arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0804.2466astro-ph
收藏

被遮蔽的gamma-ray和UHECR宇宙

The obscured gamma-ray and UHECR universe

Charles D. Dermer

摘要:

俄歇观测到的60EeV以上的超高能宇宙线(UHECR)离子成簇现象和TeV耀变体γ射线谱的解释与河外背景光(EBL)的影响有关。EBL作为伽马射线的遮蔽介质和UHECR离子和质子的后处理介质,导致GZK截止。对UHECR离子的GZK能量和团簇能量之间符合的物理基础的研究表明,CNO群核子中的UHECR成分大于60 EeV。这对UHECR的来源有着有趣的影响。我们还评论了俄歇分析。

英文摘要:

Auger results on clustering of > 60 EeV ultra-high energy cosmic ray (UHECR) ions and the interpretation of the gamma-ray spectra of TeV blazars are connected by effects from the extragalactic background light (EBL). The EBL acts as an obscuring medium for gamma rays and a reprocessing medium for UHECR ions and protons, causing the GZK cutoff. The study of the physics underlying the coincidence between the GZK energy and the clustering energy of UHECR ions favors a composition of > 60 EeV UHECRs in CNO group nucleons. This has interesting implications for the sources of UHECRs. We also comment on the Auger analysis.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑