The IBIS soft gamma-ray sky after 1000 INTEGRAL orbits

TL;DR

This paper presents a comprehensive catalog of 939 soft gamma-ray sources detected by IBIS during the first 1000 INTEGRAL orbits, including 120 new discoveries, with detailed source properties and variability analysis.

Contribution

It provides the first extensive all-sky soft gamma-ray source catalog based on 110 Ms of data, including new sources and detailed source characterization.

Findings

939 sources detected above 4.5 sigma

120 new gamma-ray emitters identified

Variability and transient behaviors documented

Abstract

We report here an all-sky soft gamma-ray source catalog based on IBIS observations performed during the first 1000 orbits of INTEGRAL. The database for the construction of the source list consists of all good quality data available from launch in 2002 up to the end of 2010. This corresponds to $\sim$110 Ms of scientific public observations with a concentrated coverage on the Galactic Plane and extragalactic deep exposures. This new catalog includes 939 sources above a 4.5 sigma significance threshold detected in the 17-100 keV energy band, of which 120 represent previously undiscovered soft gamma-ray emitters. The source positions are determined, mean fluxes are provided in two main energy bands, and are reported together with the overall source exposure. Indicative levels of variability are provided, and outburst times and durations are given for transient sources. Comparison is made with previous IBIS catalogs, and those from other similar missions.