arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.05727hep-phastro-ph.HE
收藏

超新星中的类轴子粒子

Axion-like Particles from Hypernovae

Andrea Caputo, Pierluca Carenza, Giuseppe Lucente, Edoardo Vitagliano, Maurizio Giannotti, Kei Kotake, Takami Kuroda, Alessandro Mirizzi

备注：
6 pages, 3 Figures
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

最近有人指出，非常活跃的超新星（SNe）子类，如超新星和超亮超新星，可能在其核心拥有超强磁场。这样的场可能会催化弱相互作用粒子的产生，改变预测的发射率。在这里，我们考虑的情况下，类轴子粒子（ALP），并表明，预测的大规模磁场的核心有助于显着的ALP生产，通过热光子的相干转换。使用最近的国家的最先进的SN模拟，包括磁流体力学，我们发现，如果ALP有群众$m_a \sim {\mathcal O}(10)\, \rm MeV$，通过磁转换的发射率是超过两个数量级大于先前估计。此外，这些大质量ALP的辐射衰变会导致子光子到达时间的特殊延迟。因此，高统计伽马射线卫星可以潜在地发现MeV的ALP在参数空间的未探测区域，并阐明SN爆炸的磁流体力学性质。

英文摘要：

It was recently pointed out that very energetic subclasses of supernovae (SNe), like hypernovae and superluminous SNe, might host ultra-strong magnetic fields in their core. Such fields may catalyze the production of feebly interacting particles, changing the predicted emission rates. Here we consider the case of axion-like particles (ALPs) and show that the predicted large scale magnetic fields in the core contribute significantly to the ALP production, via a coherent conversion of thermal photons. Using recent state-of-the-art SN simulations including magnetohydrodynamics, we find that if ALPs have masses $m_a \sim {\mathcal O}(10)\, \rm MeV$, their emissivity via magnetic conversions is over two orders of magnitude larger than previously estimated. Moreover, the radiative decay of these massive ALPs would lead to a peculiar delay in the arrival times of the daughter photons. Therefore, high-statistics gamma-ray satellites can potentially discover MeV ALPs in an unprobed region of the parameter space and shed light on the magnetohydrodinamical nature of the SN explosion.

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。

↑