Collaborative Research: SNEWS: the SuperNova Early Warning System

合作研究：SNEWS：SuperNova 早期预警系统

• 批准号: 1506069
• 负责人: Kate Scholberg
• 金额: $ 5.48万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-08-01 至 2020-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1506069&HistoricalAwards=false
• 关键词: Collaborative; Research; SNEWS; SuperNova; Early

When a massive star reaches the end of its life, the core of the star collapses, producing a supernova. While visually spectacular, less than 1% of the energy in the supernova is released as visible light or as kinetic energy in the surrounding environment. Most of the energy from the supernova is released in neutrinos, which are small particles that only interact weakly with matter. The neutrino emission from a supernova precedes the emission of visible light by a few minutes up to many hours. Detecting the first neutrinos from a supernova therefore provides an early alert to trigger further observations. The SuperNova Early Warning System (SNEWS) is a network of neutrino detectors around the world designed to provide automated early alerts for supernovae in our galaxy. While rare, a galactic supernova would provide a unique opportunity to study the physics of core-collapse supernova, as well as the properties of neutrinos. The early alerts from SNEWS will enable observations of the earliest phases of the supernova for physicists and astronomers around the world. The SNEWS project works to engage amateur astronomers, who may play an important role in optical observations of supernova, and to involve them in the science of supernova. SNEWS involves neutrino detectors around the world: Super-K, Large Volume Detector, IceCube, Borexino, KAMLand, and Daya Bay. If any of the participating experiments finds a burst of events, it sends a datagram to the central SNEWS computer located at Brookhaven National Laboratory, with a backup located in Bologna. If a coincidence is found within 10 seconds, a supernova alert will be sent out. SNEWS has been operational since 1998, and has been running in a fully-automated mode since 2005 with near-100% up-time. This award will provide funds to maintain the SNEWS system, support undergraduate researchers participating in the project, and expand connections to the astronomical community.

当一颗大质量的星星走到生命的尽头时，星星的核心会塌缩，产生超新星。 虽然在视觉上很壮观，但超新星中只有不到1%的能量以可见光或动能的形式释放到周围环境中。 超新星的大部分能量以中微子的形式释放出来，中微子是一种只与物质发生微弱相互作用的小粒子。 超新星的中微子辐射比可见光辐射早几分钟到几个小时。 因此，从超新星中探测到第一个中微子可以提供一个早期警报，以触发进一步的观测。 超新星早期预警系统（SNEWS）是一个由世界各地的中微子探测器组成的网络，旨在为我们银河系中的超新星提供自动早期警报。 虽然罕见，但银河系超新星将提供一个独特的机会来研究核心坍缩超新星的物理学以及中微子的性质。 SNEWS的早期警报将使世界各地的物理学家和天文学家能够观测超新星的最早阶段。 SNEWS项目致力于吸引在超新星光学观测中可能发挥重要作用的业余天文学家参与，并使他们参与超新星科学。 SNEWS涉及世界各地的中微子探测器：Super-K，大体积探测器，IceCube，Borexino，KAMLand和大亚湾。 如果任何一个参与的实验发现了一个突发事件，它就会向位于布鲁克海文国家实验室的中央SNEWS计算机发送一个数据报，并在博洛尼亚进行备份。 如果在10秒内发现一个巧合，超新星警报将被发出。 SNEWS自1998年以来一直在运行，自2005年以来一直以全自动模式运行，运行时间接近100%。该奖项将提供资金来维护SNEWS系统，支持参与该项目的本科研究人员，并扩大与天文学界的联系。