Host Galaxies of Cosmic Gamma-Ray Bursts

The discovery of gamma-ray burst (GRB) host galaxy back in 1997 brought confirmation of GRBs cosmological origin. Nowadays investigation of the host galaxies often is the only way to estimate the cosmological redshift of GRB sources. The morphology of host galaxies gives clues to the nature of the environment, where the GRBs were born, and allows estimating physical parameters of the circumburst medium. The number of GRB host galaxies with known redshift is still insufficient for large statistical analysis and adding to a sample GRB hosts a few more is important. We present methods of GRB host investigations, results of a modeling of GRB host galaxies from IKI GRB-FuN database and discuss the results in a framework of known host galaxies. Increasing the statistics of GRB host galaxies including short duration GRBs will be helpful in the process of selection of target galaxies in search for counterparts of gravitational wave events in next runs of LIGO/Virgo/KAGRA.