Calendar
2010
September-December
Wed, Nov 24 |
TCC / Cosmos Seminar The Atacama Cosmology Telescope: The Present and the Future [abstract] |
Mon, Nov 22 |
TCC / Astro Theory Seminar Self-regulated Evolution of Galaxies and Supermassive Black Holes [abstract] |
Thurs, Nov 18 |
TCC / Exgal Seminar Exploring the Dark Universe with Gravitational Lensing [abstract] |
Thu, Nov 11 |
Special TCC Seminar A Weak Lensing Study of the Coma Cluster, and a Higher-Order Moment Approach to Weak Lensing [abstract] |
Mon, Nov 8 |
TCC / Astro Theory Seminar Measuring the Universe: Recent Developments in Baryon Acoustic Oscillations [abstract] |
Mon, Oct 18 |
TCC / Astro Theory Seminar Looking for WIMPs with the Cryogenic Dark Matter Search (CDMS) [abstract] |
Wed, Oct 6 |
TCC / Stellar Seminar The Square Kilometre Array [abstract] |
Tue, Oct 5 |
TCC / Colloquium Equivalence Principle and Cosmic Acceleration [abstract] |
Mon, Oct 4 |
TCC / Astro Theory Seminar Dynamics of Bubble Collisions: A New Mechanism for Creating Bubbles in the Early Universe [abstract] |
Wed, Sep 8 |
TCC / Cosmos Seminar Optimizing a ground-based CMB polarization experiment [abstract] |
Wed, Sep 1 |
TCC / Cosmos Seminar Cosmic Rays and the Quest for New Physics [abstract] Recent cosmic ray data, notably from the Pamela and Fermi satellites, indicate that previously unaccounted-for powerful sources in the Galaxy inject high-energy electrons and positrons. Interestingly, this new source class might be related to new fundamental particle physics, and specifically to pair-annihilation or decay of galactic dark matter. I will discuss how this exciting scenario is constrained by Fermi gamma-ray observations, and which astrophysical source counterparts could also be responsible for the high-energy electron-positron excess. In particular, I will review the case for nearby mature pulsars, and the impact of newly discovered radio-quiet pulsars that pulsate in gamma rays. While high-energy electron-positron measurements sample local (closer than 1 kpc) cosmic rays, diffuse radio and gamma-ray emission informs us about the global galactic cosmic ray population. I will thus offer a few thoughts on recent claims involving the detection of diffuse radio ("WMAP haze") and gamma-ray ("Fermi haze") emissions and on implications for the quest for New Physics. |
March-August
Fri, Mar 12 |
TCC / Special Seminar The Formation of the First Stars: Simulations on a Moving Mesh [abstract] Thomas Greif, Max Planck Institut for Astrophysics, Garching, Germany |
Mon, Mar 1 |
TCC / Special Supernova Seminar Diversities of the Type Ia Supernova Light Curves from the Ejecta Velocity: Evidence for Systematics in SN Ia distances [abstract] Xiaofeng Wang, Texas A&M University |
January-February
Mon, Feb 22 |
TCC / Theoretical Astrophysics Seminar The 7-year WMAP Observations: Cosmological Interpretation [abstract] |
Sat, Feb 6 |
Eighteenth Annual Great Lecture in Astronomy Walk Softly When Exploring the Dark Side of the Universe: Black Holes, Dark Matter and Dark Energy [abstract] |
Mon, Feb 1 |
TCC / Theoretical Astrophysics Seminar Cosmic Voids as a Cosmological Probe [abstract] |