Texas Cosmology Center

Calendar

2012  |  2011  |  2010  |  2009

2012

September-December


Wed, Dec 12 - Fri, Dec 14
ATT Conference Center
Room 101

Cosmological Radiative Transfer Comparison Project Workshop IV

3-day Cosmology Workshop: click link, above, for details

host: Paul Shapiro, University of Texas at Austin


January-May


Mon, May 14 - Tues, May 15
ATT Conference Center
Room 301

TCC NIRB Workshop

Near Infrared Background and the Epoch of Reionization [abstract]

host: Eiichiro Komatsu, University of Texas at Austin


Mon, May 7 - Tues, May 8
ATT Conference Center
Room 203

TCC Gamma-Ray Workshop

Dark Matter Signatures in the Gamma-Ray Sky [abstract]

hosts: Eiichiro Komatsu & Can Kilic, University of Texas at Austin


Tue, May 1
3:30 P.M.
RLM 15.216B

TCC / Colloquium

Constraining Cosmology through the Growth of Structure: New Results from the South Pole Telescope [abstract]

John E. Carlstrom, University at Chicago


Mon, Apr 23
3:30 P.M.
RLM 15.216B

TCC / Astro Theory Seminar

New Probes of Weak Lensing [abstract]

Fabian Schmidt, California Institute of Technology


Wed, Apr 18
3:00 P.M.
RLM 15.216B

TCC / Cosmos Seminar

Constraining Dark Matter [abstract]

Hai-Bo Yu, University of Michigan


Wed, Mar 28
3:00 P.M.
RLM 15.216B

TCC / Cosmos Seminar

Cosmic Infrared Background and New Cosmological Populations [abstract]

Alexander "Sasha" Kashlinsky, NASA, Goddard Space Flight Center


Mon, Mar 26
3:30 P.M.
RLM 15.216B

TCC / Cosmos Seminar

Measuring the Large-Scale Flow of X-ray Luminous Clusters from WMAP Data [abstract]

In standard cosmological paradigm, large-scale peculiar velocities arise from gravitational instability due to mass inhomogeneities seeded during inflationary expansion. On sufficiently large scales, > 100 Mpc, this leads to a robust prediction of the amplitude and coherence length of these velocities independently of cosmological parameters or evolution of the Universe. For clusters of galaxies, their peculiar velocities can be measured from the kinematic component of the Sunyaev-Zel'dovich (SZ) effect produced by Compton scattering of cosmic microwave background (CMB) photons off the hot intracluster gas. I will discuss results from new measurements of the large scale peculiar flows using a large X-ray cluster catalog and all-sky CMB maps from the WMAP satellite. The results cast doubt that the gravitational instability from the observed mass distribution is the sole - or even dominant - cause of the detected motions. Instead it appears that the flow extends across the observable Universe and may be indicative of the primeval preinflationary structure of space-time and its landscape.

Alexander "Sasha" Kashlinsky, NASA, Goddard Space Flight Center