Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-05T21:45:11.319Z Has data issue: false hasContentIssue false

Optical variability of X-ray selected blazars

Published online by Cambridge University Press:  01 August 2006

Omar M. Kurtanidze
Affiliation:
Abastumani Astrophysical Observatory, 383792 Abastumani, Georgia
Maria G. Nikolashvili
Affiliation:
Abastumani Astrophysical Observatory, 383792 Abastumani, Georgia
Givi N. Kimeridze
Affiliation:
Abastumani Astrophysical Observatory, 383792 Abastumani, Georgia
Lorand A. Sigua
Affiliation:
Abastumani Astrophysical Observatory, 383792 Abastumani, Georgia
Bidzina Z. Kapanadze
Affiliation:
Abastumani Astrophysical Observatory, 383792 Abastumani, Georgia
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.

We present optical R band photometry of nine X-ray selected BL Lac objects: 1ES 0229+200, 1ES 0323+022, 1ES 502+675, 1ES 0647+250, 1ES 0806+524, 1ES0927+500, 1ES 1028+511, 1ES 1959+650, 1ES2344+514.

Variability on long time scales within one magnitude in R band was found for all of the observed objects, except 1ES 0229+200 and 1ES0927+500. Largest variation was detected for 1ES 0502+675 and equals to 1.07 mag. Only few objects show statistically significant variation on intra-day scale.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2007

References

Celone, S. A. et al. 2000, AJ, 121, 90Google Scholar
Fan, J. H., Kurtanidze, O. M. et al. 2004, ChAA, 4, 133Google Scholar
Feigelson, S. D. et al. 1997, ApJ, 302, 337CrossRefGoogle Scholar
Landolt, A. U. 1992, AJ, 104, 340CrossRefGoogle Scholar
Nikolashvili, M. G. et al. 2001, in: Ritz, S. et al. (eds.) 6th Compton Symp. (AIP CP), 587, 333Google Scholar
Kurtanidze, O. M. et al. 1999, in: Raiteri, C. M. et al. (eds.), Blazar Monitoring Towards the 3rd millenium (Osserv. Astron. di Torino: Torino), p. 29Google Scholar
Perlman, E. et al. 1996, A&A, 424, 497Google Scholar
Raiteri, C. M. et al. 1998, A&A, 144, 481Google Scholar
Stetson, P. B. 1987, PASP, 99, 19CrossRefGoogle Scholar
Villata, M. et al. 2000, A&A, 144, 481Google Scholar