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arXiv 0807.4151astro-ph
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gamma ray观测如何精确地限制超新星遗迹的中微子发射?

How precisely neutrino emission from supernova remnants can be constrained by gamma ray observations?

F. L. Villante, F. Vissani

摘要:

我们提出了一个概念上和计算上简单的方法来评估中微子发射的超新星遗迹使用观测到的γ射线谱。所提出的方法不需要任何初步的参数化的伽马射线通量的伽马射线数据可以用作输入。通过这种方式,我们能够很容易地传播观测误差,并了解中微子通量和中微子望远镜中的信号如何受到伽马射线数据的约束。我们讨论了理论和系统不确定性的各种可能来源(例如,中微子振荡参数、强子建模等),获得我们计算准确性的估计。此外,我们将我们的方法应用于超新星遗迹RX J1713.7-3946,表明中微子发射受到H.E.S.S.伽马射线数据:事实上,我们预测的准确性受到理论不确定性的限制。如果未来中微子望远镜的探测阈值约为1 TeV,那么RX J1713.7-3946的中微子可以在千米^2年量级的曝光量下被探测到。

英文摘要:

We propose a conceptually and computationally simple method to evaluate the neutrinos emitted by supernova remnants using the observed gamma-ray spectrum. The proposed method does not require any preliminary parametrization of the gamma ray flux; the gamma ray data can be used as an input. In this way, we are able to propagate easily the observational errors and to understand how well the neutrino flux and the signal in neutrino telescopes can be constrained by gamma-ray data. We discuss the various possible sources of theoretical and systematical uncertainties (e.g., neutrino oscillation parameters, hadronic modeling, etc.), obtaining an estimate of the accuracy of our calculation. Furthermore, we apply our approach to the supernova remnant RX J1713.7-3946, showing that neutrino emission is very-well constrained by the H.E.S.S. gamma-ray data: indeed, the accuracy of our prediction is limited by theoretical uncertainties. Neutrinos from RX J1713.7-3946 can be detected with an exposure of the order km^2 year, provided that the detection threshold in future neutrino telescopes will be equal to about 1 TeV.

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