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arXiv 1801.09062astro-ph.HEphysics.data-an
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精确定位嵌入噪声中的低能中微子的天体物理爆发

Pinpointing astrophysical bursts of low-energy neutrinos embedded into the noise

C. Casentini, G. Pagliaroli, C. Vigorito, V. Fafone

摘要:

我们提出了一种新的方法,以增加识别脉冲天体物理爆发的低能中微子的概率。所提出的方法利用天体物理爆发和背景波动之间的时间结构差异,它使我们能够精确定位微弱的信号,否则不太可能被检测到。相对于先前的搜索策略,该方法大大降低了错误识别概率,例如,对于超级神冈,该降低是在$D\sim 200$ kpc的距离内的$\sim 9$的因子,而不降低检测效率。此外,我们将所提出的方法扩展到一个网络的不同的检测器,我们表明,Kamland $\&$ LVD的背景减少提高了一个因素$\sim 20$的水平$D\sim75$千分之一秒。

英文摘要:

We propose a novel method to increase the probability of identifying impulsive astrophysical bursts of low-energy neutrinos. The proposed approach exploits the temporal structure differences between astrophysical bursts and background fluctuations and it allows us to pinpoint weak signals otherwise unlikely to be detected. With respect to previous search strategies, this method strongly reduces the misidentification probability, e.g. for Super Kamiokande this reduction is a factor of $\sim 9$ within a distance of $D\sim 200$ kpc without decreasing the detection efficiency. In addition, we extend the proposed method to a network of different detectors and we show that the Kamland $\&$ LVD background reduction is improved by a factor $\sim 20$ up to an horizon of $D\sim75$ kpc.

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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