Astrophysics Seminars

Jun
02
2011

Institute for Advanced Study Informal Astrophysics Seminar

Satellite Supported Estimates of Human Rate of NPP Carbon Use on Land: Challenges Ahead
Marc Imhoff
11:30am|Bloomberg Hall Astrophysics Library
ABSTRACT: The human demand for products of photosynthesis is a powerful measure of the aggregate impact of human action on the biosphere and indicator of societal vulnerability to climate change. We show results from several studies that use...
May
26
2011

Institute for Advanced Study Informal Astrophysics Seminar

Cosmology with Supernovae: Progress and Prospects
Saurabh Jha
11:30am|Bloomberg Hall Astrophysics Library
ABSTRACT: Type Ia supernovae (SN Ia) are exquisite tools with which to trace the history of cosmic expansion, and they have a starring role in attempts to understand the dark energy that drives our accelerating Universe. Current supernova samples...
May
10
2011

Institute for Advanced Study Astrophysics Seminar

Shear-driven Turbulence on Earth and in Space
Jeremy Goodman
11:00am|Bloomberg Hall Astrophysics Library
ABSTRACT: Motivated by astronomical accretion disks in which magnetorotational instability (MRI) may be locally or episodically suppressed, such as protostellar disks, recent laboratory experiments have studied hydrodynamic turbulence in rotating...
Apr
28
2011

Institute for Advanced Study Informal Astrophysics Seminar

Did Star-Forming Galaxies Reionize the Universe?
Brant Robertson
11:30am|Bloomberg Hall Astrophysics Library
ABSTRACT: Star-forming galaxies represent a valuable tracer of cosmic history. Recent observational progress with the Hubble Space Telescope has led to the discovery and study of the earliest-known galaxies at a time when the universe was only ~800...