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Science and Society podcast: Interview with Dr Kim Griest 1

Part 1 of a podcast with Dr. Kim Griest discussing dark matter and dark energy with Dr. David Lemberg/Sam Kephart on Science & Society radio, April 19th 2006. Source- http://www.scienceandsociety.net/podcasts/archives/2006/04/dr_kim_griest_p.html part 2- http://www.youtube.com/watch?v=Oxq7Bf0VrjY 'Dr. Kim Griest is Professor of Physics at the University of California, San Diego. Dr. Griest trained originally in particle theory, studying supersymmetry, before turning to cosmology and the particles coming out of the first nanosecond of the Early Universe. These particles (weakly interacting massive particles or WIMPs) may well be the mysterious dark matter that dominate the mass of the universe today and hold the galaxies together. In 1989, Dr. Griest started thinking about other kinds of dark matter, including black holes and small dim or dead stars, coining the term "MACHO" (massive astrophysical compact halo object) to describe them. After writing some theory papers on how to detect MACHOs via gravitational lensing, he joined a large collaboration (the MACHO collaboration) and led the analysis that eventually discovered gravitational microlensing and some evidence for this form of dark matter. Further work by the team eventually proved the majority of the dark matter cannot consist of MACHOs, thus leaving WIMPs as the primary suspect. Currently, Dr. Griest works on gravitational lensing, as well as dark energy, serving as chair of the Science Definition Team for the NASA/DoE Joint Dark Energy Mission (JDEM), and as a member of other NASA satellite mission teams. Dr. Griest has published over 150 scientific papers, is a fellow of the American Physical Society, and has won awards including an Alfred P. Sloan Fellowship, DoE Outstanding Junior Investigator, Cottrell Scholar, R&D 500, and Chancellor's Associate award for excellence in undergraduate teaching. Dr. Griest is also interested in energy policy, and is co-author of a petition by physicists against the new U.S. policy of first use of nuclear weapons against non-nuclear states.' Blog relating to Dark Energy- http://blog.myspace.com/index.cfm?fuseaction=blog.view&friendID=120129993&blogID=336082867&Mytoken=AEBE9FCE-5609-48E3-AE7A2B41958BE33F3106235 Hubblesites Dark Energy website-http://hubblesite.org/hubble_discoveries/dark_energy/
Length: 08:56

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