SRG/ART-XC all-sky X-ray survey: Catalog of sources detected during the first year

被引：24

作者：

Pavlinsky, M. ^{[1
]}

Sazonov, S. ^{[1
]}

Burenin, R. ^{[1
]}

Filippova, E. ^{[1
]}

Krivonos, R. ^{[1
]}

Arefiev, V ^{[1
]}

Buntov, M. ^{[1
]}

Chen, C-T ^{[2
]}

Ehlert, S. ^{[3
]}

Lapshov, I ^{[1
]}

Levin, V ^{[1
]}

Lutovinov, A. ^{[1
]}

Lyapin, A. ^{[1
]}

Mereminskiy, I ^{[1
]}

Molkov, S. ^{[1
]}

Ramsey, B. D. ^{[3
]}

Semena, A. ^{[1
]}

Semena, N. ^{[1
]}

Shtykovsky, A. ^{[1
]}

Sunyaev, R. ^{[1
]}

Tkachenko, A. ^{[1
]}

Swartz, D. A. ^{[2
]}

Vikhlinin, A. ^{[1
,4
]}

机构：

[1] Space Res Inst, 84-32 Profsouznaya Str, Moscow 117997, Russia

[2] Univ Space Res Assoc, Huntsville, AL 35805 USA

[3] NASA, Marshall Space Flight Ctr, Huntsville, AL 35812 USA

[4] Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2022年 / 661卷

基金：

俄罗斯科学基金会;

关键词：

surveys; catalogs; X-rays: general; NEWTON SLEW SURVEY; ART-XC; NUSTAR OBSERVATIONS; BLAZAR CANDIDATES; OPTICAL-IDENTIFICATION; CATACLYSMIC BINARIES; INTEGRAL SOURCES; SPECTRUM; RADIO; TELESCOPE;

D O I：

10.1051/0004-6361/202141770

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a first catalog of sources detected by the Mikhail Pavlinsky ART-XC telescope on board the SRG observatory in the 4-12 keV energy band during its ongoing all-sky survey. The catalog comprises 867 sources detected on the combined map of the first two 6-month scans of the sky (December 2019-December 2020), ART-XC sky surveys 1 and 2, or ARTSS12. The achieved sensitivity to point sources varies between similar to 4 x 10(-12) erg s(-1) cm(-2) near the ecliptic plane and -8 x 10(-13) erg s(-1) cm(-2) (4-12 keV) near the ecliptic poles, and the typical localization accuracy is similar to 15 ''. Of the 750 sources of known or suspected origin in the catalog, 56% are extragalactic (mostly active galactic nuclei, AGN; and clusters of galaxies) and the rest are Galactic (mostly cataclysmic variables, CVs; and low- and high-mass X-ray binaries). For 114 sources, ART-XC has detected X-rays for the first time. Although the majority of these (similar to 80) are expected to be spurious (given the adopted detection threshold), there can be a significant number of newly discovered astrophysical objects. We have started a program of optical follow-up observations of the new and previously unidentified X-ray sources, which has already led to the identification of several AGN and CVs. With the SRG all-sky survey planned to continue for a total of four years, we can expect the ART-XC survey in the 4-12 keV band to significantly surpass previous surveys that were carried out in similar (medium X-ray) energy bands in terms of the combination of angular resolution, sensitivity, and sky coverage.

引用

页数：18

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