Seventeenth Marcel Grossmann Meeting

The Baryonic Mass Estimates of the Milky Way Halo in the form of High Velocity Clouds

9 Jul 2024, 18:05

20m

Riserva (Aurum)

Talk in a parallel session Dark matter halos: its nature, modeling & tracers Dark matter halos: its nature, modeling & tracers

Speaker

Dr Noraiz Tahir (Department of Physics, School of Natural Sciences (SNS), National University of Science and Technology (NUST), H12, Islamabad, Pakistan)

Description

The halo of our Galaxy is populated with a significant number of high-velocity clouds (HVCs) moving with a speed up to $500$ km/s. It is suggested that these HVCs might contain a non-negligible fraction of the missing baryons. We aim to estimate the baryonic mass of the Milky Way halo in the form of HVCs to constrain a fraction of missing baryons in the form of these clouds. Such findings would substantially help in studying our Galaxy's halo dynamics. Here we summarise our estimates on the baryonic mass of the Milky Way halo in HVCs. We estimate that the total mass of the Milky Way halo resulted to be $\sim (7\pm 2)\times {10}^9{M}_{\odot }$ in the form of HVCs and compact high-velocity clouds (CHVCs).

Presentation materials

MG17 DM3 Session TAHIR.pptx