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The hidden circumgalactic medium

Published onMay 31, 2019
The hidden circumgalactic medium


The properties of the CGM are directly linked to the baryon cycle. Although traditionally the CGM should consist of warm/hot gas, recent breakthroughs suggest that a significant mass resides in a cold phase, which is filtered out by interferometers. The only way to probe such cold CGM is through a large (e.g. 50-m) single dish (sub-)mm telescope.

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