The Effects of Primordial Non-Gaussianity on Cosmic Reionization

Details The Effects of Primordial Non-Gaussianity on Cosmic Reionization The Effects of Primordial Non-Gaussianity on Cosmic Reionization

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21914314d&link_type=abstract

American Astronomical Society, AAS Meeting #219, #143.14

Mathematics

Logic

Scientific paper

Most studies of cosmic reionization are based upon the rise of structure in a cold dark matter dominated universe from Gaussian random initial density fluctuations, which are consistent with current constraints from the Cosmic Microwave Background and large-scale clustering of galaxies. However, some inflationary models predict a larger deviation from Gaussianity in the initial conditions, so there is great interest in the possibility of detecting or further constraining the amplitude and type of primordial non-Gaussianity (PNG). We model the effects of PNG on reionization by a variety of techniques, including linear perturbation theory, semi-analytic models based on the extended Press-Schechter formalism, and large-scale radiative transfer simulations coupled to cosmological N-body simulations of structure formation. We quantify the effects of PNG on the history and topology of reionization, and the signatures of PNG in future observations of the 21cm line during the epoch of reionization.

Affiliated with

Also associated with

No associations

Rating

The Effects of Primordial Non-Gaussianity on Cosmic Reionization 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 The Effects of Primordial Non-Gaussianity on Cosmic Reionization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Effects of Primordial Non-Gaussianity on Cosmic Reionization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1576020