SIMBAD references

2019MNRAS.482.1270C - Mon. Not. R. Astron. Soc., 482, 1270-1274 (2019/January-1)

Gamma-ray quasi-periodicities of blazars. A cautious approach.


Abstract (from CDS):

The availability of about a decade of uninterrupted sky monitoring by the Fermi satellite has made it possible to study long-term quasi-periodicities for high-energy sources. It is therefore not a surprise that for several blazars in the recent literature claims for such periodicities, with various level of confidence, have been reported. The confirmation of these findings could be of tremendous importance for the physical description of this category of sources and have consequences for the gravitational wave background interpretation. In this work, we carry out a temporal analysis of the Fermi light curves for several of the sources mentioned in recent literature by means of a homogeneous procedure and find that, globally, no strong cases for blazar year-long quasi-periodicities can be confirmed. The computed power spectral densities are all essentially consistent with being generated by red-noise only. We further discuss the meaning and the limitations of the present analysis.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): method: statistics - galaxies: active - BL Lacertae objects: general - BL Lacertae objects: individual: ((PKS 0301-243, PKS 0426-380, PKS 0537-441, S5 0716+714, PKS 0805-077, 4C+01.28, PG 1553+113, PKS 2052-474, PKS 2155-304, BL Lac)) - galaxies: jets

Simbad objects: 10

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