Astrophysics Seminars

Planets are formed out of sub-micrometer sized solid particles that orbit young stars in their accretion disks. The growth of these particles, their transport, and the structure and dynamics of the gaseous accretion disk are tightly interlinked...

The universe is teeming with very high energy gamma ray sources (> 100 GeV), but it is generally thought that their impact on the universe is minor at best. On energetic grounds, this assumption seems well-founded because the energy density in TeV...

The relationship between large-scale structure and the intrinsic shapes of galaxies is an important element of observational cosmology. These "intrinsic alignments" (IA) are the most significant source of astrophysical uncertainty in weak lensing...

The relationship between large-scale structure and the intrinsic shapes of galaxies is an important element of observational cosmology. These "intrinsic alignments" (IA) are the most significant source of astrophysical uncertainty in weak lensing...

The Epoch of Reionization (EoR) marks when the first stars ionized the primordial hydrogen half a billion years after the big bang. Direct observation of cosmological hydrogen is possible via the 21cm line and is now being hotly pursued as a new...