An XMM-Newton study of the sub-structure in M 87's halo

被引：62

作者：

Belsole, E

Sauvageot, JL

Böhringer, H

Worrall, DM

Matsushita, K

Mushotzky, RF

Sakelliou, I

Molendi, S

Ehle, M

Kennea, J

Stewart, G

Vestrand, WT

机构：

[1] CEA Saclay, Serv Astrophys, F-91191 Gif Sur Yvette, France

[2] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[3] Univ Bristol, Dept Phys, Bristol BS8 1TL, Avon, England

[4] NASA, Goddard Space Flight Ctr, High Energy Astrophys Lab, Greenbelt, MD 20771 USA

[5] UCL, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England

[6] Ist Fis Cosmica, I-20133 Milan, Italy

[7] XMM Newton SOC, Madrid 28080, Spain

[8] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[9] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

[10] Los Alamos Natl Lab, NIS2, Los Alamos, NM 87545 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2001年 / 365卷 / 01期

关键词：

galaxies : clusters : individual : Virgo; galaxies : individual : M 87; radio continuum : galaxies; radio galaxies : individual : 3C 274; X-rays : galaxies;

D O I：

10.1051/0004-6361:20000239

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The high signal to noise and good point spread function of XMM have allowed the first detailed study of the interaction between the thermal and radio emitting plasma in the central regions of M 87. We show that the X-ray emitting structure, previously seen by ROSAT, is thermal in nature and that the east and southwest extensions in M 87's X-ray; halo have a significantly lower temperature (kT = 1.5 keV) than the surrounding ambient medium (kT = 2.3 keV). There is little or no evidence for non-thermal emission with an upper limit on the contribution of a power law component of spectral index flatter than 3 being less than 1% of the flux iu the region of the radio lobes.

引用

页码：L188 / L194

页数：7

共 26 条

[1] Measuring cluster temperature profiles with XMM/EPIC [J].