Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2011-10-07
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
6 pages, 3 figures; accepted to Proceedings of Science for the meeting "The Extreme and Variable High Energy Sky" (Sardinia, S
Scientific paper
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.
Chaty Sylvain
Curran Peter A.
Maccarone Thomas J.
Tomsick John A.
Zurita Heras Juan Antonio
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