The wedding of modified dynamics and non-exotic dark matter in galaxy clusters

Details The wedding of modified dynamics and non-exotic dark matter in galaxy clusters The wedding of modified dynamics and non-exotic dark matter in galaxy clusters

2007-06-09

arxiv.org/abs/0706.1279v2

Astronomy and Astrophysics

Astrophysics

to appear in World Scientific, proceedings of DARK 2007

Scientific paper

We summarize the status of Modified Newtonian Dynamics (MOND) in galaxy clusters. The observed acceleration is typically larger than the acceleration threshold of MOND in the central regions, implying that some dark matter is necessary to explain the mass discrepancy there. A plausible resolution of this issue is that the unseen mass in MOND is in the form of ordinary neutrinos with masses just below the experimentally detectable limit. In particular, we show that the lensing mass reconstructions of the clusters 1E0657-56 (the bullet cluster) and Cl0024+17 (the ring) do not pose a new challenge to this scenario. However, the mass discrepancy for cool X-ray emitting groups, in which neutrinos cannot cluster, pose a more serious problem, meaning that dark baryons could present a more satisfactory solution to the problem of unseen mass in MOND clusters.

Affiliated with

Also associated with

No associations

Rating

The wedding of modified dynamics and non-exotic dark matter in galaxy 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 The wedding of modified dynamics and non-exotic dark matter in galaxy clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The wedding of modified dynamics and non-exotic dark matter in galaxy clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-126277