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Title: Low-Frequency Measurements of the CMB Spectrum

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 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.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director, Office of Science
OSTI Identifier:
893048
Report Number(s):
LBL-28024
TRN: US200625%%77
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
The Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 291; Related Information: Journal Publication Date: 1985
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; RELICT RADIATION; ASTROPHYSICS; LAWRENCE BERKELEY LABORATORY

Citation Formats

Kogut, A, Bensadoun, M, De Amici, Giovanni, Levin, S, Limon, M, Smoot, George F, Sironi, G, Bersanelli, M, and Bonelli, G. Low-Frequency Measurements of the CMB Spectrum. United States: N. p., 1989. Web.
Kogut, A, Bensadoun, M, De Amici, Giovanni, Levin, S, Limon, M, Smoot, George F, Sironi, G, Bersanelli, M, & Bonelli, G. Low-Frequency Measurements of the CMB Spectrum. United States.
Kogut, A, Bensadoun, M, De Amici, Giovanni, Levin, S, Limon, M, Smoot, George F, Sironi, G, Bersanelli, M, and Bonelli, G. 1989. "Low-Frequency Measurements of the CMB Spectrum". United States. https://www.osti.gov/servlets/purl/893048.
@article{osti_893048,
title = {Low-Frequency Measurements of the CMB Spectrum},
author = {Kogut, A and Bensadoun, M and De Amici, Giovanni and Levin, S and Limon, M and Smoot, George F and Sironi, G and Bersanelli, M and Bonelli, G},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/893048}, journal = {The Astrophysical Journal Letters},
number = ,
volume = 291,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 1989},
month = {Sun Oct 01 00:00:00 EDT 1989}
}