Physics – Nuclear Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003nuphs.124..140s&link_type=abstract
Nuclear Physics B Proceedings Supplements, Volume 124, p. 140-143.
Physics
Nuclear Physics
Scientific paper
The late infall of cold dark matter onto an isolated galaxy, such as our own, produces streams and caustics in its halo. The outer caustics are topological spheres, whereas the inner caustics axe rings. The self-similar model of galactic halo formation predicts that the caustic ring radii follow the approximate law an ~ 1/n. In a study of 32 extended and well-measured external galactic rotation curves evidence was found for this law. In the case of the Milky Way, the locations of eight rises in the rotation curve fit the prediction of the self-similar model at the 3% level. Moreover, a triangular feature in the IRAs map of the galactic plane is consistent with the imprint of a ring caustic upon the baxyonic matter. These observations imply that the dark matter in our neighborhood is dominated by a single flow. Estimates of the flow's density and velocity vector are given.
This work is supported in part by the U.S. Department of Energy under grant DE-FG02-97ER41029.
No associations
LandOfFree
Dark matter caustics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dark matter caustics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dark matter caustics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1884972