INTEGRAL/IBIS deep extragalactic survey: M81, LMC and 3C 273/Coma fields
Ilya A. Mereminskiy (1), Roman A. Krivonos (1), Alexander A. Lutovinov, (1), Sergey Yu. Sazonov (1, 2), Mikhail G. Revnivtsev (1), Rashid A., Sunyaev (1, 3) ((1) Space Research Institute, Moscow, Russia, (2) Moscow, Institute of Physics, Technology, Moscow Region, Russia, (3)

TL;DR
This paper reports on deep hard X-ray surveys of three extragalactic fields using INTEGRAL/IBIS over 12 years, detecting 147 sources including many new AGN, and providing insights into their distribution and properties.
Contribution
It presents the first deep, multi-year hard X-ray survey of three specific extragalactic fields, identifying numerous sources and constructing AGN number-flux relations.
Findings
Detected 147 sources, including 37 new hard X-ray sources.
Constructed AGN logN-logS relations and calculated local AGN densities.
Achieved a survey sensitivity of 0.18 mCrab at 4σ.
Abstract
We present results of deep surveys of three extragalactic fields, M81 (exposure of 9.7 Ms), LMC (6.8 Ms) and 3C 273/Coma (9.3 Ms), in the hard X-ray (17-60 keV) energy band with the IBIS telescope onboard the INTEGRAL observatory, based on 12 years of observations (2003-2015). The combined survey reaches a peak sensitivity of 0.18 mCrab (2.610 erg s cm) and sensitivity better than 0.25 and 0.87 mCrab over 10% and 90% of its full area of 4900 deg, respectively. We have detected in total 147 sources at , including 37 sources observed in hard X-rays for the first time. The survey is dominated by extragalactic sources, mostly by active galactic nuclei (AGN). The sample of identified sources contains 98 AGN (including 64 Seyfert galaxies, 7 LINERs, 3 XBONGs, 16 blazars and 8 AGN of unclear optical class), two galaxy clusters (Coma…
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