arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.04328astro-ph.HE
收藏

Cosmic Ray核光衰变产生的甚高能反中微子

Very High Energy Antineutrinos from Photo-disintegration of Cosmic Ray Nuclei

Nayantara Gupta

摘要:

宇宙线核在星光下的光致衰变导致次级反中微子的产生。我们假定银道面附近的高能宇宙线核的通量与地球附近观测到的通量相同,并计算了它们光致蜕变产生的反中微子通量。冰立方探测器测量了TeV-PeV能量范围内的中微子/反中微子通量。我们计算出的次级反中微子通量在10-100 TeV的能量范围内被发现是少得多相比,由冰立方合作检测到的通量。河外介质中辐射场强度的上限远低于银心附近。如果我们把我们的形式主义推广到河外介质,由于宇宙线的通量很低,高能宇宙线重核的光致衰变的贡献仍然是微不足道的。

英文摘要:

The photo-disintegration of cosmic ray nuclei by starlight leads to the production of secondary antineutrinos. We have assumed that the flux of the ultrahigh energy cosmic ray nuclei near the Galactic plane region is the same as that observed near the earth and calculated the antineutrino flux produced from their photo-disintegration. The IceCube detector has measured the neutrino/antineutrino flux in the TeV-PeV energy range. Our calculated secondary antineutrino flux in the energy range of 10-100 TeV is found to be much less compared to the flux detected by the IceCube collaboration. The upper limit on the intensity of the radiation field in the extragalactic medium is much lower than that near the Galactic center. If we extend our formalism to the extragalactic medium the contribution from the photo-disintegration of ultrahigh energy cosmic ray heavy nuclei remains insignificant due to their very low 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。

↑