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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.
Source PublicationNEW ASTRONOMY
2008-08
Volume13Issue:6Pages:375-384
DOI10.1016/j.newast.2007.12.001
Contribution Rank第1完成单位
Indexed BySCI
KeywordOptical Observations - Bl Lacertae Objects Individual (Mrk 501)
AbstractWe 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.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN1384-1076
URL查看原文
Archive Date2009-05-26
WOS IDWOS:000255615900001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordBL 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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Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7037
Collection星系研究组
Corresponding AuthorGupta, AC (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Yunnan, Peoples R China.
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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