THE OPTICAL MICROVARIABILITY AND SPECTRAL CHANGES OF THE BL LACERTAE OBJECT S5 0716+714
THE OPTICAL MICROVARIABILITY AND SPECTRAL CHANGES OF THE BL LACERTAE OBJECT S5 0716+714
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BL 蝎子物体 S5 0716 714 的光学微变性和光谱变化
DOI:
10.1088/0067-0049/185/2/511
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发表时间:
2009-10
影响因子:
8.7
通讯作者:
Fan, J. H.
中科院分区:
文献类型:
--
作者:
Poon, H.;Fu, J. N.;Fan, J. H.
We monitored the BL Lac object S5 0716+714 in the optical band during 2008 October and December and 2009 February with a best temporal resolution of about 5 minutes in the BVRI bands. Four fast flares were observed with amplitudes ranging from 0.3 to 0.75 mag. The source remained active during the whole monitoring campaign, showing microvariability in all days except for one. The overall variability amplitudes are ΔB ∼ 0.ͫ89, ΔV ∼ 0.ͫ80, ΔR ∼ 0.ͫ73, and ΔI∼ 0.ͫ51. Typical timescales of microvariability range from 2 to 8 hr. The overall V − R color index ranges from 0.37 to 0.59. Strong bluer-when-brighter chromatism was found on internight timescales. However, a different spectral behavior was found on intranight timescales. A possible time lag of ∼11 minutes between B and I bands was found on one night. The shock-in-jet model and geometric effects can be applied to explain the source's intranight behavior.
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影响因子:
6.5
作者:
L. Foschini;G. Tagliaferri;E. Pian;G. Ghisellini;A. Treves;L. Maraschi;F. Tavecchio;G. Cocco;Simon Rosen
通讯作者:
L. Foschini;G. Tagliaferri;E. Pian;G. Ghisellini;A. Treves;L. Maraschi;F. Tavecchio;G. Cocco;Simon Rosen
DOI:
10.1088/1674-4527/9/3/010
发表时间:
2009-03
期刊:
Research in Astron. Astrophys.
影响因子:
--
作者:
周爱英
通讯作者:
周爱英
DOI:
10.1086/172453
发表时间:
1993-04
期刊:
The Astrophysical Journal
影响因子:
--
作者:
A. Mangalam;P. Wiita
通讯作者:
A. Mangalam;P. Wiita
DOI:
10.1046/j.1365-8711.2002.05528.x
发表时间:
2002-08
影响因子:
4.8
作者:
G. Xie;G. Xie;E. Liang;E. Liang;S. Zhou;S. Zhou;Kuanyi Li;B. Dai;B. Dai;Li Ma
通讯作者:
G. Xie;G. Xie;E. Liang;E. Liang;S. Zhou;S. Zhou;Kuanyi Li;B. Dai;B. Dai;Li Ma
影响因子:
64.8
作者:
H. R. Miller;M. Carini;B. Goodrich
通讯作者:
H. R. Miller;M. Carini;B. Goodrich