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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20081113T000000
DTEND;TZID=Atlantic/Canary:20081113T010000
UID:iactalks-158
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/158
CREATED:2008-11-13T00:00:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:The (very) small-scale structure of dark matter halos
DESCRIPTION:The (very) small-scale structure of dark matter halos\nProf. Si
 mon White\n\nIn our now-standard picture for the growth of structure, dark
  matter halos are the basic unit of nonlinear structure in the present Uni
 verse. I will report results from simulations of galaxy-scale dark halos w
 ith more than an order of magnitude better mass resolution than any previo
 usly published work. Tests demonstrate detailed convergence for (sub)struc
 tures well below a millionth the mass of the final system. Even with such 
 resolution the fraction of halo mass in bound subhalos does not rise above
  a few percent within the half-mass radius. I will also present a new simu
 lation technique which allows structure in the dark matter distribution to
  be studied on very much smaller scales. This is required for accurate for
 ecasts of the expected signal both in earth-bound experiments designed to 
 detect dark matter directly, and in indirect detection experiments like GL
 AST which attempt to image dark matter annihilation radiation at gamma-ray
  wavelengths.\n\n
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