Astrophysics Seminars

Feb
04
2014

Institute for Advanced Study Astrophysics Seminar - NOTE LOCATION!

Once Upon a Time in Kamchatka: The Extraordinary Search for Natural Quasicrystals
Paul Steinhardt
11:00am|Bloomberg Hall, Lecture Hall

ABSTRACT: Quasicrystals are exotic materials that have symmetries that were once thought to be impossible for matter. The first known examples were synthesized in the laboratory 30 years ago, but could Nature have beaten us to the punch? This talk...

Jan
30
2014

Institute for Advanced Study Informal Astrophysics Seminar

Supernova Remnants as Galactic Cosmic-ray Factories
Damiano Caprioli
11:00am|Bloomberg Hall, Astrophysics Library

One century after the pioneering discovery of cosmic rays by V. Hess, the present generation of X- and gamma-ray telescopes is finally unravelling the origin of extraterrestrial particles with energies up to 10^8 GeV, which are thought to be...

Jan
28
2014

Institute for Advanced Study Astrophysics Seminar

ALMA Observations of Galaxy Evolution and Nuclear Activity
Nick Scoville
11:00am|Bloomberg Hall Astrophysics Library
ABSTRACT: In the COSMOS survey we have now imaged the large scale structures out to redshift 3 using 200,000 galaxies with precision photometric redshifts. The evolution of the galaxies, their stellar masses and star formation activity is found to...
Jan
23
2014

Institute for Advanced Study Informal Astrophysics Seminar

Three Pieces in the Form of a Ring
Jihad Touma
11:00am|Bloomberg Hall, Astrophysics Library

ABSTRACT: I review progress on formally interrelated problems of current astrophysical import: a-The thermodynamics and dynamics of stellar clusters around super-massive black holes; b-The dynamics of multi-planet systems in binaries.

Jan
21
2014

Institute for Advanced Study Astrophysics Seminar

Gaps in Galactic Stellar Streams
Raymond Carlberg
11:00am|Bloomberg Hall Astrophysics Library
ABSTRACT: The LCDM paradigm predicts that the Milky Way dark halo has nearly 10% of its mass in the form of thousands of sub-halos, far more than can be accounted for with the known dwarf galaxies. Globular clusters dissolving in the tidal field of...
Jan
14
2014

Institute for Advanced Study Astrophysics Seminar

Solar Chemical Anomalies and Late Accretion
Wick Haxton
11:00am|Bloomberg Hall Astrophysics Library
ABSTRACT: One of the last problems that John Bahcall considered was the solar abundance problem, the conflict between helioseismology, which indicates a high-metallicity solar core, and improved analyses of photospheric absorption lines, which favor...