A millimeter-wave anisotropy experiment (MAX) to search for anisotropy in the cosmic background radiation on medium angular scales

Details A millimeter-wave anisotropy experiment (MAX) to search for anisotropy in the cosmic background radiation on medium angular scales A millimeter-wave anisotropy experiment (MAX) to search for anisotropy in the cosmic background radiation on medium angular scales

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..222..123f&link_type=abstract

In: After the first three minutes; Proceedings of the 1st Astrophysics Workshop, Univ. of Maryland, College Park, Oct. 15-17, 19

Astronomy and Astrophysics

Astrophysics

2

Anisotropy, Cosmology, Millimeter Waves, Relic Radiation, Balloon-Borne Instruments, Dark Matter, Milky Way Galaxy, Spectral Emission

Scientific paper

We report preliminary results from two balloon flights of a millimeter-wave telescope designed to measure anisotropy in the cosmic microwave background (CMB) on angular scales from 0.3 to 3 degrees. The receiver used in the first flight, in November 1989, was a dichroic, He-3-cooled bolometric photometer with passbands centered at 3, 6, 9, and 12/cm. The second flight, in July 1990, employed improved bolometric detectors. The 3/cm band was removed in order to increase the efficiency of the remaining bands. Preliminary analysis of the data gives a factor of 3 improvement in sensitivity over the first flight in the 6/cm band. Future plans include a new receiver to provide an additional factor of 5 improvement in sensitivity and a new balloon-borne telescope which is optimized for low-background bolometric detectors at millimeter wavelengths.

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