K-9 M-80 号機によるサブミリ波宇宙背景放射光の観測

概要

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The diffuse brightness of the sky has been measured in six submillimeter passbands, using liquid herium cooled absolute radiometer onboard the sounding rocket K-9M-80. The flux measured at 1160μm is in good agreement with the average of longer wavelength measurements of thhe cosmic background radiation. The fluxes measured at 709 and 481μm decreases rapidly towards shorter wavelength, but correspond to significantly higher temperature. The flux measured at 262μm is even lower than at 481μm. These data significantly constrain cosmological model which postulate redshifted dust emission, inverse compton scattering, or the decay of massive particles in the early universe. Data at 262,137 and 102μm are consistent with emission from interstellar dust at high galactic latitude.
宇宙航空研究開発機構の論文