Hamsa tells us about how baryonic gases arrange themselves inside galaxies, specifically in the context of the HI halo model (with some deviation to discuss other gases like molecular hydrogen and carbon monoxide).
This is a great talk in its own right, full of really useful information for cosmologists who want to know how intensity mapping, etc, will be used for cosmology – but, it also acts as a good companion talk to Jurek Bauer’s talk on constraining axion dark matter using intensity mapping (https://youtu.be/bMlrDOWw978). Hamsa was a coauthor on Jurek’s paper and the expert in that collaboration on the HI/intensity mapping part.
This video builds up to eventually being about this paper, https://arxiv.org/abs/2002.01489, however in getting there it covers the whole background of modelling HI and other baryonic gases within galaxies in an information packed, but accessible way.
Cosmology Talks 