Hard X-ray Variability of the Brightest Swift/BAT AGN

Details Hard X-ray Variability of the Brightest Swift/BAT AGN Hard X-ray Variability of the Brightest Swift/BAT AGN

2011-06-20

arxiv.org/abs/1106.3997v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

6 Pages, proceedings of the IXO HTRS Conference 2011, Fast X-ray timing and spectroscopy at extreme count rates, PoS(HTRS 2011

Scientific paper

Variability is one of the hallmarks of Active Galactic Nuclei. The Burst Alert Telescope onboard of Swift, with its homogeneous coverage of the sky is a formidable tool to study variability at hard X-rays. We present here the analysis of the 1-month binned Swift/BAT lightcurves of the 20 brightest Active Galactic Nuclei in the hard X-ray sky. The sample consists of 2 blazars, 3 radio galaxies, 6 Seyfert 1/1.5s, 8 Seyfert 2s and 1 Narrow Line Seyfert 1. We found that all the objects show variability, and most of them have a value of the fractional root mean squared variability amplitude of Fvar \sim 0.2 - 0.3. We did not find any significant correlation of Fvar with the column density or the luminosity in our sample.

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