Secondary CMB anisotropies in a universe reionized in patches

Details Secondary CMB anisotropies in a universe reionized in patches Secondary CMB anisotropies in a universe reionized in patches

1998-03-17

arxiv.org/abs/astro-ph/9803188v1

Astrophys.J. 508 (1998) 435-439

Astronomy and Astrophysics

Astrophysics

7 pages, 2 figures, submitted to ApJ

Scientific paper

10.1086/306432

In a universe reionized in patches, the Doppler effect from Thomson scattering off free electrons generates secondary cosmic microwave background (CMB) anisotropies. For a simple model with small patches and late reionization, we analytically calculate the anisotropy power spectrum. Patchy reionization can, in principle, be the main source of anisotropies on arcminute scales. On larger angular scales, its contribution to the CMB power spectrum is a small fraction of the primary signal and is only barely detectable in the power spectrum with even an ideal, i.e. cosmic variance limited, experiment and an extreme model of reionization. Consequently patchy reionization is unlikely to affect cosmological parameter estimation from the acoustic peaks in the CMB. Its detection on small angles would help determine the ionization history of the universe, in particular the typical size of the ionized region and the duration of the reionization process.

Affiliated with

Also associated with

No associations

Rating

Secondary CMB anisotropies in a universe reionized in patches 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 Secondary CMB anisotropies in a universe reionized in patches, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Secondary CMB anisotropies in a universe reionized in patches will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-438835