The Spectral Index of Large Scale Anisotropies in the Cosmic Microwave Background Radiation

Details The Spectral Index of Large Scale Anisotropies in the Cosmic Microwave Background Radiation The Spectral Index of Large Scale Anisotropies in the Cosmic Microwave Background Radiation

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...184.2003g&link_type=abstract

American Astronomical Society, 184th AAS Meeting, #20.03; Bulletin of the American Astronomical Society, Vol. 26, p.888

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The large angular scale anisotropy of the cosmic microwave background can often be parameterized by a spectral index, n, and a quadrupolar amplitude, Q. Applying a new statistical measure to data from the Far Infra-Red Survey (FIRS), we form a contour plot of the likelihood for cosmological models with -1 < n < 3 and 0 <= Q <= 50 muK . We find that the likelihood is maximum at (n, Q) = (1.0,19 muK ). For n = 1 the likelihood falls to half its maximum at Q ~ 14 muK and 25 muK and for Q = 19 mu K the likelihood falls to half its maximum at n ~ 0.5 and 1.4.

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