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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20110317T000000
DTEND;TZID=Atlantic/Canary:20110317T010000
UID:iactalks-253
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/253
CREATED:2011-03-17T00:00:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Dark Matter in Spiral Galaxies: dynamical constraints
DESCRIPTION:Dark Matter in Spiral Galaxies: dynamical constraints\nDr. Albe
 r Bosma\n\nDark Matter in Galaxies is an important subject of current astr
 ophysical research. I will concentrate on spiral galaxies, and first give 
 an overview of the subject from the standpoint of a radioastronomer with a
  long involvement in the subject. This includes a historical introduction 
 and a review of some of the present-day debates. The currently popular Lam
 bda-CDM model has problems on the scale of galaxies. In a second part I wi
 ll address more specifically the problem that we still do not know how muc
 h dark matter there is in spiral galaxies, and how it is distributed. This
  is due to the fact that the M/L of the visible matter is poorly constrain
 ed and that there is a 'conspiracy' between the dark and the baryonic mate
 rial. I will present various dynamical methods that have been proposed to 
 constrain the dark matter mass distribution and discuss their advantages a
 nd disadvantages.
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