Model-Independent Reionization Observables in the CMB

Details Model-Independent Reionization Observables in the CMB Model-Independent Reionization Observables in the CMB

2003-03-18

arxiv.org/abs/astro-ph/0303400v1

Phys.Rev.D68:023001,2003

Astronomy and Astrophysics

Astrophysics

4 pages, 5 figures, submitted to PRD (rapid communications)

Scientific paper

10.1103/PhysRevD.68.023001

We represent the reionization history of the universe as a free function in redshift and study the potential for its extraction from CMB polarization spectra. From a principal component analysis, we show that the ionization history information is contained in 5 modes, resembling low-order Fourier modes in redshift space. The amplitude of these modes represent a compact description of the observable properties of reionization in the CMB, easily predicted given a model for the ionization fraction. Measurement of these modes can ultimately constrain the total optical depth, or equivalently the initial amplitude of fluctuations to the 1% level regardless of the true model for reionization.

Affiliated with

Also associated with

No associations

Rating

Model-Independent Reionization Observables in the CMB 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 Model-Independent Reionization Observables in the CMB, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Model-Independent Reionization Observables in the CMB will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-119006