Gamma Ray and Neutrino Observations of GRBs and choked GRBs

伽马射线和中微子观测伽玛射线暴和窒息伽马射线暴

• 批准号: 1205807
• 负责人: Ignacio Taboada
• 金额: $ 49.69万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1205807&HistoricalAwards=false
• 关键词: Gamma; Ray; Neutrino; Observations; GRBs

Gamma Ray Bursts (GRBs) are among the most powerful events in the Universe. With this award the Georgia Tech group will use HAWC and IceCube data to study high-energy gamma ray and neutrino emission from GRBs. The HAWC observatory, currently under construction in Mexico, will be at an order of magnitude more sensitive to GRB emission than previous ground-based instruments. The group will play an important role in the design and construction of HAWC, particularly in the electronics and software related to the study of GRBs. The HAWC data may teach us about the highest energy particles accelerated by GRBs and may reveal details about the relativistic jets that power a GRB. IceCube is a high-energy neutrino telescope in operation at the South Pole. The group will use data collected by DeepCore, a low energy extension of IceCube, to search for transient bursts of neutrinos. To enhance DeepCore's sensitivity they will collect data with a new, looser vetoing technique. They will study the connection between core collapse supernovae (SNe) and GRBs and the hypothesis that many core collapse SNe have hidden or choked jets. The discovery of neutrinos in coincidence with core collapse SNe would prove that they and GRBs are part of continuous class of astrophysical objects. Broader Impact: The Georgia Tech group will report HAWC observations promptly to enable multi-messenger follow up with neutrinos (notably IceCube/DeepCore), gravitational waves, X-rays, etc., thus extending the scientific range of the experiments. In collaboration with CEISMC at Georgia Tech the PI and members of his group will continue their program of lectures and hands on demonstrations in the areas of particle and nuclear physics and astrophysics. Demonstrations include devices such as a cloud chamber and a Geiger counter. The high schools targeted have a large Hispanic population, for which the PI, born in Latin America, has a natural connection.

伽马射线暴（GRB）是宇宙中最强大的事件之一。有了这个奖项，格鲁吉亚技术小组将使用HAWC和IceCube数据来研究伽马射线暴的高能伽马射线和中微子发射。目前正在墨西哥建造的HAWC观测台对伽马射线暴辐射的敏感度将比以前的地面仪器高出一个数量级。该小组将在HAWC的设计和建造中发挥重要作用，特别是在与伽玛暴研究有关的电子学和软件方面。HAWC的数据可能会告诉我们最高能量的粒子加速的伽玛射线暴，并可能揭示有关相对论喷流的动力伽玛射线暴的细节。 冰立方是一个在南极运行的高能中微子望远镜。该小组将使用DeepCore（IceCube的低能扩展）收集的数据来搜索中微子的瞬时爆发。 为了提高DeepCore的敏感性，他们将使用一种新的、更宽松的否决技术来收集数据。 他们将研究核心坍缩超新星（SNe）和伽玛暴之间的联系，以及许多核心坍缩超新星隐藏或阻塞喷流的假设。中微子的发现与核塌缩SNe的巧合将证明它们和伽玛暴是连续类天体的一部分。 更广泛的影响：格鲁吉亚科技集团将及时报告HAWC的观测结果，以使多信使能够跟踪中微子（特别是IceCube/DeepCore）、引力波、X射线等，从而扩大了实验的科学范围。在与CEISMC在格鲁吉亚技术合作，PI和他的小组成员将继续他们的讲座计划，并在粒子和核物理和天体物理领域的演示。演示包括诸如云室和盖革计数器等设备。目标高中有大量的西班牙裔人口，出生在拉丁美洲的PI与此有着天然的联系。