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Title:
A deep Chandra observation of the Centaurus cluster: bubbles, filaments and edges
Authors:
Fabian, A. C.; Sanders, J. S.; Taylor, G. B.; Allen, S. W.
Affiliation:
AA(Institute of Astronomy, Madingley Road, Cambridge CB3 0HA), AB(Institute of Astronomy, Madingley Road, Cambridge CB3 0HA), AC(Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305-4060, USA; National Radio Astronomy Observatory, Socorro, NM 87801, USA), AD(Institute of Astronomy, Madingley Road, Cambridge CB3 0HA; Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305-4060, USA)
Publication:
Monthly Notices of the Royal Astronomical Society: Letters, Volume 360, Issue 1, pp. L20-L24. (MNRAS Homepage)
Publication Date:
06/2005
Origin:
MNRAS
MNRAS Keywords:
galaxies: clusters: individual: Centaurus, intergalactic medium, X-rays: galaxies
DOI:
10.1111/j.1745-3933.2005.00037.x
Bibliographic Code:
2005MNRAS.360L..20F

Abstract

X-ray images and gas temperatures taken from a deep ~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.

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