Neutral-pion-decay gamma rays from the galaxy and the interstellar gas content
Neutral-pion-decay gamma rays from the galaxy and the interstellar gas content
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来自星系的中性π介子衰变伽马射线和星际气体含量
DOI:
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发表时间:
1973
期刊:
影响因子:
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通讯作者:
F. Stecker
中科院分区:
文献类型:
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作者:
F. Stecker
Knowledge of the total gamma-ray production rate per H atom from the decay of neutral pions produced in interstellar cosmic-ray interactions is essential for determining the possible amount of interstellar H2. This production rate is recalculated here using the latest accelerator data on neutral pion production in p-p interactions up to about 1500 GeV. A simple but accurate approximation used here resolves the past disagreement over the magnitude of this rate. An upper limit is obtained of (1.51 plus or minus 0.23) times 10 to the -25th power/sec, consistent with the observed upper limit of 1.6 times 10 to the -25th power/sec.