Statistics – Computation
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...391l..49b&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 391, no. 2, June 1, 1992, p. L49-L52. Research supported by NASA
Statistics
Computation
28
Microwaves, Relic Radiation, Astronomical Models, Computational Astrophysics, Milky Way Galaxy, Northern Sky, Sky Surveys (Astronomy)
Scientific paper
The Northern Hemisphere data from the 19.2 GHz full sky survey are analyzed to place limits on the magnitude of Gaussian fluctuations in the cosmic microwave background implied by a variety of correlation functions. Included among the models tested are the monochromatic and Gaussian-shaped families, and those with power-law spectra for n values between -2 and 1. An upper bound is placed on the quadrupole anisotropy of Delta T/T less than 3.2 x 10 exp -5 rms, and an upper bound on scale-invariant (n = 1) fluctuations of a2 less than 4.5 x 10 exp -5 (95 percent confidence level). There is significant contamination of these data from Galactic emission, and improvement of the modeling of the Galaxy could yield a significant reduction of these upper bounds.
Boughn Stephen P.
Cheng Edward S.
Cottingham David A.
Fixsen Dale J.
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