X-ray astrophysics and cosmology

X-ray astrophysics and cosmology

Andrzej Sołtan

First, astrophysical applications of X-ray technics are briefly presented. Then, essential X-ray investigations directly relevant to cosmology, viz. detection of hot intracluster and intergalactic gas are described. The role of the X-ray observations in investigation of supermassive black holes is characterized.