论文标题
关于LGRB祖细胞：热生产中微子的方法
On LGRB progenitors: an approach from thermally-produced neutrinos
论文作者
论文摘要
伽马射线爆发（GRB）是宇宙中最激烈的电磁（EM）来源。 Long GRB（LGRB）对应于这些事件，并以典型的迅速发射超过几秒钟。通常假定它们是在中央紧凑型物体发动机内的非常巨大的恒星中发生的，该恒星可以是黑洞（BH）或快速旋转的高磁性中子星（NS）。然而，定义独特模型的最具挑战性的方面之一是，祖先最初仍然隐藏了直接观察。在这项工作中，我们研究了两个GRB祖细胞中热产生的中微子特性的演变，以提供替代溶液。我们考虑祖细胞和火球场景的特征，以计算三种混合型混合体内的振荡概率。然后，我们获得了预期的中微子比率，我们还估计了这些来源的事件数量，这些事件数量可以在将来可以在未来的Hyper-Kamiokande（Hyper-K）检测器中检测到，考虑到了先前观察到的GRB的样本，并具有明显的磁力生产迹象。我们的发现表明，检查预测的中微子速率会产生另一种机制，以确定与这些事件相关的祖细胞的类型。例如，当我们无法直接观察电磁对应物，例如带有隐藏喷气机的“失败” GRB或光曲线分析尚无定论时，这一点尤其有用。
Gamma-ray bursts (GRB) are the most intense electromagnetic (EM) sources in the Universe. Long GRB (LGRB) correspond to those events with a typical prompt emission of more than a few seconds. It is generally assumed that they are originated after an implosion of a very massive star within a central compact object engine that can be either a black hole (BH) or a rapidly-spinning highly-magnetized neutron star (NS). Nevertheless, one of the most challenging aspects of defining a unique model is that the progenitor remains initially hidden for direct EM observation. In this work, we investigate the evolution of thermally-produced neutrino properties in both GRB progenitors to provide an alternative solution. We consider the characteristics of both progenitors and the fireball scenario to calculate the oscillation probabilities within a three-flavor admixture regime. Then we obtain the expected neutrino ratio and we also estimate the number of events from these sources that could be detected in the future Hyper-Kamiokande (Hyper-K) detector, considering a sample of previously observed GRB with remarkably signs of being magnetar-produced. Our findings indicate that examining the predicted neutrino rates result in an additional mechanism to determine the type of progenitor associated with these events. This is especially useful when, for instance, we cannot directly observe an electromagnetic counterpart, such as so-called "failed" GRB with hidden jets, or when light curve analysis is inconclusive.
