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arXiv 0801.0991astro-ph
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超高能中微子的声学探测

The Acoustic Detection of Ultra High Energy Neutrinos

J. Perkin

摘要:

已尝试参数化EeV中微子在海洋中相互作用引起的粒子级联的热声发射。了解这种事件的特征辐射使我们能够预测分布在公里级阵列中的水声传感器观察到的压力脉冲。我们发现,为了观测超高能宇宙射线在宇宙微波背景光子上的衰减所预测的中微子通量,需要包括数千立方公里的探测器,每立方公里至少有100个水听器。这种阵列的压力阈值必须在5-10 mPa的范围内,并且所述探测器必须运行五年或更长时间。此外,定性分析的第一个声学数据记录的罗纳水听器阵列的西北海岸的苏格兰报告。

英文摘要:

Attempts have been made to parameterise the thermoacoustic emission of particle cascades induced by EeV neutrinos interacting in the sea. Understanding the characteristic radiation from such an event allows us to predict the pressure pulse observed by underwater acoustic sensors distributed in kilometre scale arrays. We find that detectors encompassing thousands of cubic kilometres are required, with a minimum of 100 hydrophones per kilometre cubed, in order to observe the flux of neutrinos predicted by the attenuation of ultra high energy cosmic rays on cosmic microwave background photons. The pressure threshold of such an array must be in the range 5-10 mPa and the said detector will have to operate for five years or more. Additionally a qualitative analysis of the first acoustic data recorded by the Rona hydrophone array off the north-west coast of Scotland is reported.

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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