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arXiv 0908.2317astro-ph.HEastro-ph.SR
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用IceCube中的中微子重建超新星反弹时间

Reconstructing the supernova bounce time with neutrinos in IceCube

Francis Halzen, Georg G. Raffelt

摘要:

对核心坍缩超新星(SN)早期中微子信号的一般模型预测表明,冰立方可以在95% CL(假设SN距离为10 kpc)时重建约+/- 3.5 ms的反弹,这与引力波探测器的重合有关。定时不确定性近似与距离平方成比例。真实的和重建的反弹时间之间的偏移量高达几毫秒取决于中微子味振荡的情况。我们的工作扩展了Pagliaroli等人最近的研究[PRL 103,031102(2009)],并证明了IceCube对来自下一个附近SN的中微子的卓越计时能力。

英文摘要:

Generic model predictions for the early neutrino signal of a core-collapse supernova (SN) imply that IceCube can reconstruct the bounce to within about +/- 3.5 ms at 95% CL (assumed SN distance 10 kpc), relevant for coincidence with gravitational-wave detectors. The timing uncertainty scales approximately with distance-squared. The offset between true and reconstructed bounce time of up to several ms depends on the neutrino flavor oscillation scenario. Our work extends the recent study of Pagliaroli et al. [PRL 103, 031102 (2009)] and demonstrates IceCube's superb timing capabilities for neutrinos from the next nearby SN.

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