Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-11-19
Astrophys.J. 573 (2002) 1
Astronomy and Astrophysics
Astrophysics
substantially revised and final version, accepted by ApJ
Scientific paper
10.1086/340492
A model-independent determination of the primordial power spectrum of matter density fluctuations could uniquely probe physics of the very early universe, and provide powerful constraints on inflationary models. We parametrize the primordial power spectrum $A_s^2(k)$ as an arbitrary function, and deduce its binned amplitude from the cosmic microwave background radiation anisotropy (CMB) measurements of Maxima, Boomerang, and DASI. We find that for a flat universe with $A_s^2(k)=1$ (scale-invariant) for scales $k<0.001 $h/Mpc, the primordial power spectrum is marginally consistent with a scale-invariant Harrison-Zeldovich spectrum. However, we deduce a rise in power compared to a scale-invariant power spectrum for $0.001 h/{Mpc} \la k \la 0.01 h/{Mpc}$. Our results are consistent with large-scale structure data, and seem to suggest that the current observational data allow for the possibility of unusual physics in the very early universe.
Mathews Grant J.
Wang Yadong
No associations
LandOfFree
Model Independent Primordial Power Spectrum from Maxima, Boomerang, and DASI 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 Model Independent Primordial Power Spectrum from Maxima, Boomerang, and DASI Data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Model Independent Primordial Power Spectrum from Maxima, Boomerang, and DASI Data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-269488