Revised Predictions of Neutrino Fluxes from Pulsar Wind Nebulae
Revised Predictions of Neutrino Fluxes from Pulsar Wind Nebulae
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DOI：
10.3847/1538-4357/836/2/159
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发表时间：
2016-05
期刊：
影响因子：
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通讯作者：
I. Palma;D. Guetta;E. Amato
中科院分区：
文献类型：
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作者：
I. Palma;D. Guetta;E. Amato
在过去的十年中，在TeV波段探测到了几个脉冲星风星云（PWN）。TeV辐射通常被解释为纯轻子的情况，但这通常需要星云中的磁场远低于均分值，以及假设目标辐射在红外频率上的密度增加。在这项工作中，我们考虑的可能性，除了相对论电子和正电子，相对论强子也存在于这些星云。假设一些TeV的光子是强子起源的，我们计算了100 - 100 TeV中微子的相关通量。我们使用IceCube非检测对可能由强子贡献的TeV光子的比例进行限制，并估计可以从ANTARES和KM 3 Net中预期的中微子事件的数量。
Several pulsar wind nebulae (PWN) have been detected in the TeV band in the last decade. TeV emission is typically interpreted in a purely leptonic scenario, but this often requires that the magnetic field in the nebula be much lower than the equipartition value, as well as the assumption of an enhanced density of target radiation at IR frequencies. In this work, we consider the possibility that, in addition to the relativistic electrons and positrons, relativistic hadrons are also present in these nebulae. Assuming that some of the emitted TeV photons are of hadronic origin, we compute the associated flux of ∼ 1 – 100 TeV neutrinos. We use IceCube non-detection to put constraints on the fraction of TeV photons that might be contributed by hadrons and estimate the number of neutrino events that can be expected from these sources in ANTARES and KM3Net.