论文标题
Super-Kamiokande的Supernova Pre-Supernova警报系统
Pre-Supernova Alert System for Super-Kamiokande
论文作者
论文摘要
在2020年,超级kamiokande(SK)实验移至新阶段(SK-GD),在该阶段(GD)硫酸盐(GD)硫酸盐八水合物被添加到检测器中的水中,提高了检测热中子的效率,从而提高了对低能量电子抗anti-neceletrinos的敏感性。 SK-GD有可能通过在核心重力崩溃之前检测到负责巨大恒星冷却的热过程和核过程中的电子抗中性旋转器,从而提供早期的起步核心偏转超新星的警报。这些在硅燃烧阶段排出的苏植物前中微子可以超过IBD反应的能量阈值。我们介绍了SK-GD对苏佩尔诺诺娃恒星的敏感性以及基于SK中这些中微子的检测,以及用于开发苏佩尔诺诺娃的预报的技术,以及对GD浓度较高的将来的SK-GD阶段的前景。对于当前的SK-GD阶段,可以在核心爆发本身之前发出高度信心的betelgeuse警报。
In 2020, the Super-Kamiokande (SK) experiment moved to a new stage (SK-Gd) in which gadolinium (Gd) sulfate octahydrate was added to the water in the detector, enhancing the efficiency to detect thermal neutrons and consequently improving the sensitivity to low energy electron anti-neutrinos from inverse beta decay (IBD) interactions. SK-Gd has the potential to provide early alerts of incipient core-collapse supernovae through detection of electron anti-neutrinos from thermal and nuclear processes responsible for the cooling of massive stars before the gravitational collapse of their cores. These pre-supernova neutrinos emitted during the silicon burning phase can exceed the energy threshold for IBD reactions. We present the sensitivity of SK-Gd to pre-supernova stars and the techniques used for the development of a pre-supernova alarm based on the detection of these neutrinos in SK, as well as prospects for future SK-Gd phases with higher concentrations of Gd. For the current SK-Gd phase, high-confidence alerts for Betelgeuse could be issued up to nine hours in advance of the core-collapse itself.