The characteristic periodicity analysis of the radio flux variability of quasar PKS 1510-089

Details The characteristic periodicity analysis of the radio flux variability of quasar PKS 1510-089 The characteristic periodicity analysis of the radio flux variability of quasar PKS 1510-089

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009scchg..52.1442z&link_type=abstract

Science in China Series G: Physics, Mechanics and Astronomy, Volume 52, Issue 9, pp.1442-1448

Astronomy and Astrophysics

Astronomy

Quasar Object Individual (Pks 1510-089), Radio Band&Rsquo, S Periodicity Analysis, Wavelet Analysis, Radio Flux, Black Hole Mass

Scientific paper

A wavelet analysis method is introduced to study the possible periods of PKS 1510-089 in radio bands. By compiling the radio light curve of PKS 1510-089 at frequencies of 22 and 37 GHz from 1990 to 2005, and using the wavelet analysis method, the evidence of quasi-periodic activity in PKS 1510-089 was obtained. The results indicate that: (1) There are two stable outburst periods of T 1=(1.80±0.06) yr and T 2= (0.90±0.07) yr presenting in the isoplethal map of PKS 1510-089 at the radio band 37 GHz; (2) there is an outburst period of T 1=(1.80±0.06) yr presenting at the radio band 22 GHz; (3) by the continuum of the isograms map, we find the primary period of PKS 1510-089 is T 1=(1.80±0.06) yr, and the period of T 2= (0.90±0.07) yr may be the half period. The above results are consistent with the reports of Xie et al. (2004, 2005, 2008), Wu et al. (2005) and Liu & Fan (2007), using the other methods. We can expect that the next burst will be in January 2011.

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