SIMBAD references

2005MNRAS.361..155W - Mon. Not. R. Astron. Soc., 361, 155-159 (2005/July-3)

Optical monitoring of PKS 1510-089: a binary black hole system?


Abstract (from CDS):

Three deep flux minima with nearly the same time-scales and intervals have been observed for the blazar PKS 1510-089 in the past few years. It has been proposed that there is a binary black hole system at the nucleus of this object, and a new minimum was predicted to occur in 2002 March. We monitored this source with a 60/90 cm Schmidt telescope from 2002 February to April. In combination with the data obtained by Xie et al. in the same period, for the 2002 minimum we present a nearly symmetric light curve, which would be required by an eclipsing model of a binary black hole system. We also constrain the time-scale of the minimum to be 35 min, which is more consistent with the time-scales (∼42 min) of the three previous minima than is the 89 min time-scale given by Xie et al. The wiggling milliarcsecond radio jet observed in this object is taken as further evidence for the binary black hole system. The `coupling' of the periodicity in the light curve and the helicity in the radio jet is discussed for blazars in the framework of a binary black hole system.

Abstract Copyright: 2005 RAS

Journal keyword(s): galaxies: active - galaxies: jets - galaxies: photometry - quasars: individual: PKS 1510-089

CDS comments: In fig.1 : Comparison stars : 1 = CMC 811022, 2 = CMC 712685, 3 = CMC 712686, 4 not in simbad.

Simbad objects: 11

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