Quasi-simultaneous two-band optical variability of the blazars 1ES 1959+650 and 1ES 2344+514
Quasi-simultaneous two-band optical variability of the blazars 1ES 1959+650 and 1ES 2344+514
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DOI：
10.1111/j.1365-2966.2011.20243.x
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发表时间：
2011-12
影响因子：
4.8
通讯作者：
H. Gaur;Alok C. Gupta;A. Strigachev;R. Bachev;E. Semkov;P. Wiita;S. Peneva;S. Boeva;N. Kacharov
中科院分区：
文献类型：
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作者：
H. Gaur;Alok C. Gupta;A. Strigachev;R. Bachev;E. Semkov;P. Wiita;S. Peneva;S. Boeva;N. Kacharov
本文报道了对两颗高能尖峰耀变体1ES 1959+650和1ES 2344+514的准同步双滤光片光学监测结果，以寻找微变和短期变（STV）。我们进行了光学光度监测这些来源的交替序列的B和R通带，并有24和19个晚上的新数据，这两个来源，分别。在这些来源中均未检测到真正的微变异性（夜间变异性）。这种未检测到夜内变化与先前研究的结论一致，即在光学波段中，高能量峰值BL拉克本质上比低能量峰值BL拉克可变性更小。我们还报告了2009年7月至2010年8月期间这两个来源的STV研究结果。在源1ES 1959+650中找到了真正的STV，但在源1ES 2344+514中找不到。我们简要地讨论了可能的原因之间的差异，高，低能量峰值耀变体的intranight可变性行为。
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.