Astrophysics Seminars

Jan
29
2009

Institute for Advanced Study Informal Astrophysics Seminar

High Lorentz Factors and Periodic Components of Variability in Blazars
11:30am|Bloomberg Hall Astrophysics Library
There is a great deal of evidence that the defining characteristics of blazars, such as extreme variability across the electromagnetic spectrum and high fractional polarization, are produced by shocks in relativistic jets pointing close our line of...
Jan
27
2009

Institute for Advanced Study Astrophysics Seminar

The Roles of 'Theory' and 'Models' in Understanding the Earth's Climate and Other Complex Systems
Geoffrey Vallis
11:00am|Bloomberg Hall Astrophysics Library
Many of the natural systems we seek to understand are very complex; the Earth's climate and some biological and astrophysical systems are prime examples. Large numerical models have become increasingly powerful tools in that quest, but there can be...
Dec
11
2008

Institute for Advanced Study Informal Astrophysics Seminar

Numerical Experiments in Core-Collapse Supernova Hydrodynamics
11:30am|Bloomberg Hall Astrophysics Library
The explosion of massive stars involves the formation of a shock wave. In stars that form iron cores, this shock wave stalls on its way out due to the breakup of heavy nuclei and neutrino emission. In the currently most favored explosion scenario, a...