Optical identifications of five INTEGRAL hard X-ray sources in the Galactic plane |
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| Authors: | I F Bikmaev R A Burenin M G Revnivtsev S Yu Sazonov R A Sunyaev M N Pavlinsky N A Sakhibullin |
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| Affiliation: | (1) Kazan State University, ul. Kremlevskaya 18, Kazan, Russia;(2) Academy of Sciences of Tatarstan, ul. Baumana, 20, Kazan, Russia;(3) Space Research Institute, ul. Profsoyuznaya 84/32, Moscow, 117997, Russia;(4) Max-Planck Institut für Astrophysik, Karl-Schwarzschild-Str. 1, Garching, 85741, Germany |
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| Abstract: | The results of optical identifications of five hard X-ray sources in the Galactic plane from the INTEGRAL all-sky survey are presented. The X-ray data on one source (IGR J20216+4359) are published for the first time. The optical observations were performed with the 1.5-m RTT-150 telescope (Turkish National Observatory, Antalya, Turkey) and the 6-m BTA telescope (Special Astrophysical Observatory, Nizhny Arkhyz, Russia). A blazar, three Seyfert galaxies, and a high-mass X-ray binary are among the identified sources. |
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| Keywords: | X-ray sources gamma-ray sources active galactic nuclei X-ray binaries optical observations |
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