Submillimeter Spectrum of the Cosmic Background Radiation

  • Toshio Matsumoto
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUH, volume 8)


Recent observations of the spectrum of the 3K cosmic background radiation (CBR) indicate that the CBR spectrum is consistent with a blackbody spectrum of T = 2.74±0.02K (Smoot et al. 1987). These measurements, however, were carried out in the Rayleigh-Jeans part of the spectrum, while theories predict spectral distortion in the Wien part. Therefore, we tried to observe the submillimeter spectrum of the CBR with a liq. He cooled radiometer onboard a sounding rocket. The experiment was a collaboration between Nagoya University and University of California, Berkeley.


Cosmic Background Radiation Wavelength Channel Blackbody Spectrum Small Systematic Error Isotropic Emission 
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Copyright information

© International Astronomical Union 1989

Authors and Affiliations

  • Toshio Matsumoto
    • 1
  1. 1.Department of AstrophysicsNagoya UniversityNagoyaJapan

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