Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...372l...1v&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 372, May 1, 1991, p. L1-L4. Research supported by Ministero della
Astronomy and Astrophysics
Astrophysics
46
Astronomical Models, Background Radiation, Baryons, Cosmic Rays, Cosmology, Dark Matter, Anisotropy, Digital Simulation, Maximum Likelihood Estimates, Microwaves, Monte Carlo Method, Polar Regions
Scientific paper
A self-consistent method is presented for comparing theoretical predictions of and observational upper limits on CMB anisotropy. New bounds on CDM cosmologies set by the UCSB South Pole experiment on the 1 deg angular scale are presented. An upper limit of 4.0 x 10 to the -5th is placed on the rms differential temperature anisotropy to a 95 percent confidence level and a power of the test beta = 55 percent. A lower limit of about 0.6/b is placed on the density parameter of cold dark matter universes with greater than about 3 percent baryon abundance and a Hubble constant of 50 km/s/Mpc, where b is the bias factor, equal to unity only if light traces mass.
Lubin Philip
Meinhold Peter
Muciaccia Pio Francesco
Silk Joseph
Vittorio Nicola
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