Physics
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ap%26ss.327...35m&link_type=abstract
Astrophysics and Space Science, Volume 327, Issue 1, pp.35-58
Physics
1
Black Hole Physics, Galaxies: Active, Galaxies: Nuclei, Galaxies: Photometry, Bl Lac Objects: General
Scientific paper
We present the results of the monitoring of a sample of 5 HBLs in the B, V and R bands during 2003-2008. All sources in our monitoring project show significant rapid optical variations, except 1ES 1959+650, however; for 1ES 1959+650, the gamma-ray variability on a timescale of ˜7 hours has been observed by Holder et al. (Astrophys. J. 583:L9, 2003). Using these variability timescales, we estimate the black hole masses for each source with the Kerr black hole theory.
Dai* Hongjie
Li Kwok Hung
Ma Liangping
Xie G.-Zh.
Yi Ting-Feng
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