Seminar by Rahna Payyasseri Thanduparackal

Abstract

The Circumgalactic Medium (CGM) is the gas surrounding galaxies outside their disks and within their virial radii. Lyman-alpha (Lyα) emission is one of the most important spectral features for probing the CGM at high redshifts, providing crucial insights into the formation and evolution of galaxies and their environments in the early Universe. I will present a study of extended Lyα emission around quasars at z>2 using the capabilities of the J-PAS survey, and highlight our recent discovery of a massive Lyα nebula.