 831CrossRefGoogle Scholar
Zhang, X. et al. , 2008, AJ, 136, 1846CrossRefGoogle Scholar