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Title:
New hard X-ray sources discovered in the ongoing INTEGRAL Galactic plane survey after 14 yr of observations
Authors:
Krivonos, Roman A.; Tsygankov, Sergey S.; Mereminskiy, Ilya A.; Lutovinov, Alexander A.; Sazonov, Sergey Yu.; Sunyaev, Rashid A.
Affiliation:
AA(Space Research Institute of the Russian Academy of Sciences, Profsoyuznaya Str. 84/32, 117997 Moscow, Russia 0000-0003-2737-5673), AB(Space Research Institute of the Russian Academy of Sciences, Profsoyuznaya Str. 84/32, 117997 Moscow, Russia; Tuorla Observatory, Department of Physics and Astronomy, University of Turku, Väisäläntie 20, FI-21500 Piikkiö, Finland), AC(Space Research Institute of the Russian Academy of Sciences, Profsoyuznaya Str. 84/32, 117997 Moscow, Russia), AD(Space Research Institute of the Russian Academy of Sciences, Profsoyuznaya Str. 84/32, 117997 Moscow, Russia; Moscow Institute of Physics and Technology, Institutsky per. 9, 141700 Dolgoprudny, Russia), AE(Space Research Institute of the Russian Academy of Sciences, Profsoyuznaya Str. 84/32, 117997 Moscow, Russia; Moscow Institute of Physics and Technology, Institutsky per. 9, 141700 Dolgoprudny, Russia), AF(Space Research Institute of the Russian Academy of Sciences, Profsoyuznaya Str. 84/32, 117997 Moscow, Russia; MPI für Astrophysik, Karl-Schwarzschild str. 1, D-85741 Garching, Germany)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 470, Issue 1, p.512-516 (MNRAS Homepage)
Publication Date:
09/2017
Origin:
CROSSREF; OUP
Astronomy Keywords:
surveys - X-rays: general
Abstract Copyright:
2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
DOI:
10.1093/mnras/stx1276
Bibliographic Code:
2017MNRAS.470..512K

Abstract

The International Gamma-Ray Astrophysics Laboratory (INTEGRAL) continues to successfully work in orbit after its launch in 2002. The mission provides the deepest ever survey of hard X-ray sources throughout the Galaxy at energies above 20 keV. We report on a catalogue of new hard X-ray source candidates based on the latest sky maps comprising 14 yr of data acquired with the IBIS telescope onboard INTEGRAL in the Galactic Plane (|b| < 17.5°). The current catalogue includes in total 72 hard X-ray sources detected at S/N > 4.7sigma and not known to previous INTEGRAL surveys. Among them, 31 objects have also been detected in the on-going all-sky survey by the BAT telescope of the Swift observatory. For 26 sources on the list, we suggest possible identifications: 21 active galactic nuclei, two cataclysmic variables, two isolated pulsars or pulsar wind nebulae and one supernova remnant; 46 sources from the catalogue remain unclassified.
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