Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011atel.3256....1f&link_type=abstract
The Astronomer's Telegram, #3256
Astronomy and Astrophysics
Astronomy
1
X-Ray, Gamma Ray
Scientific paper
We report the results of X-ray follow-up observations performed with Swift/XRT of two unidentified INTEGRAL sources, IGRJ12470-5407 and IGRJ18532+0416, listed in the 4th IBIS Survey Catalogue (Bird et al. 2010, ApJS, 186, 1).
IGRJ12470-5407 This source is a very weak IBIS unidentified object with a flux < 0.3 mCrab in the 20-40 keV energy band ( Bird et al. 2010, ApJS, 186, 1). The field of this source was observed with Swift-XRT on 2011-02-17 03:33:01 and 2011-02-19 18:06:01, for a total exposure time of 4312 s. Within the 99% IBIS positional uncertainty we found only one XRT source above 3 sigma c.l., located at R.A.(J2000) = 12h 47m 50.80s and Dec.(J2000) = -54d 06m 30.80s with an uncertainty of 5 arcsec.
Bassani Loredana
Bazzano Angela
Bird Andrew J.
Fiocchi Mariateresa
Gehrels
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