A Preliminary measurement of the Cosmic Microwave Background spectrum by the Cosmic Background Explorer (COBE) satellite
A Preliminary measurement of the Cosmic Microwave Background spectrum by the Cosmic Background Explorer (COBE) satellite
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DOI：
10.1086/185717
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发表时间：
1990-05
期刊：
影响因子：
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通讯作者：
J. Mather;E. Cheng;R. Shafer;C. Bennett;N. Boggess;E. Dwek;M. Hauser;T. Kelsall;S. Moseley;R. Silverberg
中科院分区：
文献类型：
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作者：
J. Mather;E. Cheng;R. Shafer;C. Bennett;N. Boggess;E. Dwek;M. Hauser;T. Kelsall;S. Moseley;R. Silverberg
本文介绍了COBE卫星上FIRAS仪器观测到的银河系北极附近区域1 - 20/cm背景辐射的初步光谱。光谱分辨率为1/cm。光谱与温度为2.735 +或-0.06 K的黑体很好地拟合，并且在1-20/cm的范围内与黑体的偏差小于峰值强度的1%。这些新的数据没有显示出松本等人（1988）先前在宇宙微波背景辐射中报道的亚毫米波过量的证据。进一步的分析和额外的数据，预计将提高一个数量级的黑体光谱的偏差的灵敏度。参考文献31篇。
A preliminary spectrum is presented of the background radiation between 1 and 20/cm from regions near the north Galactic pole, as observed by the FIRAS instrument on the COBE satellite. The spectral resolution is 1/cm. The spectrum is well fitted by a blackbody with a temperature of 2.735 + or - 0.06 K, and the deviation from a blackbody is less than 1 percent of the peak intensity over the range 1-20/cm. These new data show no evidence for the submillimeter excess previously reported by Matsumoto et al. (1988) in the cosmic microwave background. Further analysis and additional data are expected to improve the sensitivity to deviations from a blackbody spectrum by an order of magnitude. 31 refs.