The Dark Ages Radio Explorer (DARE)
When: 3pm PST on Thursday, March 8th 2012
Where: NASA Ames Research Center N-245 Auditorium or remotely (details below)
A concept for a new space-based cosmology mission called the Dark Ages Radio Explorer (DARE) will be presented in this talk. DARE’s science objectives include (1) When did the first stars form? (2) When did the first accreting black holes form? (3) When did Reionization begin? (4) What surprises does the end of the Dark Ages hold (e.g., Dark Matter decay)? DARE will use the highly-redshifted hyperfine 21-cm transition from neutral hydrogen to track the formation of the first luminous objects by their impact on the intergalactic medium during the end of the Dark Ages and during Cosmic Dawn (redshifts z=11-35). It will measure the sky-averaged spin temperature of neutral hydrogen at the unexplored epoch 80-420 million years after the Big Bang, providing the first evidence of the earliest stars and galaxies to illuminate the cosmos and testing our models of galaxy formation.
Bio: Dr. Jack Burns is a Professor in the Department of Astrophysical and Planetary Sciences and Vice President Emeritus for Academic Affairs and Research fro the University of Colorado Boulder. He is also Director of the NASA Lunar Science Institute’s Lunar University Network for Astrophysics Research (LUNAR), a NASA-funded center. Burns received his B.S. degree, magna cum laude, in Astrophysics from the University of Massachusetts. He was awarded a Ph.D. in Astronomy from Indiana University. Dr. Burns has 370 publications in refereed journals, books, and in conference proceedings and abstracts (as listed in NASA’s Astrophysics Data System). Burns is an elected Fellow of the American Physical Society and the American Association for the Advancement of Science. He received NASA’s Exceptional Public Service Medal in 20120 for his service on the NASA Advisory Council (NAC) and as Chair of the NAC Science Committee.
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Posted by: Soderman/NLSI Staff