[ Previous | Next | ADS ]

New gamma-ray transient, IGR J11305-6256 discovered by INTEGRAL

ATel #278; N. Produit (ISDC, Geneva), J. Ballet (CEN, Saclay), N. Mowlavi (ISDC, Geneva)
on 14 May 2004; 13:05 UT
Credential Certification: Jerome Rodriguez (jrodriguez@cea.fr)

Subjects: Gamma Ray, Request for Observations, Binary, Black Hole, Neutron Star, Transient

A previously unknown gamma-ray transient, IGR J11305-6256, was discovered by the IBIS/ISGRI telescope on May 12, 2004 during INTEGRAL observation of the Carina region. The source position is: R.A.=11h30m34s DEC= -62d55m51s (equinox 2000.0, position uncertainty 5'). It was in the IBIS field-of-view during 58 hours. It was detected in the overall mosaic of all the data of a revolution at an average flux of 8 mCrab in the 20 to 60 keV band. In the X band (3 to 10 keV), the source cannot be seen in the overall mosaic of the JEM-X detector, neither in any individual pointings where this source is in the JEM-X field-of-view. We encourage observation of this source at other wavelengths.