The dipole anisotropy of the cosmic microwave background at a wavelength of 1.6 CM

Details The dipole anisotropy of the cosmic microwave background at a wavelength of 1.6 CM The dipole anisotropy of the cosmic microwave background at a wavelength of 1.6 CM

Nov 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978phdt.........8c&link_type=abstract

Ph.D. Thesis Princeton Univ., NJ.

Computer Science

6

Anisotropy, Background Radiation, Cosmic Rays, Microwaves, Balloon-Borne Instruments, Data Acquisition, Dipoles, Radiometers

Scientific paper

A Dicke-switched radiometer operating at 1.6 centimeters wavelength was built to measure this anisotropy. The radiometer employed two antennas pointing 90 degrees apart. In order to measure the polar component of the anisotropy, the radiometer was flown from a balloon. The entire radiometer was rotated about a vertical axis once per minute so that instrumentation offsets could be distinguished from the real anisotropy signal. Eight hours of data were obtained in a flight on the night of May 10-11, 1975. Corrections were applied to the data for the galactic background and emission by discrete sources. The corrected data are consistent with a dipole anisotropy of peak amplitude 2.9 + or - 0l7 milliKelvin (standard error) in the direction 12.3 superscript h + or - 1.4 superscript h right ascension and - 21 degs + or - 21 degs declination.

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