Gas-poor clusters: what kind of beasts are they?

The known variety of galaxy clusters is constantly increasing with our
progress in understanding the severity of selection effects on observational
samples and with obvious implications on cosmology and cluster physics. In the
talk, after a general introduction on galaxy clusters and a reminder on
selection effects, I present perhaps the first X-ray unbiased sample of
clusters with known masses and X-ray follow-up, its more variegate nature
compared to clusters selected by the intracluster medium (X-ray or SZ), and
first results based on a deeper X-ray follow-up of a few of them.


22/04/2021 - 12:30
Dr. Stefano Andreon
INAF-OA Brera (Milan, Italy)