首页> 外文期刊>Advances in space research >Supernovae in compact star clusters as sources of high-energy cosmic rays and neutrinos
【24h】

Supernovae in compact star clusters as sources of high-energy cosmic rays and neutrinos

机译:紧凑型恒星团中的超新星是高能宇宙射线和中微子的来源

获取原文
获取原文并翻译 | 示例
       

摘要

We discuss a specific population of galactic PeVatrons which may be the source of the galactic CR component well above PeV energies. Supernovae in compact clusters of massive stars are proposed as powerful sources of CRs, neutrinos, and gamma-ray emission. Numerical simulations of non-linear CR acceleration at converging shock flows have revealed that these accelerators can provide very hard spectra of protons up to 10(16)-10(17) eV which is well above the "knee" in the all-particle CR spectrum at about 3 x 10(15) eV. We suggest that known supernova remnants interacting with stellar winds in the compact clusters of young massive stars Westerlund I and C1*1806-20 can be associated with the sources of the TeV gamma-emission detected by H.E.S.S. and may be responsible for a fraction of the high-energy neutrinos detected with the Ice Cube observatory. A recent cosmic ray (CR) composition measurement with the LOFAR array has revealed a light-mass component possibly dominating the all-particle spectrum at energies around 10(17) eV. Such a strong light component (mainly protons and helium) may require specific galactic CR sources such as supernovae interacting with compact clusters of massive stars in addition to isolated supernova remnants. (C) 2018 COSPAR. Published by Elsevier Ltd. All rights reserved.
机译:我们讨论了银河PeVatron的特定种群,这可能是远高于PeV能量的银河CR成分的来源。有人提出将大质量恒星团簇中的超新星作为CR,中微子和伽马射线发射的有力来源。会聚冲击流时非线性CR加速度的数值模拟表明,这些加速器可以提供非常硬的质子光谱,其质子范围高达10(16)-10(17)eV,远高于全能级的“拐点”。约3 x 10(15)eV的粒子CR光谱。我们建议,已知的超新星残留物与年轻的大质量恒星Westerlund I和C1 * 1806-20的紧凑星团中的恒星风相互作用可以与H.E.S.S.探测到的TeVγ辐射源有关。并可能与Ice Cube天文台观测到的一部分高能中微子有关。最近使用LOFAR阵列进行的宇宙射线(CR)成分测量显示,在约10(17)eV的能量下,光质量分量可能占全粒子光谱的主导地位。如此强的光分量(主要是质子和氦气)可能需要特定的银河CR源,例如超新星与孤立的超新星残留物以及与大质量恒星的紧密簇相互作用。 (C)2018年COSPAR。由Elsevier Ltd.出版。保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号