Low-frequency measurements of the CMB (cosmic microwave background) spectrum
Description/Abstract
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 Amnudsen-Scott Station at frequencies 0.82 1.5, 2.5, 3.8, 7.5, and 90 GHz. We discuss recent measurements and indicate improvements from a polar observing site. 11 refs., 2 figs.
| Creator/Author: | Kogut, A. ; Bensadoun, M. ; De Amici, G. ; Levin, S. ; Limon, M. ; Smoot, G. (Lawrence Berkeley Lab., CA (USA)) ; Sironi, G. (Milan Univ. (Italy). Dipt. di Fisica) ; Bersanelli, M. ; Bonelli, G. (Consiglio Nazionale delle Ricerche, Milan (Italy)) |
|---|---|
| Publication Date: | 1989 Oct 01 |
| OSTI Identifier: | OSTI ID: 6830781; Legacy ID: DE90011589 |
| Report Number(s): | LBL-28024; CONF-8906234--2 |
| DOE Contract Number: | AC03-76SF00098 |
| Other Number(s): | Other: ON: DE90011589; CNN: DPP-8716548 |
| Resource Type: | Conference |
| Specific Type: | Technical Report |
| Resource Relation: | Conference: Workshop on astrophysics in Antarctica, Newark, DE (USA), 8-10 Jun 1989 |
| Research Org: | Lawrence Berkeley Lab., CA (USA) |
| Sponsoring Org: | DOE/ER; NSF |
| Subject: | 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 47 OTHER INSTRUMENTATION; COSMIC RADIATION; MEASURING METHODS; BACKGROUND RADIATION; FREQUENCY DEPENDENCE; MICROWAVE RADIATION; SPECTRA; TEMPERATURE DEPENDENCE; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; RADIATIONS |
| Related Subject: | Astrophysics; Cosmology; Cosmic Radiation |
| Country of Publication: | United States |
| Language: | English |
| Format: | Size: Pages: (5 p) |
| Availability: | NTIS, PC A02/MF A01 - OSTI; GPO Dep. |
| Update Date: | 2008 Feb 08 |
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