Information content in the halo-model dark-matter power spectrum

Details Information content in the halo-model dark-matter power spectrum Information content in the halo-model dark-matter power spectrum

2006-04-13

arxiv.org/abs/astro-ph/0604282v3

Mon.Not.Roy.Astron.Soc.Lett. 370 (2006) L66-L70

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures, accepted to MNRAS letters. Minor changes to match accepted version

Scientific paper

10.1111/j.1745-3933.2006.00190.x

Using the halo model, we investigate the cosmological Fisher information in the non-linear dark-matter power spectrum about the initial amplitude of linear power. We find that there is little information on `translinear' scales (where the one- and two-halo terms are both significant) beyond what is on linear scales, but that additional information is present on small scales, where the one-halo term dominates. This behavior agrees with the surprising results that Rimes & Hamilton (2005, 2006) found using N-body simulations. We argue that the translinear plateau in cumulative information arises largely from fluctuations in the numbers of large haloes in a finite volume. This implies that more information could be extracted on non-linear scales if the masses of the largest haloes in a survey are known.

Affiliated with

Also associated with

No associations

Rating

Information content in the halo-model dark-matter power spectrum 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 Information content in the halo-model dark-matter power spectrum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Information content in the halo-model dark-matter power spectrum will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-514428