A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND TEMPERATURE AT 7.5 GHZ

被引：21

作者：

LEVIN, S

BENSADOUN, M

BERSANELLI, M

DEAMICI, G

KOGUT, A

LIMON, M

SMOOT, G

机构：

[1] LAWRENCE BERKELEY LAB, SPACE SCI LAB, BERKELEY, CA 94720 USA

[2] LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA

[3] NASA, GODDARD SPACE FLIGHT CTR, ASTRON & SOLAR PHYS LAB, GREENBELT, MD 20771 USA

[4] CNR, IFC, I-20133 MILAN, ITALY

来源：

ASTROPHYSICAL JOURNAL | 1992年 / 396卷 / 01期

关键词：

COSMIC MICROWAVE BACKGROUND;

D O I：

10.1086/171692

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have measured the temperature of the cosmic microwave background (CMB) radiation at a frequency of 7.5 GHz (4 cm wavelength), obtaining a brightness temperature of T(CMB) = 2.70 +/- 0.08 K (68% confidence level). The measurement was made from a site near the geographical South Pole during the austral spring of 1989 and was part of an international collaboration to measure the CMB spectrum at low frequencies with a variety of radiometers from several different sites. This recent result is in agreement with our 1988 measurement at the same frequency, which was made from a different site with significantly different systematic errors. The combined result of the 1988 and 1989 measurements is 2.64 +/- 0.06 K.

引用

页码：3 / 9

页数：7

共 11 条

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BENSADOUN M, 1992, UNPUB REV SCI INSTR

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DANESE I, 1982, ASTRON ASTROPHYS, V107, P39

[3] MEASUREMENT OF THE INTENSITY OF THE COSMIC BACKGROUND-RADIATION AT 3.7 GHZ [J].