Department News: 2012
Ryan Keisler to receive APS DAP Early Recognition Award
December 19, 2012
Department members: Ryan Keisler
Congratulations to Prof. Michael Gladders!
December 14, 2012
Congratulations Mike on this well deserved recognition of your scholarly accomplishments!
Chair of the Department of Astronomy and Astrophysics
Department members: Michael D. Gladders, Angela V. Olinto
Congratulations to Dr. Christopher Greer!
October 31, 2012
"Calibrating Optical Richness using Sunyaev-Zel'dovich Observations."
"Chris Greer made critical contributions to the building and deploying of the Sunyaev-Zel'dovich Array (SZA), an interferometric array of 3.5 meter mm-wave telescopes located at the CARMA site in California. He used the SZA to image the SZ effect for a sample of galaxy clusters selected by their richness in the SDSS maxBCG cluster catalog. His thesis provides the first joint calibration of the SZ and optical mass-observable relation. This work is important for using cluster surveys for constraining cosmology, in particular the nature of dark energy, and it provides the ground work for the upcoming joint analysis of the large South Pole Telescope and Dark Energy Survey data sets."
- John Carlstrom, PhD advisor
Christopher has received a postdoctoral researcher position at Steward Observatory at the University of Arizona.
Department members: John E. Carlstrom
Department students: Christopher Greer
The MIDAS telescope installed at the Pierre Auger Observatory
October 15, 2012
Department members: Pedro Facal San Luis, Paolo Privitera
Congratulations to Dr. Melanie Simet!
August 3, 2012
"Galaxy cluster center detection methods with weak lensing."
"Melanie has studied weak gravitational lensing caused by galaxy clusters. She led the effort to measure this lensing signal in Stripe 82 of the Sloan Digital Sky Survey, with results that will help calibrate cluster masses and begin the community on the road to measuring tomography. For her thesis, Melanie studied the important effect that it is difficult to locate the true center of a galaxy cluster. This "mis-ceterning" problem leads to incorrect mass determinations. By using a combination of simulations and data from SDSS, Melanie quantified both the effect and various algorithms proposed to address it."
- Scott Dodelson, PhD advisor
Melanie has received a postdoctoral position at the Carnegie Mellon University.
Department members: Scott Dodelson
Department students: Melanie Simet
Congratulations to Dr. Samuel Leitner!
July 20, 2012
"The Star Formation History of Disk Galaxies & Implications for Simulations."
"In his thesis paper Sam has derived star formation histories of galaxies, which are still forming stars now, using a variety of observations on how star formation rate depends on stellar mass of galaxies as a function of cosmic epoch. Remarkably, the results show that galaxies such as our Milky Way have formed more than 80% of their stars over the last ten billion years of the evolution, and less than 20% during the first three billion years. This result is at variance with most simulations of galaxy formation and may help to explain why simulations generally fail to produce late-type disk galaxies with small bulges. In his paper, Sam has also uncovered a curious discrepancy between the star formation histories of dwarf galaxies derived using the method he used and those deduced from the color-magnitude diagram of stars for nearby dwarfs."
- Andrey Kravtsov, PhD advisor
Samuel has received a Prize Postdoctoral fellow position in the Center for Theory and Computation at the University of Maryland.
Department members: Andrey V. Kravtsov
Department students: Samuel Leitner
Congratulations to Dr. Christopher Kelso!
July 10, 2012
Congratulations to Christopher Kelso for successfully defending his PhD dissertation on "Recent Results in Dark Matter Direct Detection Experiments."
"Chris' research has been focused on dark matter, and interpretations of data from a number of underground experiments designed to search for it. Particularly exciting has been his work on dark matter interpretations of the signals reported by the CoGeNT, CRESST and DAMA experiments. While we cannot say for certain yet whether these experiments are seeing dark matter particles, Chris' work has certainly helped to make these experiments and their anomalous results a "hot topic" among particle physicists and cosmologists."
- Dan Hooper, PhD advisor
Christopher has received a postdoctoral scholar position at the University of Utah.
Department members: Dan Hooper
Congratulations to Dr. Eva Wuyts!
July 3, 2012
Congratulations to Eva Wuyts for successfully defending her PhD dissertation on "A Magnified View of High Redshift Star Formation."
Department members: Michael D. Gladders
Department students: Eva Wuyts
Stephan S. Meyer and the WMAP team Awarded the 2012 Gruber Cosmology Prize
June 20, 2012
2012 Gruber Cosmology Prize with NASA Wilkinson Microwave Anisotropy Probe (WMAP) lead Charles Bennett and other colleagues from the team.
The WMAP team used observations of the so-called "echo of the Big Bang," the Cosmic Microwave Background radiation, to determine the universe's vital statistics - its age, content, geometry, and origin. This feat in turn has helped transform cosmology itself into a precision science.
Department members: Stephan S. Meyer
Scientific projects: Microwave Anisotropy Probe
Angela Olinto has accepted appointment as Chair of the Department of Astronomy & Astrophysics
June 11, 2012
Thank you Angela! You can count on the support of us all!
- Rocky Kolb
Chair of the Department of Astronomy & Astrophysics
Department members: Edward ''Rocky'' W. Kolb, Angela V. Olinto
April 25, 2012
Visual imagery provides a glimpse into life and research at the Amundsen-Scott South Pole Station. Interactive components include a backdrop of the ceremonial South Pole and Extreme Cold Weather (ECW) gear photo op and a multi-touch table that encourages self-guided exploration of images, videos and data. The first destination for the exhibit is the USA Science and Engineering Festival in Washington DC (April 27-29)where Tom Plagge, Tyler Natoli and Kyle Story will represent the SPT science team. Other planned deployments include The World Science Festival Street Fair and special events at SAIC.
Department members: John E. Carlstrom
Scientific projects: South Pole Telescope
Congratulations to Prof. J. Bean!
February 15, 2012
2012 Alfred P. Sloan Research Fellow!
Please join us Thursday at 3pm in the TAAC Cosmic Soup Kitchen to celebrate!
Department members: Jacob L. Bean, Edward ''Rocky'' W. Kolb