IGR J17448-3232 point source: A blazar candidate viewed through the Galactic centre?
Abstract
The error region of the INTEGRAL source, IGR J17448-3232, contains an X-ray point source at the edge of a ~3' radius extended X-ray source. It has been suggested that the extended emission is a young supernovae remnant (SNR) while the point source may be an isolated neutron star, associated with the SNR, that received a kick when the supernova occurred. We identify the infrared counterpart of the X-ray point source, visible from 2.2 to 24 microns, and place limits on the flux at longer wavelengths by comparison with radio catalogues. Multi-wavelength spectral modeling shows that the data are consistent with a reddened and absorbed single power law over five orders of magnitude in frequency. This implies non-thermal, possibly synchrotron emission that renders the previous identification of this source as a possible pulsar, and its association to the SNR, unlikely; we instead propose that the emission may be due to a blazar viewed through the plane of the Galaxy.
Keywords
Cite
@article{arxiv.1110.1474,
title = {IGR J17448-3232 point source: A blazar candidate viewed through the Galactic centre?},
author = {P. A. Curran and S. Chaty and J. A. Zurita Heras and J. A. Tomsick and T. J. Maccarone},
journal= {arXiv preprint arXiv:1110.1474},
year = {2012}
}
Comments
6 pages, 3 figures; accepted to Proceedings of Science for the meeting "The Extreme and Variable High Energy Sky" (Sardinia, September 2011)