Open AccessA study of the light curve periodic behavior of BL Lac object S5 0716+714
Author(s) -
Haojing Zhang,
Xiong Zhang
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.4305
Subject(s) - bl lac object , light curve , physics , coincidence , variation (astronomy) , astrophysics , blazar , medicine , gamma ray , alternative medicine , pathology
From a large volume of literature we have collected a total of 16818 datapoints of effective observation of BL Lac object S5 0716+714 in the optical band, and constructed its long-term light curve from 1994 to 2006 AD. The light curve shows that S5 0716+714 is very active and exhibits very complicated non-sinusoidal variations. We used power spectrum method to analyze the period of light curve variation. Our results show that the long-term period of variation is 1.1 year. Time of coincidence is possible, Raiteri et al. have found the period of 3.3 year, which may be a multiple of 1.1-year periods. We expect next burst in 2006 July.