Mathematics – Logic
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.0606p&link_type=abstract
American Astronomical Society Meeting 210, #06.06; Bulletin of the American Astronomical Society, Vol. 39, p.102
Mathematics
Logic
Scientific paper
Observational evidence for the radial alignment of satellites with their dark matter host has been accumulating steadily in the past few years. This effect is seen over a wide range of scales, from massive clusters of galaxies all the way to galaxy sized systems. However, the physical mechanism causing these alignments has still to be established. To this end, we have carried out a detailed analysis of the shape and spin of substructure dark matter halos in high resolution n-body cosmological simulations. We find a very strong tendency for radial alignment of the substructure with its host halo. This alignment peaks once the halo has passed the virial radius of the host for the first time, but is not subsequently diluted, even after the halos have gone through as many as four pericentric passages. This evidence points to the existence of a very rapid dynamical mechanism acting on these systems and we argue that tidal torquing throughout their orbits is the most likely candidate.
No associations
LandOfFree
Galaxy Alignments in Simulated Clusters 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 Galaxy Alignments in Simulated Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galaxy Alignments in Simulated Clusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1028101