English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Optical identification of active galactic nucleus candidates detected by the Mikhail Pavlinsky ART-XC telescope aboard the SRG observatory during the all-sky X-ray survey

Zaznobin, I. A., Uskov, G. S., Sazonov, S. Y., Burenin, R. A., Medvedev, P. S., Khorunzhev, G. A., et al. (2021). Optical identification of active galactic nucleus candidates detected by the Mikhail Pavlinsky ART-XC telescope aboard the SRG observatory during the all-sky X-ray survey. Astronomy Letters - a Journal of Astronomy and Space Astrophysics, 47(2), 71-87. doi:10.1134/S1063773721020067.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files
hide Files
:
Optical identification of active galactic nucleus candidates detected by the Mikhail Pavlinsky ART-XC telescope aboard the SRG observatory during the all-sky X-ray survey.pdf (Any fulltext), 3MB
 
File Permalink:
-
Name:
Optical identification of active galactic nucleus candidates detected by the Mikhail Pavlinsky ART-XC telescope aboard the SRG observatory during the all-sky X-ray survey.pdf
Description:
-
Visibility:
Private
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Zaznobin, I. A., Author
Uskov, G. S., Author
Sazonov, S. Yu., Author
Burenin, R. A., Author
Medvedev, P. S., Author
Khorunzhev, G. A., Author
Lyapin, A. R., Author
Krivonos, R. A., Author
Filippova, E. V., Author
Gilfanov, M. R.1, Author              
Sunyaev, R. A., Author
Eselevich, M. V., Author
Bikmaev, I. F., Author
Irtuganov, E. N., Author
A.Nikolaeva, E., Author
Affiliations:
1High Energy Astrophysics, MPI for Astrophysics, Max Planck Society, ou_159881              

Content

show
hide
Free keywords: -
 Abstract: We present the results of our identification of eight objects from the preliminary catalogue of X-ray sources detected in the 4–12 keV energy band by the Mikhail Pavlinsky ART-XC telescope onboard the SRG observatory during the first all-sky survey. Three of them (SRGA J005751.0+210846, SRGA J014157.0−032915, SRGA J232446.8+440756) have been discovered by the ART-XC telescope, while five have already been known previously as X-ray sources, but their nature has remained unestablished. The last five sources have also been detected in soft X-rays by the eROSITA telescope of the SRG observatory. Our optical observations have been carried out at the 1.6-m AZT-33IK telescope of the Sayan Observatory and the 1.5-m Russian–Turkish telescope (RTT-150). All of the investigated objects have turned out to be active galactic nuclei (AGNs) at redshifts from 0.019 to 0.283. Six of them are Seyfert 2 galaxies (including one Seyfert 1.9 galaxy), one (SRGA J005751.0+210846) is a ‘‘hidden’’ AGN (in an edge-on galaxy), and one (SRGA J224125.9+760343) is a narrow-line Seyfert 1 galaxy. The latter object is characterized by a high X-ray luminosity (∼(2−13)×1044 erg s−1 in the 4–12 keV band) and, according to our black hole mass estimate (∼2×107M), an accretion rate close to the Eddington limit. All three AGNs discovered by the ART-XC telescope (which are not detected by the eROSITA telescope) are characterized by a high absorption column density (NH≳3×1023 cm−2). The results obtained confirm the expectations that the ART-XC telescope is an efficient instrument in searching for heavily obscured and other interesting AGNs in the nearby (z≲0.3) Universe. The SRG sky survey will last for another 3 years or more, which must allow many such objects to be discovered.

Details

show
hide
Language(s): eng - English
 Dates: 2021-05-14
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1134/S1063773721020067
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Astronomy Letters - a Journal of Astronomy and Space Astrophysics
  Alternative Title : Astron. Lett.-J. Astron. Space Astrophys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 47 (2) Sequence Number: - Start / End Page: 71 - 87 Identifier: ISSN: 1063-7737
ISSN: 1562-6873