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arXiv 1811.03320astro-ph.HEhep-ph
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失败超新星中的集体中微子振荡和可探测性

Collective neutrino oscillations and detectabilities in failed supernovae

Masamichi Zaizen, Takashi Yoshida, Kohsuke Sumiyoshi, Hideyuki Umeda

摘要:

在三味多角度近似下,研究了一个球对称的超新星爆炸模拟中的集体中微子振荡。一颗失败的超新星在短时间内释放出高中微子通量,而强烈的吸积过程伴随着高电子密度,足以经历重新坍缩成黑洞。我们的结果表明,物质诱导效应完全占主导地位的中微子自相互作用效应和多角度的物质抑制发生在我们研究的所有时间快照。这些事实表明,只有MSW共振影响失败的超新星的中微子味转换和简单的光谱将在中微子探测器上观察到。我们还估计了当前和未来的中微子探测器从一个源在10千秒差距的银河系事件的中微子事件率。中微子探测的时间演化可以提供有关致密和热物质的信息,并约束中微子质量排序问题。

英文摘要:

We investigate the collective neutrino oscillations under the three flavor multi-angle approximation in a spherically symmetric simulation of failed supernovae. A failed supernova emits high neutrino fluxes in a short time, while intense accretion proceeds with high electron density enough to experience re-collapse into a black hole. Our results show that matter-induced effects completely dominate over neutrino self-interaction effects and multi-angle matter suppression occurs at all time snapshots we studied. These facts suggest us that only MSW resonances affect the neutrino flavor conversions in failed supernovae and simple spectra will be observed at neutrino detectors. We also estimate the neutrino event rate in current and future neutrino detectors from a source at 10 kpc as a Galactic event. The time evolution of neutrino detection could provide information about the dense and hot matter and constrain the neutrino mass ordering problem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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