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The First IBIS/ISGRI Soft Gamma-Ray Galactic Plane Survey Catalog

The First IBIS/ISGRI Soft Gamma-Ray Galactic Plane Survey Catalog

Publication date: 21 May 2004

Authors: Bird, A.J. et al.

Journal: Astrophysical Journal Letters
Volume: 607
Issue: 1
Page: L33-L37
Year: 2004

Copyright: American Astronomical Society

We report the first high-energy survey catalog obtained with the IBIS gamma-ray imager on board INTEGRAL. The analysis has been performed on the first-year Core Program ISGRI data comprising both Galactic Plane Scan and Galactic Centre Deep Exposure pointings for a total exposure time exceeding 5 Ms. This initial survey has revealed the presence of ~120 sources detected with the unprecedented sensitivity of ~1 mcrab in the energy range 20-100 keV. Each source is located to an accuracy between 1' and 3', depending on its brightness. The outstanding IBIS capability to locate soft gamma-ray emitters has allowed us to identify most of the detected sources with already known Galactic X-ray binary systems, while 28 of the objects are of unknown nature.

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