TY - JOUR
T1 - Discovery of the infrared counterpart of CXOUJ174437.3-323222 in the field of IGRJ17448-3232
T2 - A blazar candidate viewed through the Galactic Centre?
AU - Curran, P. A.
AU - Chaty, S.
AU - Zurita Heras, J. A.
AU - Tomsick, J. A.
AU - Maccarone, T. J.
PY - 2011/10
Y1 - 2011/10
N2 - 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.
AB - 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.
KW - Infrared: general
KW - Radiation mechanisms: non-thermal
KW - X-rays: individual: CXOUJ174437.3-323222
KW - X-rays: individual: IGRJ17448-3232
UR - http://www.scopus.com/inward/record.url?scp=84055198651&partnerID=8YFLogxK
U2 - 10.1111/j.1745-3933.2011.01113.x
DO - 10.1111/j.1745-3933.2011.01113.x
M3 - Article
AN - SCOPUS:84055198651
SN - 1745-3933
VL - 417
SP - L26-L30
JO - Monthly Notices of the Royal Astronomical Society: Letters
JF - Monthly Notices of the Royal Astronomical Society: Letters
IS - 1
ER -