Cosmology: small scale issues revisited

Details Cosmology: small scale issues revisited Cosmology: small scale issues revisited

2009-09-10

arxiv.org/abs/0909.2247v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

12 pages, 2 figures, Invited contribution to NJP Focus Issue on Dark Matter and Particle Physics. (This is a substantially upd

Scientific paper

The abundance of dark matter satellites and subhalos, the existence of density cusps at the centers of dark matter halos, and problems producing realistic disk galaxies in simulations are issues that have raised concerns about the viability of the standard cold dark matter (LambdaCDM) scenario for galaxy formation. This article reviews these issues, and considers the implications for cold vs. various varieties of warm dark matter (WDM). The current evidence appears to be consistent with standard LambdaCDM, although improving data may point toward a rather tepid version of LambdaWDM -- tepid since the dark matter cannot be very warm without violating observational constraints.

Affiliated with

Also associated with

No associations

Rating

Cosmology: small scale issues revisited 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 Cosmology: small scale issues revisited, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmology: small scale issues revisited will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-132344