astrobites | 2017 Mar 09
Gourav Khullar wrote:
We have come a long way since the 1930s, when the words ‘galaxy cluster‘ were posited for the first time by Fritz Zwicky, in relation with the presence of dark matter in the Coma cluster. Developments in multi-wavelength astrophysics have allowed us to probe different components of a cluster with different telescopes. For example, star-forming galaxies of galaxy clusters are observed using optical telescopes because starlight in these galaxies loves emitting photons with the roughly the same energy that we see from the sun. Some of these galaxies are super-red, have no star-formation and a ton of dust, that is best seen from infra-red and radio telescopes. Today’s story takes us to the intermittent space between different galaxies inside a cluster, called the intra-cluster medium (ICM) and its emissions. ...
The Remarkable Similarity of Massive Galaxy Clusters from z~0 to z~1.9 - Michael McDonald et al
- arXiv.org > astro-ph > arXiv:1702.05094 > 16 Feb 2017