Measurements of the cosmic microwave background temperature at 1.47 GHz

M. Bensadoun; M. Bersanelli; G. De Amici; A. Kogut; S. M. Levin; M. Limon; G. F. Smoot; C. Witebsky

doi:10.1086/172637

Measurements of the cosmic microwave background temperature at 1.47 GHz

M. Bensadoun^*, M. Bersanelli, G. De Amici, A. Kogut, S. M. Levin, M. Limon, G. F. Smoot, C. Witebsky

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

26 Citations (Scopus)

Abstract

We have used a radio-frequency-gain total-power radiometer to measure the intensity of the cosmic microwave background (CMB) at a frequency of 1.47 GHz (20.4 cm wavelength) from White Mountain, California in 1988 September and from the South Pole, Antarctica in 1989 December. The CMB thermodynamic temperature, T_CMB, is 2.27 ± 0.25 K (68% confidence limit) measured from White Mountain and 2.26 ± 0.20 K from the South Pole site. The combined result is 2.26 ± 0.19 K. The correction for Galactic emission has been derived from scaled low-frequency maps and constitutes the main source of error. The atmospheric signal is extrapolated from our zenith scan measurements at higher frequencies. These results are consistent with our previous measurement at 1.41 GHz (Levin et al. 1988) and ∼2.5 σ from the 2.74 ± 0.01 K global average CMB temperature.

Original language	English
Pages (from-to)	1-13
Number of pages	13
Journal	Astrophysical Journal
Volume	409
Issue number	1
DOIs	https://doi.org/10.1086/172637
Publication status	Published - 1993
Externally published	Yes

Keywords

Cosmic microwave background
Cosmology: Observations

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10.1086/172637

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@article{77b038deabe64122bb2fc3ba7f00cae5,

title = "Measurements of the cosmic microwave background temperature at 1.47 GHz",

abstract = "We have used a radio-frequency-gain total-power radiometer to measure the intensity of the cosmic microwave background (CMB) at a frequency of 1.47 GHz (20.4 cm wavelength) from White Mountain, California in 1988 September and from the South Pole, Antarctica in 1989 December. The CMB thermodynamic temperature, TCMB, is 2.27 ± 0.25 K (68\% confidence limit) measured from White Mountain and 2.26 ± 0.20 K from the South Pole site. The combined result is 2.26 ± 0.19 K. The correction for Galactic emission has been derived from scaled low-frequency maps and constitutes the main source of error. The atmospheric signal is extrapolated from our zenith scan measurements at higher frequencies. These results are consistent with our previous measurement at 1.41 GHz (Levin et al. 1988) and ∼2.5 σ from the 2.74 ± 0.01 K global average CMB temperature.",

keywords = "Cosmic microwave background, Cosmology: Observations",

author = "M. Bensadoun and M. Bersanelli and \{De Amici\}, G. and A. Kogut and Levin, \{S. M.\} and M. Limon and Smoot, \{G. F.\} and C. Witebsky",

year = "1993",

doi = "10.1086/172637",

language = "English",

volume = "409",

pages = "1--13",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1",

}

TY - JOUR

T1 - Measurements of the cosmic microwave background temperature at 1.47 GHz

AU - Bensadoun, M.

AU - Bersanelli, M.

AU - De Amici, G.

AU - Kogut, A.

AU - Levin, S. M.

AU - Limon, M.

AU - Smoot, G. F.

AU - Witebsky, C.

PY - 1993

Y1 - 1993

N2 - We have used a radio-frequency-gain total-power radiometer to measure the intensity of the cosmic microwave background (CMB) at a frequency of 1.47 GHz (20.4 cm wavelength) from White Mountain, California in 1988 September and from the South Pole, Antarctica in 1989 December. The CMB thermodynamic temperature, TCMB, is 2.27 ± 0.25 K (68% confidence limit) measured from White Mountain and 2.26 ± 0.20 K from the South Pole site. The combined result is 2.26 ± 0.19 K. The correction for Galactic emission has been derived from scaled low-frequency maps and constitutes the main source of error. The atmospheric signal is extrapolated from our zenith scan measurements at higher frequencies. These results are consistent with our previous measurement at 1.41 GHz (Levin et al. 1988) and ∼2.5 σ from the 2.74 ± 0.01 K global average CMB temperature.

AB - We have used a radio-frequency-gain total-power radiometer to measure the intensity of the cosmic microwave background (CMB) at a frequency of 1.47 GHz (20.4 cm wavelength) from White Mountain, California in 1988 September and from the South Pole, Antarctica in 1989 December. The CMB thermodynamic temperature, TCMB, is 2.27 ± 0.25 K (68% confidence limit) measured from White Mountain and 2.26 ± 0.20 K from the South Pole site. The combined result is 2.26 ± 0.19 K. The correction for Galactic emission has been derived from scaled low-frequency maps and constitutes the main source of error. The atmospheric signal is extrapolated from our zenith scan measurements at higher frequencies. These results are consistent with our previous measurement at 1.41 GHz (Levin et al. 1988) and ∼2.5 σ from the 2.74 ± 0.01 K global average CMB temperature.

KW - Cosmic microwave background

KW - Cosmology: Observations

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:A1993LB03800001

UR - https://openalex.org/W2087657179

UR - https://www.scopus.com/pages/publications/12044254667

U2 - 10.1086/172637

DO - 10.1086/172637

M3 - Journal Article

SN - 0004-637X

VL - 409

SP - 1

EP - 13

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

Measurements of the cosmic microwave background temperature at 1.47 GHz

Abstract

Keywords

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