High-energy neutrino emission from magnetized jets of rapidly rotating protomagnetars
High-energy neutrino emission from magnetized jets of rapidly rotating protomagnetars
复制标题
快速旋转原磁体磁化射流发射的高能中微子
DOI：
10.1093/mnras/stad494
复制
发表时间：
2023
影响因子：
4.8
通讯作者：
Horiuchi, Shunsaku
中科院分区：
文献类型：
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作者：
Bhattacharya, Mukul;Carpio, Jose A.;Murase, Kohta;Horiuchi, Shunsaku
源自原磁星中央发动机的相对论喷流可以导致长时间的伽马射线爆发（GRB），并被认为是超高能宇宙射线和次级中微子的潜在来源。我们探索了这种喷流在广泛的祖细胞中的传播，从已经脱落包层的恒星到尚未脱落的超巨星。我们使用强磁化和快速旋转的原中子星（PNS）的半解析自旋下降模型来研究中心发动机特性（例如表面偶极子场强度、初始旋转周期和射流张开角度）对射流茧系统的相互作用和动力学演化的作用。通过该模型，我们根据系统参数（例如与时间相关的射流光度、注入角和恒星介质的密度剖面）来确定相对论性射流、轻度相对论性茧和准直激波的特性。我们还分析了成功射流突破的标准、相对论射流可以沉积到茧中的最大能量，以及磁化流出相对于局部不稳定性的结构稳定性。最后，我们计算了当这些磁化外流穿过它们的前身时的高能中微子发射。来自成功的GRB喷流的前体中微子不太可能被IceCube检测到，这与之前的工作结果一致。另一方面，我们发现像蓝超巨星和红超巨星这样的扩展祖体可能会产生高能中微子，并且我们估计了下一代探测器（例如IceCube-Gen2）对中微子的可探测性。
Relativistic jets originating from protomagnetar central engines can lead to long duration gamma-ray bursts (GRBs) and are considered potential sources of ultra-high-energy cosmic rays and secondary neutrinos. We explore the propagation of such jets through a broad range of progenitors, from stars which have shed their envelopes to supergiants which have not. We use a semi-analytical spin-down model for the strongly magnetized and rapidly rotating protoneutron star (PNS) to investigate the role of central engine properties such as the surface dipole field strength, initial rotation period, and jet opening angle on the interactions and dynamical evolution of the jet-cocoon system. With this model, we determine the properties of the relativistic jet, the mildly relativistic cocoon, and the collimation shock in terms of system parameters such as the time-dependent jet luminosity, injection angle, and density profile of the stellar medium. We also analyse the criteria for a successful jet breakout, the maximum energy that can be deposited into the cocoon by the relativistic jet, and structural stability of the magnetized outflow relative to local instabilities. Lastly, we compute the high-energy neutrino emission as these magnetized outflows burrow through their progenitors. Precursor neutrinos from successful GRB jets are unlikely to be detected by IceCube, which is consistent with the results of previous works. On the other hand, we find that high-energy neutrinos may be produced for extended progenitors like blue and red supergiants, and we estimate the detectability of neutrinos with next generation detectors such as IceCube-Gen2.