Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2011-07-07
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
Accepted to MNRAS Letters (5 pages, 3 figures)
Scientific paper
We present our near infrared ESO-NTT Ks band observations of the field of IGR J17448-3232 which show no extended emission consistent with the SNR but in which we identify a new counterpart, also visible in Spitzer images up to 24 {\mu}m, at the position of the X-ray point source, CXOUJ174437.3-323222. Multi-wavelength spectral modelling 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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