A mosaic of the Coma cluster of galaxies with XMM-Newton

被引：58
|
作者：
Briel, UG [1 ]
Henry, JP
Lumb, DH
Arnaud, M
Neumann, D
Aghanim, N
Gastaud, R
Mittaz, JPD
Sasseen, TP
Vestrand, WT
机构：
[1] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany
[2] Astron Inst, Honolulu, HI 96822 USA
[3] European Space Agcy, ESTEC, XMM Sci Operat Ctr, Div Space Sci, NL-2200 AG Noordwijk, Netherlands
[4] CEA Saclay, DSM, DAPNIA, Serv Astrophys, F-91191 Gif Sur Yvette, France
[5] Univ Paris 11, IAS, CNRS, F-91405 Orsay, France
[6] Mullard Space Sci Lab, Surrey RH6 6NT, England
[7] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
[8] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
来源：
ASTRONOMY & ASTROPHYSICS | 2001年 / 365卷 / 01期
关键词：
coma; cluster of galaxies; intergalactic medium; large-scale structure of the Universe; X-rays;
D O I：
10.1051/0004-6361:20000024
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Coma cluster of galaxies was observed with XMM-Newton in 12 partially overlapping pointings. We present here the resulting X-ray map in different energy bands and discuss the large scale structure of this cluster. Many point sources were found throughout the observed area, at least 11 of them are coincident with bright galaxies. We also give a hardness ratio map at the so far highest angular resolution obtained for a cluster of galaxies. In this map we found soft regions at the position of bright galaxies, little variation in the central 15 arcmin, but some harder regions north of the line NGC 4874 - NGC 4889.
引用
收藏
页码：L60 / L66
页数：7
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