Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-10-31
Astronomy and Astrophysics
Astrophysics
Revised version. Accepted by ApJ Letter. Significantly improved. Numerical test for the SCDM model included. 14 pages, Latex f
Scientific paper
10.1086/312012
We present numerical testing results of our mass function derived in our previous paper, and compare the testing results with those of the popular Press-Schechter (PS) mass function. Two fiducial models are considered for the test: the scale-free power-law spectra P(k) \propto k^{n} with spectral indices n=-1, 0 and the standard cold dark matter (SCDM) model with Omega =1 and h=0.5. For the power-law models, we use numerical data averaged over several different output times: ten output times from two N-body realizations for the n=-1 power-law model; four outputs from one realization for the n=0 model. While for the SCDM model, we consider four outputs separately at redshifts z = 0, 0.43, 1.14 and 1.86 from one large N-body simulations. The comparison results show that our mass function fits the numerical data in a much improved way over the PS one. Thus, we expect that our mass function can be a viable alternative of the PS mass function in applications to various areas.
Lee Jounghun
Shandarin Sergei F.
No associations
LandOfFree
Comparison of Analytical Mass Functions with Numerical Simulations 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 Comparison of Analytical Mass Functions with Numerical Simulations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comparison of Analytical Mass Functions with Numerical Simulations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-472947