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Subject:   Applied Physics/Physics Colloquium
Sponsor:   Applied Physics/Physics
Speaker:   Professor Joel Primack
Date:   Tuesday, November 7, 2000
Time:   4pm -
Location:   TCSEQ 201 [look for it in a campus map]
Contact:   Judy Meo
Professor Joel Primack from University of California, Santa Cruz "The State of the Universe: Cold Dark Matter and all that" CDM has become the standard modern theory of cosmological structure formation. But despite its many successes, there has been concern about CDM on small scales since the 1994 papers by Flores and Primack and by Moore pointing out the contradiction between the linearly rising rotation curves for dwarf galaxies and the 1/r cusps at the centers of simulated CDM halos. Other CDM issues include the very l arge number of small satellite halos in simulations, far more than the number of small galaxies in the local group, and possible disagreements between the CDM vs. observed power spectra. This talk will review all the recent cosmological data, which favors a model with about 1/3 of critical density in dark matter and 2/3 in dark energy, and then focus on the status of CDM based on the latest data -- which have lessened, although not entirely resolved, many of the former concerns.
Event history: Submitted by judymeo on 26-Oct-2000;
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