Detectability of the effect of Inflationary non-Gaussianity on halo bias

Details Detectability of the effect of Inflationary non-Gaussianity on halo bias Detectability of the effect of Inflationary non-Gaussianity on halo bias

2009-09-17

arxiv.org/abs/0909.3224v2

Astrophysical Journal Letters 706 (2009) L91-L95

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

5 pages, 1 figure. Small changes to match published version

Scientific paper

We consider the description of the clustering of halos for physically-motivated types of non-Gaussian initial conditions. In particular we include non-Gaussianity of the type arising from single field slow-roll, multi fields, curvaton (local type), higher-order derivative-type (equilateral), vacuum-state modifications (enfolded-type) and horizon-scale GR corrections type. We show that large-scale halo bias is a very sensitive tool to probe non-Gaussianity, potentially leading, for some planned surveys, to a detection of non-Gaussianity arising from horizon-scale GR corrections. In tandem with cosmic microwave background constraints, the halo-bias approach can help enormously to discriminate among different shapes of non-Gaussianity and thus among models for the origin of cosmological perturbations.

Affiliated with

Also associated with

No associations

Rating

Detectability of the effect of Inflationary non-Gaussianity on halo bias 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 Detectability of the effect of Inflationary non-Gaussianity on halo bias, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detectability of the effect of Inflationary non-Gaussianity on halo bias will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-391061