First Detection of sub-PeV Diffuse Gamma Rays from the Galactic Disk: Evidence for Ubiquitous Galactic Cosmic Rays beyond PeV Energies
First Detection of sub-PeV Diffuse Gamma Rays from the Galactic Disk: Evidence for Ubiquitous Galactic Cosmic Rays beyond PeV Energies
复制标题
首次探测到来自银盘的亚 PeV 漫射伽马射线：超出 PeV 能量的银河宇宙射线无处不在的证据
DOI：
10.1103/physrevlett.126.141101
复制
发表时间：
2021-04-05
影响因子：
8.6
通讯作者：
Zhou, X. X.
中科院分区：
文献类型：
--
作者：
Amenomori, M.;Bao, Y. W.;Zhou, X. X.
We report, for the first time, the long-awaited detection of diffuse gamma rays with energies between 100 TeV and 1 PeV in the Galactic disk. Particularly, all gamma rays above 398 TeV are observed apart from known TeV gamma-ray sources and compatible with expectations from the hadronic emission scenario in which gamma rays originate from the decay of pi(0)'s produced through the interaction of protons with the interstellar medium in the Galaxy. This is strong evidence that cosmic rays are accelerated beyond PeV energies in our Galaxy and spread over the Galactic disk.
