Astrophysics Seminars

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...

Irradiation, bloating, bad circulation, hot flashes, cyclic mass loss. Pulsar radiation has been observed to do many suprising things to nearby companion stars ("black widows" and "redbacks"), posing several long-standing theoretical puzzles for...

Our current understanding of how galaxies evolve over cosmic time is highly incomplete without understanding what is now known as the major baryonic component: the Circumgalactic medium (CGM). The CGM contains both the fuel for and the end products...

Gyrochronology utilizes the spin-down of stars as a function of time as an indicator of stellar age. This technique has the potential to yield precise ages for large samples of stars, providing unprecedented chronological information for studies of...