Speaker
Description
Gamma Ray Bursts (GRBs) and Super Luminous Supernovae (SLSNe) are the brightest explosions in the Universe, originating in the core-collapse of massive stars, located in hearts of star-forming regions. Although the link between GRBs/SLSNe and massive stars is well established, the physical conditions for the formation of their progenitors remain speculative. A likely hypothesis is that they form in regions with high star formation rate density and high gas surface density. I will describe our ongoing survey of atomic and molecular gas in $z < 0.1$ GRB and SLSN host galaxies. This survey was designed to test the hypothesis mentioned above and to also investigate the structure of atomic and molecular gas in the close environment of these energetic events. I will in particular focus on three galaxies studied based on GMRT and ALMA observations. Our findings in three cases support the likely connection between massive star explosions and dense environments. Such a connection being commonplace would put strong constrains on the channels for the formation of bright explosions of massive stars.
