利用大气中微子振荡探测地球内部的IceCube升级装置的灵敏度估算
Estimating the sensitivity of the IceCube Upgrade to probe the interior of the Earth using atmospheric neutrino oscillations
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中文总结 AI 辅助
本研究估算IceCube升级装置利用大气中微子振荡探测地球内部的灵敏度,该装置可观测地球物质效应,有望估算地球质量、验证密度非均匀性,其结果可补充地震与引力测量。
中文摘要 AI 辅助
IceCube升级装置是IceCube中微子天文台的密集仪器核心区域,于2025-2026年极区部署,它将降低探测器的能量阈值并提升多GeV大气中微子的整体重建能力,进而增强其对穿过地球深部时的地球物质效应的灵敏度。本研究阐述了IceCube升级装置观测地球物质效应对大气中微子的影响的潜力,并利用这些观测结果估算探测器探测初步参考地球模型(PREM)关键特征的灵敏度。我们强调IceCube升级装置具备估算地球质量的能力,可验证地球内部物质密度的非均匀分布,还会结合地球质量和转动惯量的约束,估算IceCube升级装置测量地球各层相关密度的灵敏度。基于中微子的研究结果将独立于并补充地震和引力测量的结果。
英文摘要
The IceCube Upgrade is a densely instrumented central region of the IceCube Neutrino Observatory, deployed during the 2025-26 polar season. It will reduce the detector's energy threshold and improve overall reconstruction capabilities for multi-GeV atmospheric neutrinos, which in turn enhance their sensitivity to Earth matter effects as they traverse through the deep Earth. In this study, we describe the potential of the IceCube Upgrade to observe Earth matter effects on atmospheric neutrinos and estimate the detector's sensitivity to probe key features of the Preliminary Reference Earth Model by utilizing these observations. We highlight the IceCube Upgrade's capability to estimate the mass of the Earth and verify the non-homogeneous distribution of matter density within the Earth. We also estimate the IceCube Upgrade sensitivity to measure the correlated densities of the Earth layers while incorporating constraints from the mass and moment of inertia of the Earth. Neutrino-based results would be independent and complementary to the seismic and gravitational measurements.