Luminosity function of high-mass X-ray binaries and anisotropy in the distribution of active galactic nuclei toward the Large Magellanic Cloud

In 2003–2012, the INTEGRAL observatory has performed long-term observations of the Large Magellanic Cloud (LMC). At present, this is one of the deepest hard X-ray (20–60 keV) surveys of extragalactic fields in which more than 20 sources of different natures have been detected. We present the results...

Full description

Saved in:
Bibliographic Details
Published in:Astronomy letters 2012-08, Vol.38 (8), p.492-496
Main Authors: Lutovinov, A. A., Grebenev, S.A., Tsygankov, S. S.
Format: Article
Language:eng ; rus
Subjects:
Active galactic nuclei
Anisotropy
Astronomy
Astrophysics and Astroparticles
Double stars
Galaxies
Luminosity
Magellanic clouds
Nonuniformity
Observations and Techniques
Physics
Physics and Astronomy
Population (statistical)
Stars & galaxies
X-ray astronomy
X-rays
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In 2003–2012, the INTEGRAL observatory has performed long-term observations of the Large Magellanic Cloud (LMC). At present, this is one of the deepest hard X-ray (20–60 keV) surveys of extragalactic fields in which more than 20 sources of different natures have been detected. We present the results of a statistical analysis of the population of high-mass X-ray binaries in the LMC and active galactic nuclei (AGNs) observed in its direction. The hard X-ray luminosity function of high-mass X-ray binaries is shown to be described by a power law with a slope α 1.8, that in agreement with the luminosity function measurements both in the LMC itself, but made in the soft X-ray energy band, and in other galaxies. At the same time, the number of detected AGNs toward the LMC turns out to be considerably smaller than the number of AGNs registered in other directions, in particular, toward the source 3C 273. The latter points to the nonuniformity of the distribution of matter in the local Universe.
ISSN:1063-7737
1562-6873
DOI:10.1134/S1063773712080051