170 research outputs found
Optical Identifications of Five INTEGRAL Hard X-ray Sources in the Galactic Plane Region
The results of optical identifications of five hard X-ray sources in the
Galactic plane region from the INTEGRAL all-sky survey are presented. The X-ray
data on one source (IGRJ20216+4359) are published for the first time. The
optical observations were performed with 1.5-m RTT-150 telescope (TUBITAK
National Observatory, Antalya, Turkey) and 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.Comment: 7 pages, 10 figures, Astronomy Letters, v. 34, p. 65
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