SIMBAD references

2016MNRAS.457.2433P - Mon. Not. R. Astron. Soc., 457, 2433-2444 (2016/April-2)

A search for pair haloes around active galactic nuclei through a temporal analysis of Fermi-Large Area Telescope data.

PROKHOROV D.A. and MORAGHAN A.

Abstract (from CDS):

We develop a method to search for pair haloes around active galactic nuclei (AGN) through a temporal analysis of γ-ray data. The basis of our method is an analysis of the spatial distributions of photons coming from AGN flares and from AGN quiescent states and a further comparison of these two spatial distributions. This method can also be used for a reconstruction of a point spread function (PSF). We found no evidence for a pair halo component through this method by applying it to the Fermi-Large Area Telescope (LAT) data in the energy bands of 4.5-6, 6-10, and >10 GeV and set upper limits on the fraction of photons attributable to a pair halo component. An illustration of how to reconstruct the PSF of Fermi-LAT is given. We demonstrate that the PSF reconstructed by using this method is in good agreement with that which was obtained by using the γ-ray data taken by LAT in the direction of the Crab pulsar and nebula.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): methods: data analysis - galaxies: active - intergalactic medium - gamma-rays: general

Simbad objects: 16

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2019.09.23-16:52:48

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