The circumgalactic and intergalactic media may contain the majority of baryonic matter in the universe, but their low density makes them extremely faint. Can an instrument designed to image low surface brightness objects help shed light on these ghostly structures?
Outreach extraordinaire, Lawrence Rudnick, employs both radio and x-rays to investigate the dynamics of the intercluster medium. Be sure to read this interview before his plenary talk at #AAS231 on Wednesday!
What provided heat to the IGM prior to reionization? X-rays have been the favorite, but today we explore cosmic rays as a source.
The biggest and the brightest Lyα nebula is discovered! What can we learn from this giant?
Observations of dwarf galaxies show that sites of active star formation have fewer metals. These galaxies may have been diluted by the impact of pristine gas from the cosmic web.
Gamma-ray bursts are the most energetic explosions in the Universe. Today, we discuss how to use one GRB as a beacon to study the properties of a high redshift galaxy, the composition of the gas in the intergalactic medium at high redshift and the formation of dust in the Universe.