Astrophysics Seminars

Sep
06
2012

Institute for Advanced Study Informal Astrophysics Seminar - ADDED

Life and death on the edge: Strange supernovae, irregular moons and planets and chaotic stellar collisions
Hagai Perets
11:00am|Bloomberg Hall, Astrophysics Library
ABSTRACT: Many irregular astrophysical systems and phenomena are not so rare, and in fact constitute a large fraction of all astrophysical systems. I will discuss several such riregular systems, ranging from irregular moons in the Solar-system...
Jul
26
2012

Institute for Advanced Study Informal Astrophysics Seminar-NOTE SPECIAL TIME

Using geology to measure the density at the Galactic plane
2:00pm|Bloomberg Hall, Astrophysics Library
ABSTRACT: I will present and discuss paleoclimatic data from the past 500 million years. The data exhibits a clear periodicity which is most naturally explained by the vertical oscillations of the solar system perpendicular to the galactic plane. I...
Jun
21
2012

Institute for Advanced Study Informal Astrophysics Seminar

Correlation Between Black Hole Masses and Bulge Luminosities Not Fundamental
11:00am|Bloomberg Hall, Astrophysics Library
ABSTRACT: The correlation between the masses of central supermassive black holes (SMBHs) and the bulge luminosity of their host galaxies ---the SMBH-bulge relation--- is seen as fundamental to understand the formation and (co-)evolution of SMBHs and...
May
15
2012

Institute for Advanced Study Astrophysics Seminar

Radiation Magnetohydrodynamics of Accretion Disks and Feedback
11:00am|Bloomberg Hall Astrophysics Library
ABSTRACT: Studies of a variety of gas dynamical problems, for example the saturation of the MRI in the inner regions of accretion disks around compact objects, or the effects of feedback from starbursts and/or AGN, require numerical algorithms...
May
10
2012

Institute for Advanced Study Informal Astrophysics Seminar

New Light on Stellar Astrophysics with Kepler
Lucianne Walkowicz
11:00am|Bloomberg Hall, Astrophysics Library
ABSTRACT: Stellar magnetic activity leads to a variety of observable effects, from star spots that modulate the stellar brightness on the order of weeks to months, to flares, which release highly energetic radiation over the course of a few hours...
May
08
2012

Institute for Advanced Study Astrophysics Seminar

Ultrahigh Energy Cosmic Rays: What are they? Where do they come from? What can they teach us?
11:00am|Bloomberg Hall Astrophysics Library
ABSTRACT: The Pierre Auger Observatory has recorded a large number of Ultrahigh Energy Cosmic Rays, the detector is well understood, and a multitude of different analyses on sources and composition of UHECRs have been performed. The observational...