Quasi-simultaneous two-band optical variability of the blazars 1ES 1959+650 and 1ES 2344+514

被引：61

作者：

Gaur, Haritma ^{[1
,2
]}

Gupta, Alok C. ^{[1
,2
]}

Strigachev, A. ^{[3
,4
]}

Bachev, R. ^{[3
,4
]}

Semkov, E. ^{[3
,4
]}

Wiita, Paul J. ^{[5
]}

Peneva, S. ^{[3
,4
]}

Boeva, S. ^{[3
,4
]}

Kacharov, N. ^{[3
,4
,6
]}

Mihov, B. ^{[3
,4
]}

Ovcharov, E. ^{[6
]}

机构：

[1] Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263129, Uttarakhand, India

[2] DDU Gorakhpur Univ, Dept Phys, Gorakhpur 273009, UP, India

[3] Bulgarian Acad Sci, Natl Astron Observ, BU-1784 Sofia, Bulgaria

[4] Bulgarian Acad Sci, Inst Astron, BU-1784 Sofia, Bulgaria

[5] Coll New Jersey, Dept Phys, Ewing, NJ 08628 USA

[6] Univ Sofia, Dept Astron, Sofia 1164, Bulgaria

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2012年 / 420卷 / 04期

关键词：

galaxies: active; BL Lacertae objects: general; BL Lacertae objects: individual: 1ES 1959+650; BL Lacertae objects: individual: 1ES 2344+514; galaxies: photometry; BL LACERTAE OBJECTS; SPECTRAL ENERGY-DISTRIBUTIONS; NEAR-INFRARED INTRADAY; GAMMA-RAY EMISSION; RELATIVISTIC JETS; RADIO-QUIET; MULTIWAVELENGTH OBSERVATIONS; COMPARISON STARS; ACTIVE NUCLEI; LOUD;

D O I：

10.1111/j.1365-2966.2011.20243.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the results of quasi-simultaneous two-filter optical monitoring of two high-energy peaked blazars, 1ES 1959+650 and 1ES 2344+514, to search for microvariability and short-term variability (STV). We carried out optical photometric monitoring of these sources in an alternating sequence of B and R passbands, and have 24 and 19 nights of new data for these two sources, respectively. No genuine microvariability (intranight variability) was detected in either of these sources. This non-detection of intranight variations is in agreement with the conclusions of previous studies that high-energy peaked BL Lacs are intrinsically less variable than low-energy peaked BL Lacs in the optical bands. We also report the results of STV studies for these two sources between 2009 July and 2010 August. Genuine STV is found for the source 1ES 1959+650 but not for 1ES 2344+514. We briefly discuss possible reasons for the difference between the intranight variability behaviour of high- and low-energy peaked blazars.

引用

页码：3147 / 3162

页数：16

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