宇宙铁丰度

IF 1.1 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2023-10-03 DOI:10.1134/S1063773723050018
N. N. Chugai
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引用次数: 0

摘要

我探索了估算重子物质中当前铁丰度上限的可能性,在该上限下,迄今为止宇宙中合成的Ni衰变产生的伽马射线背景与观测到的MeV伽马射线背景相冲突。我通过考虑超新星喷出物中的伽马射线散射和吸收,计算了来自SNe Ia和SNe II的伽马射线背景的亮度。如果重子物质中的铁丰度小于太阳的15\({\%}\),则伽马射线背景的模型亮度与观测到的MeV伽马射线背景一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Cosmic Abundance of Iron

I explore the possibility of estimating an upper limit for the present-day iron abundance in the baryonic matter at which the gamma-ray background from the decay of \({}^{56}\)Ni synthesized in the Universe to date comes into conflict with the observed MeV gamma-ray background. I calculate the brightness of the gamma-ray background from SNe Ia and SNe II by taking into account the gamma-ray scattering and absorption in supernova ejecta. The model brightness of the gamma-ray background is shown to be consistent with the observed MeV gamma-ray background if the iron abundance in the baryonic matter is less than 15\({\%}\) of the solar one.

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来源期刊
CiteScore
1.70
自引率
22.20%
发文量
0
审稿时长
6-12 weeks
期刊介绍: Astronomy Letters is an international peer reviewed journal that publishes the results of original research on all aspects of modern astronomy and astrophysics including high energy astrophysics, cosmology, space astronomy, theoretical astrophysics, radio astronomy, extragalactic astronomy, stellar astronomy, and investigation of the Solar system.
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