Identification of 8 INTEGRAL hard X-ray sources with Chandra

被引：37

作者：

Sazonov, S

Churazov, E

Revnivtsev, M

Vikhlinin, A

Sunyaev, R

机构：

[1] Max Planck Inst Astrophys, D-85740 Garching, Germany

[2] Russian Acad Sci, Space Res Inst, Moscow 117997, Russia

[3] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2005年 / 444卷 / 02期

关键词：

surveys; galaxies : Seyfert; X-rays : general;

D O I：

10.1051/0004-6361:200500205

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the results of identification of 8 hard X-ray sources discovered by the INTEGRAL observatory during the ongoing all-sky survey. These sources have been observed by Chandra. In 6 cases a bright X-ray source was found within the INTEGRAL localization region, which permitted to unambiguously identify 5 of the objects with nearby galaxies, implying that they have an active galactic nucleus (AGN), whereas have one source is likely an X-ray binary in LMC. 4 of the 5 newly discovered AGNs have measured redshifts in the range 0.025-0.055. The X-ray spectra reveal the presence of significant amounts of absorbing gas (N-H in the range 10(22)-10(24) cm cm(-2)) in all 5 AGNs, demonstrating that INTEGRAL is starting to fill in the sample of nearby obscured AGNs.

引用

页码：L37 / L40

页数：4

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