Mass Function of Low Mass Dark Halos

Details Mass Function of Low Mass Dark Halos Mass Function of Low Mass Dark Halos

2004-01-08

arxiv.org/abs/astro-ph/0401097v1

Astrophys.J. 605 (2004) 709-713

Astronomy and Astrophysics

Astrophysics

to be published in ApJ

Scientific paper

10.1086/382649

The mass function of dark halos in a Lambda-dominated cold dark matter (LambdaCDM) universe is investigated. 529 output files from five runs of N-body simulations are analyzed using the friends-of-friends cluster finding algorithm. All the runs use 512^3 particles in the box size of 35 h^{-1}Mpc to 140 h^{-1}Mpc. Mass of particles for 35 h^{-1} Mpc runs is 2.67 times 10^7 h^{-1} M_{solar}. Because of the high mass resolution of our simulations, the multiplicity function in the low-mass range, where the mass is well below the characteristic mass and $\nu = \delta_c / \sigma \lesssim 1.0$, is evaluated in the present work, and is well fitted by the functional form proposed by Sheth & Tormen (ST). However, the maximum value of the multiplicity function from our simulations at $\nu \sim 1$ is smaller, and its low mass tail is shallower when compared with the ST multiplicity function.

Affiliated with

Also associated with

No associations

Rating

Mass Function of Low Mass Dark Halos 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 Mass Function of Low Mass Dark Halos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mass Function of Low Mass Dark Halos will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-62331