Morphology of the Secondary CMB Anisotropies: the Key to "Smoldering" Reionization

Details Morphology of the Secondary CMB Anisotropies: the Key to "Smoldering" Reionization Morphology of the Secondary CMB Anisotropies: the Key to "Smoldering" Reionization

2002-06-13

arxiv.org/abs/astro-ph/0206217v1

Mon.Not.Roy.Astron.Soc.337:1435,2002

Astronomy and Astrophysics

Astrophysics

submitted to MNRAS

Scientific paper

10.1046/j.1365-8711.2002.06035.x

We show how the morphological analysis of the maps of the secondary CMB anisotropies can detect an extended period of ``smoldering'' reionization, during which the universe remains partially ionized. Neither radio observations of the redshifted 21cm line nor IR observations of the redshifted Lyman-alpha forest will be able to detect such a period. The most sensitive to this kind of non-gaussianity parameters are the number of regions in the excursion set, the perimeter of the excursion set, and the genus of the largest (by area) region. For example, if the universe reionized fully at z=6, but maintained about 1/3 mean ionized fraction since z=20, then a 2 arcmin map with 500x500 pixel resolution and a signal-to-noise ratio S/N=1/2 allows to detect the non-gaussianity due to reionization with better than 99% confidence level.

Affiliated with

Also associated with

No associations

Rating

Morphology of the Secondary CMB Anisotropies: the Key to "Smoldering" 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 Morphology of the Secondary CMB Anisotropies: the Key to "Smoldering" Reionization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Morphology of the Secondary CMB Anisotropies: the Key to "Smoldering" Reionization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-690533