Low-Frequency Measurements of the CMB Spectrum
Journal Article
·
· The Astrophysical Journal Letters
OSTI ID:893048
As part of an extended program to characterize the spectrum of the cosmic microwave background (CMB) at low frequencies, we have performed multiple measurements from a high-altitude site in California. On average, these measurements suggest a CMB temperature slightly lower than measurements at higher frequencies. Atmospheric conditions and the encroachment of civilization are now significant limitations from our present observing site. In November 1989, we will make new measurements from the South Pole Amundsen-Scott Station at frequencies 0.82, 1.5, 2.5, 3.8, 7.5, and 90 GHz. We discuss recent measurements and indicate improvements possible from a polar observing site.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director, Office of Science
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 893048
- Report Number(s):
- LBL-28024; TRN: US200625%%77
- Journal Information:
- The Astrophysical Journal Letters, Vol. 291; Related Information: Journal Publication Date: 1985
- Country of Publication:
- United States
- Language:
- English
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