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arXiv 2108.02863astro-ph.HE
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壳型SNR的GeV到TeV视图

A GeV to TeV view of shell-type SNRs

Henrike Fleischhack, the HAWC collaboration, the Fermi-LAT collaboration

摘要:

超新星遗迹(SNRs)壳层的激波加速被假设为产生大量银河宇宙射线的机制,可能高达PeV的能量。一些信噪比已经被证明可以将宇宙射线加速到TeV能量或更高。但是,哪些SNRs确实是质子和原子核的有效加速器呢?它们能有效加速粒子的最大能量是多少?非热辐射的测量,特别是在伽马射线领域,是回答这些问题的关键。高海拔水切伦科夫(HAWC)天文台,测量北部TeV伽马射线天空,是目前VHE(甚高能量,>100 GeV)范围内最灵敏的宽视场测量仪器,并记录了五年多的数据。费米卫星上的大面积望远镜(LAT)已经测量了十多年的GeV伽马射线天空。结合这两种仪器的测量,可以研究SNR在许多数量级能量上的伽马射线发射。在这次演讲中,我将展示VHE伽马射线发射的测量费米-LAT探测SNRs与HAWC天文台。

英文摘要:

Shock acceleration by the shells of supernova remnants (SNRs) has been hypothesized to be the mechanism that produces the bulk of Galactic Cosmic Rays, possibly up to PeV energies. Some SNRs have been shown to accelerate cosmic rays to TeV energies and above. But which SNRs are indeed efficient accelerators of protons and nuclei? And what is the maximum energy up to which they can efficiently accelerate particles? Measurements of non-thermal emission, especially in the gamma-ray regime, are essential to answer these questions. The High-Altitude Water Cherenkov (HAWC) observatory, surveying the northern TeV gamma-ray sky, is currently the most sensitive wide field-of-view survey instrument in the VHE (very-high-energy, >100 GeV) range and has recorded more than five years of data. The Large Area Telescope (LAT) onboard the Fermi satellite has been surveying the GeV gamma-ray sky for more than ten years. Combining measurements from both instruments allows the study of gamma-ray emission from SNRs over many orders of magnitude in energy. In this presentation, I will show measurements of VHE gamma-ray emission from Fermi-LAT-detected SNRs with the HAWC Observatory.

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。

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