河外星际尘埃的亚毫米波发射

RADIATION FROM COLD GRAINS EXISTING IN EXTRAGALAXIES ON CMB

本文借助于观测到的大、小麦哲伦云的星际尘埃辐射，估计总星系的冷尘埃辐射对微波背景辐射的影响。结果表明：河外星际冷尘埃辐射强度强烈地依赖于宇宙减速因子，在宇宙背景探测者（ＣＯＢＤ）的观测结果的限制下，在合理的光深范围内，宇宙减速因子趋于１。

In this paper the effect of radiation from cold grains existing in extragalaxies on the cosmicmicrowave background is established.The results show that such interstellar rediation reliesstrongly on the cosmic deceleration parameter.As oberved by COBE,in the range of areasonable value of depth from dust,the cosmic deceleration parameter tends to be unity.