Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987sfp...........l&link_type=abstract
Submitted for publication
Astronomy and Astrophysics
Astronomy
Anisotropy, Background Radiation, Galactic Radiation, Interstellar Radiation, Millimeter Waves, Balloon Flight, Dipoles, Quadrupoles, Sky Surveys (Astronomy)
Scientific paper
Data is presented from a series of balloon flights in both hemispheres to measure the large scale anisotropy of the 3 mm wavelength. The data cover 85 percent of the sky to a sensitivity of 0.7 mK per 7 degrees field of view. The instrument is sufficiently sensitive to resolve the dipole in real time as the gondola rotates. The motion of the Earth around the Sun has been seen in flights separated by six months. A 90 percent confidience level upper limit of 7 x 10 to the -5 power is obtained for a quadrupole component. Galactic contamination is very small with less than 0.1 mK contribution to the dipole and quadrupole. When compared to other dipole measurements at different wavelengths, the data can be useful in determining the temperature or deviation from the blackbody of the radiation.
Lubin Philip
Neto Thyrso Villela
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