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Multi-color optical variability of the TeV blazar Mrk 501 in the low-state
A. C. Gupta1; Deng WG(邓文国)1,2; Joshi, UC3; Bai JM(白金明)1; Lee, MG4; Gupta, AC (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Yunnan, Peoples R China.
发表期刊NEW ASTRONOMY
2008-08
卷号13期号:6页码:375-384
DOI10.1016/j.newast.2007.12.001
产权排序第1完成单位
收录类别SCI
关键词Optical Observations - Bl Lacertae Objects Individual (Mrk 501)
摘要We report results based on the monitoring of the BL Lac object Mrk 501 in the optical (B, V and R) passbands from March to May 2000. Observations spread over 12 nights were carried out using 1.2 m Mount Abu Telescope, India and 61 cm Telescope at Sobaeksan Astronomy Observatory, South Korea. The aim is to study the intra-day variability (IDV), short term variability and color variability in the low state of the source. We have detected flux variation of 0.05 mag in the R-band in time scale of 15 min in one night. In the B and V passbands, we have less data points and it is difficult to infer any IDVs. Short term flux variations are also observed in the V and R bands during the observing run. No significant variation in color (B-R) has been detected but (V-R) shows variation during the present observing run. Assuming the shortest observed time scale of variability (15 min) to represent the disk instability or pulsation at a distance of five Schwarschild radii from the black hole (BH), mass of the central BH is estimated similar to 1.20 x 10(8) M circle dot. (c) 2007 Elsevier B.V. All rights reserved.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1384-1076
URL查看原文
归档日期2009-05-26
WOS记录号WOS:000255615900001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]BL LACERTAE OBJECTS ; ACTIVE GALACTIC NUCLEI ; RAY LOUD BLAZARS ; I RADIO-GALAXIES ; BLACK-HOLE MASS ; INTRADAY VARIABILITY ; X-RAY ; LAC OBJECTS ; ACCRETION DISKS ; COMPLETE SAMPLE
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7037
专题星系研究组
通讯作者Gupta, AC (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Yunnan, Peoples R China.
作者单位1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming, Yunnan 650011, China
2.Department of Physics, Yunnan University, Kunming, Yunnan 650091, China
3.Astronomy and Astrophysics Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380 009, India
4.Astronomy Program, Seoul National University, Seoul 151-742, South Korea
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A. C. Gupta,Deng WG,Joshi, UC,et al. Multi-color optical variability of the TeV blazar Mrk 501 in the low-state[J]. NEW ASTRONOMY,2008,13(6):375-384.
APA A. C. Gupta,Deng WG,Joshi, UC,Bai JM,Lee, MG,&Gupta, AC .(2008).Multi-color optical variability of the TeV blazar Mrk 501 in the low-state.NEW ASTRONOMY,13(6),375-384.
MLA A. C. Gupta,et al."Multi-color optical variability of the TeV blazar Mrk 501 in the low-state".NEW ASTRONOMY 13.6(2008):375-384.
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