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Submillimetre Astronomy - Proceedings of the Kona Symposium on Millimeter and Submillimetre Astronomy, Held at Kona, Hawaii, October 3-6, 1988 (Paperback, Softcover reprint of the original 1st ed. 1990)
Loot Price: R5,720
Discovery Miles 57 200
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Submillimetre Astronomy - Proceedings of the Kona Symposium on Millimeter and Submillimetre Astronomy, Held at Kona, Hawaii, October 3-6, 1988 (Paperback, Softcover reprint of the original 1st ed. 1990)
Series: Astrophysics and Space Science Library, 158
Expected to ship within 10 - 15 working days
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G. M. Bernstein, M. L. Fischer, and P. L. Richards Department of
Physics, University of California Berkeley, California 94720, U. S.
A. J. B. Peterson Department of Physics, Princeton University
Princeton, New Jersey 08540, U. S. A. T. Timusk Department of
Physics, McMaster University Hamilton, Ontario L8S 4M1 , Canada
ABSTRACT. Recent measurements of the diffuse background at
millimeter wavelengths indicate no departure from a Planck spectrum
near the peak of the blackbody curve. Anisotropy measurements
indicate no structure, at the 2% level, in the recently detected
submillimeter excess. We report here the results of an April 1987
balloon flight of an instrument designed to measure the spectrum of
the cosmic background radiation from 1 mm to 3 mm. A description of
the instrument can be found in Peterson, Richards, and Timusk
(1985). Modifications were made to the apparatus and experimental
procedure in order to identify and reduce systematic errors.
Results from the latest flight indicate that two effects hamper the
interpretation of the data. These systematic effects will be
described in detail in a forthcoming publications; they are
probably responsible for the non-Planckian spectrum measured by
Woody and Richards (1981). Attempts to remove the systematic
effects from our data yield the upper limits to the CBR brightness
temperature in 4 bands from 1 mm to 3 mm. There is no evidence for
an excess of radiation near the 2. 8 K blackbody peak.
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