A deep Chandra observation of the Centaurus cluster:: bubbles, filaments and edges

被引:91
作者
Fabian, AC
Sanders, JS
Taylor, GB
Allen, SW
机构
[1] Inst Astron, Cambridge CB3 0HA, England
[2] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA
[3] Natl Radio Astron Observ, Socorro, NM 87801 USA
关键词
galaxies : clusters : individual : Centaurus; intergalactic medium; X-rays : galaxies;
D O I
10.1111/j.1745-3933.2005.00037.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
X-ray images and gas temperatures taken from a deep approximate to 200-ks Chandra observation of the Centaurus cluster are presented. Multiple inner bubbles and outer semicircular edges are revealed, together with wispy filaments of soft X-ray emitting gas. The frothy central structure and eastern edge are likely due to the central radio source blowing bubbles in the intracluster gas. The semicircular edges to the surface brightness maps 32 kpc to the east and 17.5 kpc to the west are marked by sharp temperature increases and abundance drops. The edges could be due to sloshing motions of the central potential, or are possibly enhanced by earlier radio activity. The high abundance of the innermost gas (about 2.5 times solar) limits the amount of diffusion and mixing taking place.
引用
收藏
页码:L20 / L24
页数:5
相关论文
共 29 条
[1]   A ROSAT PSPC INVESTIGATION OF THE CENTAURUS CLUSTER OF GALAXIES [J].
ALLEN, SW ;
FABIAN, AC .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1994, 269 (02) :409-426
[2]   ASCA and ROSAT observations of nearby cluster cooling flows [J].
Allen, SW ;
Fabian, AC ;
Johnstone, RM ;
Arnaud, KA ;
Nulsen, PEJ .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2001, 322 (03) :589-613
[3]   ABUNDANCES OF THE ELEMENTS - METEORITIC AND SOLAR [J].
ANDERS, E ;
GREVESSE, N .
GEOCHIMICA ET COSMOCHIMICA ACTA, 1989, 53 (01) :197-214
[4]   Evidence for merging in the Centaurus cluster [J].
Churazov, E ;
Gilfanov, H ;
Forman, W ;
Jones, C .
ASTROPHYSICAL JOURNAL, 1999, 520 (01) :105-110
[5]   The complex cooling core of A2029: Radio and X-ray interactions [J].
Clarke, TE ;
Blanton, EL ;
Sarazin, CL .
ASTROPHYSICAL JOURNAL, 2004, 616 (01) :178-191
[6]   THE CENTAURUS CLUSTER OF GALAXIES .1. THE DATA [J].
DICKENS, RJ ;
CURRIE, MJ ;
LUCEY, JR .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1986, 220 (03) :679-711
[7]   Chandra analysis of A496:: No chemical gradients across cold fronts [J].
Dupke, R ;
White, RE .
ASTROPHYSICAL JOURNAL, 2003, 583 (01) :L13-L16
[8]   Detection of bulk motions in the intracluster medium of the Centaurus cluster [J].
Dupke, RA ;
Bregman, JN .
ASTROPHYSICAL JOURNAL, 2001, 562 (01) :266-278
[9]   A deep Chandra observation of the Perseus cluster:: shocks and ripples [J].
Fabian, AC ;
Sanders, JS ;
Allen, SW ;
Crawford, CS ;
Iwasawa, K ;
Johnstone, RM ;
Schmidt, RW ;
Taylor, GB .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 344 (03) :L43-U2
[10]   The properties of the X-ray holes in the intracluster medium of the Perseus cluster [J].
Fabian, AC ;
Celotti, A ;
Blundell, KM ;
Kassim, NE ;
Perley, RA .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2002, 331 (02) :369-375