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

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

2005-03-07

arxiv.org/abs/astro-ph/0503154v1

Astronomy and Astrophysics

Astrophysics

5 pages, 8 figures, accepted for publication in MNRAS Letters

Scientific paper

10.1111/j.1745-3933.2005.00037.x

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 32kpc to the east and 17.5kpc 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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