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SUMMARY:Cosmology in our Backyard - Carlos Frenk (Durham)
DTSTART:20120823T150000Z
DTEND:20120823T160000Z
UID:TALK39221@talks.cam.ac.uk
CONTACT:Paula younger
DESCRIPTION:The LCDM cosmological model accounts for an impressive array o
 f data on\nthe large-scale structure of the universe\, from scales of a fe
 w\nmegaparsecs to a few gigaparsecs. On submegaparsec scales\, however\, t
 he\nmodel cannot be tested with the same degree of rigour as on larger sca
 les\nwhere microwave background radiation data and measures of galaxy\nclu
 stering provide clean and well-understood diagnostics. Yet\, it is\nprecis
 ely on these small scales that the nature of the dark matter\nmanifests it
 self most clearly. I will discuss theoretical predictions for\nthe small-s
 cale structure of the universe which appear to be discrepant\nwith recent 
 kinematical data for satellite galaxies of the Milky Way.\nPossible soluti
 ons range from the relatively mundane - that the mass of\nour galaxy is sm
 aller than is often thought - through exotic baryonic\nprocesses to the mo
 re radical assumption that the dark matter is not what\nthe standard theor
 y assumes.
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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