Seminar archive 2018 | Fermilab Cosmic Physics Center

Event date	Title	Speakers	Host	Summary
Feb. 26, 2018, 2:00 pm US/Central	Stellar Streams Discovered in the Dark Energy Survey	Nora Shipp, U. Chicago	Yuanyuan Zhang	We perform a search for stellar streams around the Milky Way using the first three years of multi-band optical imaging data from the Dark Energy Survey (DES). We use DES data covering ∼5000 sq. deg. to a depth of g>23.5 with a relative photometric calibration uncertainty of <1%. This data set yields unprecedented sensitivity to... More »
Feb. 26, 2018, 2:00 pm US/Central	Stellar Streams Discovered in the Dark Energy Survey	Nora Shipp, U. Chicago		We perform a search for stellar streams around the Milky Way using the first three years of multi-band optical imaging data from the Dark Energy Survey (DES). We use DES data covering ∼5000 sq. deg. to a depth of g>23.5 with a relative photometric calibration uncertainty of <1%. This data set yields unprecedented sensitivity to... More »
March 5, 2018, 2:00 pm US/Central	TBD	Kimberly Boddy, Johns Hopkins
March 19, 2018, 2:00 pm US/Central	Intensity Interferometry in the Era of Giant Telescopes	Albert Stebbins, FNAL		Three widely separated 30m class optical telescopes (E-ELT, GMT, TMT) will start observations in the coming decade and will provide a new opportunity to probe moderately dim sources with unprecedented angular resolution using the spectroscopic count intensity interferometry technique (see Hanbury Brown and Twiss). The large baselines which extend up to 10,000 km probe angular... More »
March 26, 2018, 2:00 pm US/Central	TBD	Michael Cooper, UC Irvine
April 2, 2018, 2:00 pm US/Central	TBD	Mike Boylan-Kolchin, UT Austin
April 9, 2018, 2:00 pm US/Central	TBD	Andrew Long, U. Chicago KICP
April 16, 2018 US/Central	No Seminar (APS Meeting)	N/A
April 23, 2018, 2:00 pm US/Central	TBD	Mark Devlin, UPenn
April 30, 2018, 2:00 pm US/Central	TBD	Heidi Wu
May 7, 2018, 2:00 pm US/Central	TBD	Jason Detwiler, U Wisconsin Madison
May 21, 2018, 2:00 pm US/Central	TBD	Brian Keating, UC San Diego
May 30, 2018, 2:00 pm US/Central	Galaxy cluster mass measurements in the Dark Energy Survey	Tom McClintock, University of Arizona		Galaxy clusters are a powerful probe of cosmological parameters and host up to hundreds of galaxies. These clusters reside in massive dark matter halos, which are virialized structures comprised of up to a few times 10^15 solar masses. Forming the foundation of galaxy cluster cosmology are two critical components: measurements of cluster masses, and models... More »
June 4, 2018, 2:00 pm US/Central	Anisotropies in the Gravitational Wave Background from Cosmological Phase Transitions	Yuhsin Tsai, U Maryland		Phase transitions in the early universe can readily create an observable stochastic gravitational wave background. I will argue that such a background necessarily contains anisotropies analogous to those of the cosmic microwave background (CMB) of photons, and that these too may be within reach of proposed gravitational wave detectors. Correlations within the gravitational wave anisotropies... More »
June 11, 2018, 2:00 pm US/Central	The Linear Point: a cleaner cosmological standard ruler in the galaxy correlation	Stefano Anselmi, Observatoire de Paris		Cosmology has made fundamental progress thanks to the role of standard rulers: objects of known size that are constant in redshift. The acoustic peak in the large scale structure clustering correlation function is one of them. However, in the era of precision cosmology, its power has been highly challenged by late time non-linear effects that... More »
June 18, 2018, 2:00 pm US/Central	TBD	Oren Slone, Princeton
June 25, 2018, 2:00 pm US/Central	TBD	Julio Navarro, U Victoria
July 9, 2018, 2:00 pm US/Central	A New Frontier in the Search for Dark Matter	Gordan Krnjaic, Fermilab		The gravitational evidence for the existence of dark matter is overwhelming; observations of galactic rotation curves, the CMB power spectrum, and light element abundances independently suggest that over 80% of all matter is “dark” and beyond the scope of the Standard Model. However, its particle nature is currently unknown, so discovering its potential non-gravitational interactions... More »
July 30, 2018, 2:00 pm US/Central	TBD	Jia Liu, UChicago
Aug. 6, 2018, 2:00 pm US/Central	TBD	Robert Nemiroff, MTU
Aug. 8, 2018, 2:00 pm US/Central	TBD (Note different day)	Francesco Navarro
Aug. 13, 2018, 2:00 pm US/Central	TBD	Asher Berlin, SLAC
Aug. 13, 2018, 2:00 pm US/Central	Massive Gravity and Cosmology	Rachel Rosen, Columbia
Sept. 17, 2018, 2:00 pm US/Central	TBD	Eduardo Rozo, Arizona
Sept. 24, 2018, 2:00 pm US/Central	TBD	Kate Scholberg, Duke
Oct. 1, 2018, 2:00 pm US/Central	TBD	Julian Munoz, Harvard
Oct. 15, 2018, 2:00 pm US/Central	TBD	Yao-Yuan Mao, Pittsburgh
Oct. 29, 2018, 2:00 pm US/Central	TBD	Suzanne Staggs, Princeton
Nov. 5, 2018, 2:00 pm US/Central	Dark matter axion clumps	Mark Hertzberg, Tufts		In this talk I begin by reviewing how dark matter axions can undergo Bose-Einstein condensation and why this is captured by classical field theory. I explain that such condensates are spatially localized clumps, as they are organized by gravitation and self-interactions, and they may populate the galaxy. I discuss both the ground state and finite... More »
Nov. 12, 2018, 2:00 pm US/Central	TBD	Reyco Henning, UNC Chapel Hill
Nov. 19, 2018, 2:00 pm US/Central	TBD	Raymond Co, Michigan
Nov. 26, 2018, 2:00 pm US/Central	TBD	Deanna Hooper, Aachen University	Dan Hooper
Dec. 3, 2018, 2:00 pm US/Central	TBD	Anson Hook, University of Maryland, College Park	Gordan
Dec. 10, 2018, 2:00 pm US/Central	TBD	Hongwan Liu, MIT	TBD
Dec. 17, 2018, 2:00 pm US/Central	TBD	Nilanjan Banik, Amsterdam/Leiden