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arXiv 0811.1070astro-ph
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UHE中微子探测的月球切伦科夫技术的方向依赖性

The Directional Dependence of the Lunar Cherenkov Technique for UHE Neutrino Detection

C. W. James, R. J. Protheroe

摘要:

LUNASKA(月球UHE中微子天体物理学与平方公里阵列)项目是一个理论和实验项目,为下一代巨型射电望远镜阵列开发月球切伦科夫技术。这一贡献提出了我们的UHE中微子探测技术的方向依赖性的模拟结果。特别是,这些表明,瞬时灵敏度和时间积分限制从月球切伦科夫实验,如在帕克斯,戈德斯通,卡利亚津和ATCA是高度各向异性的。我们研究了这些或其他实验尚未探测到的天空区域,并提出了SKA未来实验的预期天空覆盖范围。我们的研究结果表明,如何通过选择适当的观测日期和天线波束指向位置,月球切伦科夫观测的UHE粒子的潜在天体物理源的灵敏度可能会最大化。

英文摘要:

The LUNASKA (Lunar UHE Neutrino Astrophysics with the Square Kilometre Array) project is a theoretical and experimental project developing the lunar Cherenkov technique for the next generation of giant radio-telescope arrays. This contribution presents our simulation results on the directional dependence of the technique for UHE neutrino detection. In particular, these indicate that both the instantaneous sensitivities and time-integrated limits from lunar Cherenkov experiments such as those at Parkes, Goldstone, Kalyazin and ATCA are highly anisotropic. We study the regions of the sky which have not been probed by either these or other experiments, and present the expected sky coverage of future experiments with the SKA. Our results show how the sensitivity of Lunar Cherenkov observations to potential astrophysical sources of UHE particles may be maximised by choosing appropriate observations dates and antenna-beam pointing positions.

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