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arXiv 1301.2437astro-ph.GAastro-ph.HE
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超新星遗迹附近cosmic ray相互作用扩散中微子通量的预测

Prediction of the diffuse neutrino flux from cosmic ray interactions near Supernova Remnants

Matthias Mandelartz, Julia Becker Tjus

摘要:

在本文中,我们提出了高能中微子光谱从21银河系超新星遗迹(SNRs),来自γ射线测量GeV-TeV范围。我们发现,只有最强的源,即G40.5-0.5在北部和船帆座在南部的小可以检测到的IceCube或KM 3 NeT,分别作为单点源。这是第一次,也可以通过应用观测到的伽马射线发射和无线电信号之间的相关性来导出扩散信号。格林星表中列出的234颗超新星遗迹的射电数据表明,与迄今为止已解决的来源相比,总的扩散中微子通量大约高出2.5倍。我们表明,在10 TeV以上的能量的信号实际上可以成为可比的扩散中微子通量分量的相互作用在星际介质。最近,IceCube合作宣布探测到天体物理高能中微子的第一个扩散信号。由于统计数据不多,定向信息目前无法明确揭示来源的性质。许多事件来自银河系中心附近,其中一个主要问题是,是否至少有一部分信号可以是银河系的性质。在本文中,我们表明,从良好解决信噪比的扩散通量是至少低于所观察到的通量的20倍。

英文摘要:

In this paper, we present high-energy neutrino spectra from 21 Galactic supernova remnants (SNRs), derived from gamma-ray measurements in the GeV-TeV range. We find that only the strongest sources, i.e. G40.5-0.5 in the north and Vela Junior in the south could be detected as single point sources by IceCube or KM3NeT, respectively. For the first time, it is also possible to derive a diffuse signal by applying the observed correlation between gamma-ray emission and radio signal. Radio data from 234 supernova remnants listed in Green's catalog are used to show that the total diffuse neutrino flux is approximately a factor of 2.5 higher compared to the sources that are resolved so far. We show that the signal at above 10 TeV energies can actually become comparable to the diffuse neutrino flux component from interactions in the interstellar medium. Recently, the IceCube collaboration announced the detection of a first diffuse signal of astrophysical high-energy neutrinos. Directional information cannot unambiguously reveal the nature of the sources at this point due to low statistics. A number of events come from close to the Galactic center and one of the main questions is whether at least a part of the signal can be of Galactic nature. In this paper, we show that the diffuse flux from well-resolved SNRs is at least a factor of 20 below the observed flux.

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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