The variability analysis of PKS 2155-304
J.H. Fan 1,2 and
R.G. Lin 1
Received 9 July 1998 / Accepted 10 September 1999
In this paper, the post-1977 photometric observations of PKS 2155-304 are compiled and used to discuss the variation periodicity. Largest amplitude variations (; ; ; ; ) and color indices (; ; ; ) are found. The Jurkevich's method and DCF (Discrete Correlation Function) method indicate possible periods of 4.16-years and 7.0-years in the V light curve.
Key words: galaxies: BL Lacertae objects: individual: PKS 2155-304
© European Southern Observatory (ESO) 2000
Online publication: March 21, 2000