Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...234l..83s&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 234, Dec. 1, 1979, p. L83-L86. NASA-supported research;
Astronomy and Astrophysics
Astrophysics
66
Anisotropic Media, Background Radiation, Extraterrestrial Radiation, Southern Hemisphere, Linear Polarization, Microwaves, Polarization Characteristics, Spherical Harmonics
Scientific paper
A recent airborne measurement of the large-angular-scale anisotropy in the cosmic background radiation from the Southern Hemisphere (Lima, Peru) is in essential agreement with previous measurements from the northern hemisphere. The net anisotropy from the combined data can be described by a first-order spherical harmonic (Doppler) anisotropy of amplitude 3.1 plus or minus 0.4 mK with a quadrupole component of less than 1 mK. Additional ground-based measurements of the linear polarization yield an upper limit of l mK, or one part in 3000, at 95% confidence level for the amplitudes of any spherical harmonic through third order.
Lubin Phil M.
Smoot George F.
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