Astrophysics Seminars

Planets form from the coldest and densest parts of circumstellar disks around young stars. During this phase, the active nature of the star subjects the disk to relatively high fluxes of UV and X-ray photons and energetic particles. Simultaneously...

Galactic nuclei and the Massive black holes (MBHs) in their centers are rich environments, where the complex stellar dynamics plays an important role in many physical phenomena. We show that the standard description of the two-body relaxation...

The field of type Ia supernova (SN Ia) explosion physics is in a crisis. Decades of theoretical researches fail to demonstrate that successful explosions can be convincingly achieved from the popular single degenerate and double degenerate merger...

If LCDM is correct, then all dark matter halos hosting galaxies, from those hosting dwarfs to those hosting giant clusters, are filled with abundant substructure down to very low mass scales ( 10^9 Msun). Specifically, even the dark matter halos of...

Exoplanets orbiting close to their parent star are bombarded by intense radiation which heats and ionizes the upper atmosphere. This is thought to create an extended atmosphere of gas which may be probed spectroscopically during transits of the host...