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HUNDRED THOUSAND DEGREE GAS IN THE VIRGO CLUSTER OF GALAXIES
2012
Astrophysical Journal Letters
The physical relationship between low-excitation gas filaments at ~10^4 K, seen in optical line emission, and diffuse X-ray emitting coronal gas at ~10^7 K in the centers of many galaxy clusters is not understood. It is unclear whether the ~10^4 K filaments have cooled and condensed from the ambient hot (~10^7 K) medium or have some other origin such as the infall of cold gas in a merger, or the disturbance of an internal cool reservoir of gas by nuclear activity. Observations of gas at
doi:10.1088/2041-8205/750/1/l5
fatcat:r7xfgbv5u5bntfyuf2ipptrp24