Diffuse extreme-ultraviolet emission from the Coma cluster: Evidence for rapidly cooling gases at submegakelvin temperatures

Richard Lieu, Jonathan P.D. Mittaz, Stuart Bowyer, Jeffrey O. Breen, Felix J. Lockman, Edward M. Murphy, Chorng Yuan Hwang

Research output: Contribution to journalArticlepeer-review

113 Scopus citations

Abstract

The central region of the Coma cluster of galaxies was observed in the energy band from 0.065 to 0.245 kiloelectron volts by the Deep Survey telescope aboard the Extreme Ultraviolet Explorer. A diffuse emission halo of angular diameter ~30 arc minutes was detected. The extreme-ultraviolet (EUV) emission level exceeds that expected from the x-ray temperature gas in Coma. This hale suggests the presence of two more phases in the emitting gas, one at a temperature of ~2 x 106 kelvin and the other at ~8 x 105 kelvin. The letter phase cools rapidly and, in steady state, would have produced cold matter with a mass of ~1014 solar masses within the EUV halo. Although a similar EUV enhancement was discovered in the Virgo cluster, this detection in Coma applies to a noncooling flow system.

Original languageEnglish
Pages (from-to)1335-1338
Number of pages4
JournalScience
Volume274
Issue number5291
DOIs
StatePublished - 22 Nov 1996

Fingerprint

Dive into the research topics of 'Diffuse extreme-ultraviolet emission from the Coma cluster: Evidence for rapidly cooling gases at submegakelvin temperatures'. Together they form a unique fingerprint.

Cite this