Astronomy and Astrophysics – Astrophysics
Scientific paper
1996-01-12
Astrophys.J. 464 (1996) L11
Astronomy and Astrophysics
Astrophysics
9 pages of text in LaTeX, 1 postscript Table, 4 postscript figures (2 color plates), submitted to The Astrophysical Journal (L
Scientific paper
10.1086/310077
Fourier analysis and power spectrum estimation of the cosmic microwave background anisotropy on an incompletely sampled sky developed by Gorski (1994) has been applied to the high-latitude portion of the 4-year COBE DMR 31.5, 53 and 90 GHz sky maps. Likelihood analysis using newly constructed Galaxy cuts (extended beyond |b| = 20deg to excise the known foreground emission) and simultaneously correcting for the faint high latitude galactic foreground emission is conducted on the DMR sky maps pixelized in both ecliptic and galactic coordinates. The Bayesian power spectrum estimation from the foreground corrected 4-year COBE DMR data renders n ~ 1.2 +/- 0.3, and Q_{rms-PS} ~ 15.3^{+3.7}_{-2.8} microK (projections of the two-parameter likelihood). These results are consistent with the Harrison-Zel'dovich n=1 model of amplitude Q_{rms-PS} ~ 18 microK detected with significance exceeding 14sigma (dQ/Q < 0.07). (A small power spectrum amplitude drop below the published 2-year results is predominantly due to the application of the new, extended Galaxy cuts.)
Banday Anthony J.
Bennett Charles L.
Górski Kris M.
Hinshaw Gary
Kogut Alan
No associations
LandOfFree
Power Spectrum of Primordial Inhomogeneity Determined from the 4-Year COBE DMR Sky Maps 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 Power Spectrum of Primordial Inhomogeneity Determined from the 4-Year COBE DMR Sky Maps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power Spectrum of Primordial Inhomogeneity Determined from the 4-Year COBE DMR Sky Maps will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-269595