Formation times and masses of dark matter haloes

Details Formation times and masses of dark matter haloes Formation times and masses of dark matter haloes

2004-02-02

arxiv.org/abs/astro-ph/0402055v1

Mon.Not.Roy.Astron.Soc. 349 (2004) 1464

Astronomy and Astrophysics

Astrophysics

5 pages, 5 figures, MNRAS, in press

Scientific paper

10.1111/j.1365-2966.2004.07622.x

The most commonly used definition of halo formation is the time when a halo's most massive progenitor first contains at least half the final mass of its parent. Reasonably accurate formulae for the distribution of formation times of haloes of fixed mass have been available for some time. We use numerical simulations of hierarchical gravitational clustering to test the accuracy of formulae for the mass at formation. We also derive and test a formula for the joint distribution of formation masses and times. The structure of a halo is expected to be related to its accretion history. Our tests show that our formulae for formation masses and times are reasonably accurate, so we expect that they will aid future analytic studies of halo structure.

Affiliated with

Also associated with

No associations

Rating

Formation times and masses of dark matter haloes 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 Formation times and masses of dark matter haloes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Formation times and masses of dark matter haloes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-545400