Astrophysics Seminars

The membrane paradigm gives an alternate description of black hole physics, in which the black hole is replaced by a fluid membrane living on the horizon. In asymptotically flat spacetimes, the boundary at null infinity also has a membrane...

Neutron stars live interesting and mysterious lives: from the moment they are created in core-collapse supernovae, to the moment some of them collapse to black-holes. In this talk, I will cover some aspects of their lives. I will discuss their birth...

I will discuss several problems in (exo)planetary dynamics, all involving somewhat surprising behaviors of vectors tugging one another. (1) Binary-disk-star interaction leading to the formation of misaligned protoplanetary disks; (2) Gentle...

This talk explains the formation of galaxies of different morphological types (aka the Hubble Sequence): spirals vs ellipticals, disks vs spheroids. The talk includes theory, observation, and simulation, and is aimed at a general astrophysics...

NO MEETING TODAY

NOTE TALK TIME - DIFFERENT THAN USUAL.

NOTE TIME CHANGEThe historic first detection of a gravitational waves from merging black holes came with an unexpected windfall: the first observation of a black hole ringdown. The ringdown of a black hole through damped ``quasinormal'' oscillation...

NO TALK TODAY.

NO TALK TODAY