|
|||||
|
|
Identification of four X-ray sources from the INTEGRAL and Swift catalogs |
|
| Authors: | A A Lutovinov A I Mironov R A Burenin M G Revnivtsev S S Tsygankov M N Pavlinsky I V Korobtsev M V Eselevich |
| Institution: | 1. Space Research Institute, Russian Academy of Sciences, Profsoyuznaya ul. 84/32, Moscow, 117997, Russia 2. Moscow Institute of Physics and Technology, Dolgoprudnyi, Moscow obl., 141700, Russia 3. Finnish Centre for Astronomy with ESO (FINCA), University of Turku, Piikki?, Finland 4. Astronomy Division, Department of Physics, University of Oulu, Oulu, Finland 5. Institute for Solar-Terrestrial Physics, Russian Academy of Sciences, Siberian Branch, P.O. Box 4026, Irkutsk, 664033, Russia |
| Abstract: | Four hard X-ray sources from the INTEGRAL and Swift catalogs have been identified. X-ray and optical spectra have been obtained for each of the objects being studied by using data from the INTEGRAL, Swift, ROSAT, and Chandra X-ray observatories as well as observations with the RTT-150 and AZT-33IK optical telescopes. Two sources (SWIFT J1553.6+2606 and SWIFT J1852.2+8424) are shown to be extragalactic in nature: the first is a quasar, while the recordedX-ray flux from the second is the total emission from two Seyfert 1 galaxies at redshifts 0.1828 and 0.2249. The source IGR J22534+6243 resides in our Galaxy and is an X-ray pulsar with a period of ～46.674 s that is a member of a high-mass X-ray binary with a Be star. The nature of yet another Galactic source, SWIFT J1852.8+3002, is not completely clear and infrared spectroscopy is needed to establish it. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |