Discovery of the infrared counterpart of CXOUJ174437.3-323222 in the field of IGRJ17448-3232: A blazar candidate viewed through the Galactic Centre?

P. A. Curran, S. Chaty, J. A. Zurita Heras, J. A. Tomsick, T. J. Maccarone

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4 Scopus citations

Abstract

We present our near-infrared ESO-NTT KS band observations of the field of IGRJ17448-3232 which show no extended emission consistent with the supernova remnant (SNR), but in which we identify a new counterpart, also visible in Spitzer images up to 24μm, at the position of the X-ray point source, CXOUJ174437.3-323222. Multiwavelength spectral modelling shows that the data are consistent with a reddened and absorbed single power law over 5 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.

Original languageEnglish
Pages (from-to)L26-L30
JournalMonthly Notices of the Royal Astronomical Society: Letters
Volume417
Issue number1
DOIs
StatePublished - Oct 2011

Keywords

  • Infrared: general
  • Radiation mechanisms: non-thermal
  • X-rays: individual: CXOUJ174437.3-323222
  • X-rays: individual: IGRJ17448-3232

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