Estimates of Cosmological Parameters Using the CMB Angular Power Spectrum of ACBAR

Details Estimates of Cosmological Parameters Using the CMB Angular Power Spectrum of ACBAR Estimates of Cosmological Parameters Using the CMB Angular Power Spectrum of ACBAR

2002-12-23

arxiv.org/abs/astro-ph/0212517v2

Astrophys.J. 599 (2003) 773-785

Astronomy and Astrophysics

Astrophysics

18 pages, 8 figures, minor grammatical corrections, as submitted to ApJ

Scientific paper

10.1086/379539

We report an investigation of cosmological parameters based on the measurements of anisotropy in the cosmic microwave background radiation (CMB) made by ACBAR. We use the ACBAR data in concert with other recent CMB measurements to derive Bayesian estimates of parameters in inflation-motivated adiabatic cold dark matter models. We apply a series of additional cosmological constraints on the shape and amplitude of the density power spectrum, the Hubble parameter and from supernovae to further refine our parameter estimates. Previous estimates of parameters are confirmed, with sensitive measurements of the power spectrum now ranging from \ell \sim 3 to 2800. Comparing individual best model fits, we find that the addition of \Omega_\Lambda as a parameter dramatically improves the fits. We also use the high-\ell data of ACBAR, along with similar data from CBI and BIMA, to investigate potential secondary anisotropies from the Sunyaev-Zeldovich effect. We show that the results from the three experiments are consistent under this interpretation, and use the data, combined and individually, to estimate \sigma_8 from the Sunyaev-Zeldovich component.

Affiliated with

Also associated with

No associations

Rating

Estimates of Cosmological Parameters Using the CMB Angular Power Spectrum of ACBAR 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 Estimates of Cosmological Parameters Using the CMB Angular Power Spectrum of ACBAR, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Estimates of Cosmological Parameters Using the CMB Angular Power Spectrum of ACBAR will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-487199