SIMBAD references

2017ApJ...835..260Z - Astrophys. J., 835, 260-260 (2017/February-1)

Revisiting quasi-periodic modulation in γ-ray blazar PKS 2155-304 with Fermi Pass 8 data.

ZHANG P.-F., YAN D.-H., LIAO N.-H. and WANG J.-C.

Abstract (from CDS):

We examine the gamma-ray quasi-periodic variability of PKS 2155-304 with the latest publicly available Fermi-LAT Pass 8 data, which covers the years from 2008 August to 2016 October. We produce the light curves in two ways: the exposure-weighted aperture photometry and the maximum likelihood optimization. The light curves are then analyzed by using Lomb-Scargle Periodogram (LSP) and Weighted Wavelet Z-transform, and the results reveal a significant quasi-periodicity with a period of 1.74 ± 0.13 years and a significance of ∼4.9σ. The constraint of multifrequencies quasi-periodic variabilities on blazar emission model is discussed.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): BL Lacertae objects: individual: PKS 2155-304 - galaxies: jets - gamma-rays: galaxies - gamma-rays: general - gamma-rays: general

Simbad objects: 4

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