Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006atel..939....1k&link_type=abstract
The Astronomer's Telegram, #939
Astronomy and Astrophysics
Astronomy
7
X-Ray, Gamma Ray, Agn, Binaries, Neutron Stars, Quasars
Scientific paper
In an ultra-deep INTEGRAL exposure (4.1 Ms) on the Cassiopeia region, resulting from the combination of observations performed between December 12, 2003 and January 10, 2006 (INTEGRAL revolutions 142-396), two new hard X-ray sources have been detected: IGR J00335+6126 and IGR J00254+6822. A deep 1.9 Ms INTEGRAL mosaic centered on gamma-ray binary LS I+61 303 using observations performed between March 3, 2003 and July 4, 2006 (INTEGRAL revolutions 47 and 454) revealed the presence of a previously unknown hard X-ray source, IGR J02501+5440.
den Hartog Peter R.
Hermsen Willem
Kuiper Lucien
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