Astrophysics Seminars

Understanding physical processes responsible for the formation and evolution of galaxies like the Milky Way is a fundamental problem. However, a key challenge is that the properties and orbits of the stars can only be observed at present: to...

The circumgalactic medium contains the fuel for future star formation and the record of past feedback, making it uniquely sensitive to the physics of baryonic flows---one of the principal missing ingredients in our understanding of galaxy evolution...

Besides discovering thousands of planetary systems orbiting other stars, one of the legacies of NASA's Kepler mission is the discovery of new planetary architectures. Systems of up to seven planets have been found with orbital periods near integer...

There is an enormous amount of information stored in the positions, velocities and chemistry of resolved stellar populations in the Milky Way. A comprehensive theory of galaxy formation can only be formed through the complementary information...

Astrophysical discs often deviate from the circular, planar forms assumed in classical accretion-disc theory. Gravitational interaction with orbital companions can cause discs to become elliptical, warped and tidally deformed. In this talk I will...

The scale and scope of astronomical transient discoveries has accelerated tremendously over the past two decades. However, despite the collection of vast quantities of data and the development of novel theories, many of the biggest problems in our...

The electromagnetic radiation observed following the neutron star (NS) merger event, that was recently detected by LIGO, provide constraints on the properties of the material ejected during the merger process. These constraints will be discussed in...

All-Sky Automated Survey for Supernovae (ASAS-SN) scans the entire visible sky at daily cadence to search for bright transients, especially supernovae. Over the last few years, ASAS-SN has been the most productive survey at finding bright supernovae...

Studies of the cosmic microwave background (CMB) radiation have driven the current era of precision cosmology. The tightest cosmological constraints to date have been derived from the primary CMB anisotropies, which predominantly probe the universe...