INTEGRAL/IBIS 7-year All-Sky Hard X-Ray Survey. Part II: Catalog of Sources

TL;DR

This paper presents a comprehensive catalog of 521 hard X-ray sources detected over seven years by INTEGRAL, including detailed classifications and high identification completeness, aiding population and astrophysical studies.

Contribution

It provides the first extensive catalog of INTEGRAL/IBIS sources with detailed classifications and high detection completeness, enhancing the understanding of hard X-ray source populations.

Findings

521 sources detected over seven years

High identification completeness (~96% extragalactic, ~94% Galactic)

Catalog includes diverse source types like X-ray binaries, AGNs, and galaxy clusters

Abstract

This paper is the second in a series devoted to the hard X-ray (17-60 keV) whole sky survey performed by the INTEGRAL observatory over seven years. Here we present a catalog of detected sources which includes 521 objects, 449 of which exceed a 5 sigma detection threshold on the time-averaged map of the sky, and 53 were detected in various subsamples of exposures. Among the identified sources with known and suspected nature, 262 are Galactic (101 low-mass X-ray binaries, 95 high-mass X-ray binaries, 36 cataclysmic variables, and 30 of other types) and 219 are extragalactic, including 214 active galactic nuclei (AGNs), 4 galaxy clusters, and galaxy ESO 389-G 002. The extragalactic (|b|>5 deg) and Galactic (|b|<5 deg) persistently detected source samples are of high identification completeness (respectively ~96% and ~94%) and valuable for population studies.