Cross-Power Spectrum and Its Application on Window Functions in the WMAP data

Details Cross-Power Spectrum and Its Application on Window Functions in the WMAP data Cross-Power Spectrum and Its Application on Window Functions in the WMAP data

2010-11-29

arxiv.org/abs/1011.6201v3

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

added the part of applying cross power spectrum on WMAP DA maps and frequency band maps and submitted to ApJ

Scientific paper

Cross-power spectrum is a quadratic estimator between two maps that can provide unbiased estimate of the underlying power spectrum of the correlated signals, which is therefore used for extracting the power spectrum in the WMAP data. In this paper we discuss the limit of cross-power spectrum and derive the residual from uncorrelated signal, which is the source of error in power spectrum extraction. We employ the estimator to extract window functions by crossing pairs of extragalactic point sources. We desmonstrate its usefulness in WMAP Difference Assembly maps where the window functions are measured via Jupiter and then extract the window functions of the 5 WMAP frequency band maps.

Affiliated with

Also associated with

No associations

Rating

Cross-Power Spectrum and Its Application on Window Functions in the WMAP data 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 Cross-Power Spectrum and Its Application on Window Functions in the WMAP data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cross-Power Spectrum and Its Application on Window Functions in the WMAP data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-220728