Zooming in on the Coma Cluster with Chandra: Compressed Warm Gas in the Brightest Cluster Galaxies

Details Zooming in on the Coma Cluster with Chandra: Compressed Warm Gas in the Brightest Cluster Galaxies Zooming in on the Coma Cluster with Chandra: Compressed Warm Gas in the Brightest Cluster Galaxies

2001-02-28

arxiv.org/abs/astro-ph/0102483v2

Astronomy and Astrophysics

Astrophysics

Accepted to ApJ Letters. 4 pages, 4 figures, uses emulateapj5. Several typos in the original version are fixed

Scientific paper

10.1086/323181

The Chandra image of the central region of the Coma cluster reveals that both its dominant galaxies, NGC4874 and NGC4889, retain the central parts of their X-ray gas coronae. The interstellar gas with a temperature of 1-2 keV is confined by the hot intergalactic medium of the Coma cluster into compact clouds (only 3 kpc in radius) containing 10^8 M_sun of gas. The physical state of the gas in these clouds appears to be determined by a delicate balance between radiative cooling and suppressed (by a factor of 30-100) heat conduction through the interface between these clouds and the hot cluster gas.

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