Identification of four X-ray sources from the INTEGRAL and Swift catalogs
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.
- Publication:
-
Astronomy Letters
- Pub Date:
- August 2013
- DOI:
- 10.1134/S1063773713080069
- arXiv:
- arXiv:1307.2761
- Bibcode:
- 2013AstL...39..513L
- Keywords:
-
- X-ray sources;
- active galactic nuclei;
- X-ray binaries;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- 11 pages, 6 figures, will be publihsed in Astronomy Letters, V.39, N8, pp.513-522