Electromagnetic counterparts to gravitational wave bursts

引力波爆发的电磁对应物

• 批准号: 2112224
• 金额: --
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2112224
• 关键词: Electromagnetic; counterparts; gravitational; wave; bursts

The student, Ms Lauren Rhodes, will work on the radio counterparts of gravitational wave (GW) burst (neutron star mergers) and the closely-related phenomenon of short Gamma Ray Bursts (sGRBs). The core resource of the project will be the guaranteed time that our team has via 'ThunderKAT', which is an approved 5-year large survey programme on the newly-commissioned MeerKAT radio telescope (project supervisor Fender is co-lead of ThunderKAT). We expect to follow up a number of events after Adv. LIGO switches back on in early 2019, and this will allow us to explore the diversity in the properties of the electromagnetic counterparts of GW bursts, and measure the kinetic feedback from these events. This core MeerKAT programme will be supported with multiwavelength campaigns, as well as a parallel radio programme on AMI-LA in the north. In concert with the radio observations, the theoretical interpretation of the radio events will be explored. At the moment very simple models based upon 'normal' GRB afterglows are being applied to the one known GW afterglow, that of GW170817. We will explore the range of parameter space allowed by the observations in terms of simple models, as well as exploring the role that numerical models might have to play in terms of interpreting the results.As ever with such projects, we cannot predict exactly what will occur, and we will retain a flexible and dynamic approach. In particular, the observational and modelling skills learned will be relevant to other synchrotron transients (e.g. the recently-discovered and unexplained transient 'AT2018cow').

学生劳伦罗兹女士将研究引力波（GW）爆发（中子星星合并）的无线电对应物和短伽马射线爆发（sGRBs）的密切相关现象。该项目的核心资源将是我们的团队通过“ThunderKAT”获得的保证时间，这是一项新委托的MeerKAT射电望远镜的5年大型调查计划（项目主管Fender是ThunderKAT的共同领导）。我们希望在2019年初Adv. LIGO重新启动后跟进一些事件，这将使我们能够探索GW爆发的电磁对应物属性的多样性，并测量这些事件的动力学反馈。这一MeerKAT核心方案将得到多波长宣传活动的支持，并将在北部开展一个关于AMI-LA的平行广播节目。与无线电观测一致，将探索无线电事件的理论解释。目前，基于“正常”伽玛射线暴余辉的非常简单的模型正被应用于一个已知的GW余辉，即GW 170817。我们将探索简单模型中观测所允许的参数空间范围，以及探索数值模型在解释结果方面可能发挥的作用。与以往一样，对于此类项目，我们无法准确预测会发生什么，我们将保留灵活和动态的方法。特别是，所学到的观测和建模技能将与其他同步加速器瞬变（例如最近发现的和无法解释的瞬变“AT 2018 cow”）相关。