Astrophysics Seminars

Oct
01
2009

Institute for Advanced Study Informal Astrophysics Seminar

Modeling the Flyby Anomalies with Dark Matter Scattering
Stephen Adler
11:30am|Bloomberg Hall Astrophysics Library
We continue our exploration of whether the flyby anomalies can be explained by scattering of spacecraft nucleons from dark matter gravitationally bound to the earth. We formulate and analyze a simple model in which inelastic and elastic scatterers...
Sep
24
2009

Institute for Advanced Study Informal Astrophysics Seminar

Connecting Galaxies, Halos, and Star Formation Rates Across Cosmic Time
Risa Wechsler
11:30am|Bloomberg Hall Astrophysics Library
Recent observational and theoretical studies indicate that galaxy luminosities and stellar masses are tightly correlated with the masses of their dark matter halo hosts. This allows one to infer the connection between galaxies and their associated...
Sep
17
2009

Institute for Advanced Study Informal Astrophysics Seminar

Refining Photometric Redshift Distributions with Cross-correlations
Alexia Schulz
11:30am|Bloomberg Hall Astrophysics Library
The weak gravitational lensing of source galaxies divided into several redshift slices (tomography) is known to be a powerful cosmological probe that can be used to study the three dimensional distribution of dark matter, the nature of dark energy...