宇宙物理セミナー ( 郡 和範准教授 )
概要
We consider the effects of the injections of energetic photon and electron (or positron) on the big-bang nucleosynthesis. We study the photodissociation of light elements in the early Universe those injections paying particular attention to the case that the injection energy is sub-GeV and derive upper bounds on the primordial abundances of the massive decaying particle as a function of its lifetime. We pay particular attention to the case that the injection energy is sub-GeV. We also discuss a solution of the Li7 problem in this framework.
カテゴリ
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国際会議・研究会
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コロキウム
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セミナー
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談話会・交流会