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Swift/XRT detection of the hard X-ray source IGR J14549-6459

ATEL # 2562; M. Fiocchi, A. Bazzano (IASF/INAF Rome), R. Landi, L. Bassani (IASF/INAF Bologna), N. Gehrels (NASA/GSFC), J. Kennea (PSU), A.J. Bird (Univ. Southampton)
on 14 Apr 2010; 18:39 UT
Password Certification: Raffaella Landi (

Subjects: X-ray, Gamma Ray, AGN, Stars

We report the result of a short (900 sec) Swift/XRT observation of the field containing IGR J14549-6459, a new INTEGRAL source recently reported in the 4th IBIS catalogue (Bird et al. 2010, ApJS, 186, 1). The XRT data analysis is performed using the standard procedure described in details in Landi et al. 2010 (MNRAS, 403, 945).

The XRT observation locates the X-ray counterpart of IGR J14549-6459 at RA(J2000)= 14h 55m 23.9s, Dec(J2000)= -65d 00m 03.2s with an error of 6". Within the XRT error box we find two USNO-B1.0 sources at RA(J2000)= 14h 55m 23.913s, Dec(J2000)= -65d 00m 01.88s and RA(J2000)= 14h 55m 24.161s Dec(J2000)= -65d 00m 00.14s having R magnitudes in the range 16.13-16.67 and 16.90-16.97 respectively. The first object has a counterpart in the 2MASS survey catalogue with J, H and K magnitudes of 14.98, 13.82 and 12.80.

The X-ray data are best modelled with an absorbed (NH(Gal) = 3.20 x 1021 cm-2 plus NH(intr) = 1.38 x 1022 cm-2) power law (Gamma = 1.8 fixed) having an observed 2-10 keV flux of 8.8 x 10-13 erg cm-2 s-1.

Optical follow-up observations of the possible counterparts is highly encouraged.

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