Gamma-ray Burst-Supernova Connection

伽马射线暴与超新星的联系

• 批准号: 1642868
• 金额: --
• 依托单位: University of Leicester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1642868
• 关键词: Gamma; ray; Burst; Supernova; Connection

the origin of many gamma-ray bursts (GRBs) may be explained by the explosive death of a star tens of times more massive than our Sun. the star's core collapses in a supernova event, likely forming a black hole and releasing very fast jets. the GRB light we observe comes from schock fronts within this jets, and for some nearby GRBs we also see accompanying core-collapse supernova (SN). We do not, however, have a sufficiently developed picture of which stars will end their lives as GRB-SN, and how they do this. There is also an urgent need to understand how the GRB jets themselves are launched from the black hole. Very many astrophysical sources possess jets, GRBs being the most relativistic of these.Some of the strongest gamma-ray burst--supernova associations have been nearby, underluminous bursts, and certainly not to your typical GRB. The expected synchotron emission is, in some of these GRBs, not sufficient to explain the X-ray and UV properties. Additional spectral features are present, whose origins will be investigated in this project both in the context of supernovae in the optical several days to weeks after the burst: if we can find supernova signatures at higher, X-ray, energies it may reveal the supernova shock breakout and act as an early-warning system to help us sutdy the supernova onset and evolution.This observational project will use past, present and future data from the NASA Swift satellite, a dedicated GRB-finding mission with its UK data centre hosted in Leicester, in combination with a range of other ground- and space-based observatories spanning many wavelengths. Modelling and simulationg the temporal, spectral and sample properties found in these data, you will study the nature and origins of gamma-ray bursts and their associated supernovae.

许多伽玛射线暴（GRB）的起源可以用一颗质量比我们的太阳大几十倍的星星的爆炸性死亡来解释。这颗星星的核心在超新星事件中坍塌，可能形成一个黑洞并释放出非常快的喷流。我们观测到的伽玛射线暴光来自喷流内部的冲击波阵面，对于一些附近的伽玛射线暴，我们还看到了伴随的核心坍缩超新星（SN）。然而，我们还没有一个足够发达的图片，哪些恒星将结束他们的生命作为GRB-SN，以及他们如何做到这一点。还迫切需要了解伽玛射线暴喷流本身是如何从黑洞发射的。许多天体物理源都有喷流，伽玛暴是其中最具相对论性的。一些最强的伽玛射线暴-超新星组合就在附近，是暗爆，当然不是典型的伽玛暴。预期的同步辐射是，在这些伽玛射线暴中的一些，不足以解释X射线和紫外线特性。本项目将在爆发后几天至几周内在超新星的光学背景下研究其起源：如果我们能在更高的X射线能量下发现超新星的特征，它可能会揭示超新星冲击爆发，并作为一个早期预警系统，帮助我们研究超新星的爆发和演化。美国航天局雨燕卫星目前和未来的数据，这是一个专门的GRB寻找使命，其英国数据中心设在莱斯特，与一系列其他地面和空间观测站跨越许多波长。建模和模拟这些数据中发现的时间，光谱和样本属性，您将研究伽马射线爆发及其相关超新星的性质和起源。

项目成果

Searching the INTEGRAL WEAK alert population for Gamma-ray Bursts and other high energy transients

• DOI: 10.22323/1.285.0007
• 发表时间: 2017-08
• 作者: A. Higgins;R. Starling;D. Götz;S. Mereghetti

ALMA and GMRT Constraints on the Off-axis Gamma-Ray Burst 170817A from the Binary Neutron Star Merger GW170817

• DOI: 10.3847/2041-8213/aa970b
• 发表时间: 2017-10
• 期刊: The Astrophysical Journal Letters
• 作者: Sam Kim;S. Schulze;L. Resmi;J. Gonz'alez-L'opez;A. Higgins;C. Ishwara-Chandra;F. Bauer;I. Gregorio-Monsalvo;M. Pasquale;A. D. U. Postigo;D. A. Kann;S. Mart'in;S. Oates;R. Starling;N. Tanvir;J. Buchner;S. Campana;Z. Cano;S. Covino;A. Fruchter;J. Fynbo;D. Hartmann;J. Hjorth;P. Jakobsson;A. Levan;D. Malesani;M. Michałowski;B. Milvang-Jensen;K. Misra;P. O'Brien;R. S'anchez-Ram'irez;C. Thone;D. Watson;K. Wiersema

The unpolarized macronova associated with the gravitational wave event GW 170817

与引力波事件 GW 170817 相关的非偏振宏新星

• DOI: 10.1038/s41550-017-0285-z
• 发表时间: 2017-10
• 期刊: Nature Astronomy
• 影响因子: 14.1
• 作者: Covino S;Wiersema K;Fan Y Z;Toma K;Higgins A B;Mel;ri A;D'Avanzo P;Mundell C G;Palazzi E;Tanvir N R;Bernardini M G;Branchesi M;Brocato E;Campana S;Alighieri S di Serego;Gotz D;Fynbo J P U;Gao W;Gomboc A;Gompertz B;Greiner J;Hjorth J;Jin Z P;Kaper L;Klos
• 通讯作者: Klos

Investigating the nature of the INTEGRAL gamma-ray bursts and sub-threshold triggers with Swift follow-up

• DOI: 10.1093/mnras/stx1163
• 发表时间: 2017-05
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: A. Higgins;R. Starling;D. Gotz;S. Mereghetti;K. Wiersema;T. Maccarone;J. Osborne;N. Tanvir;P. O’Brien;A. Bird;A. Rowlinson;N. Gehrels

Calibration of EFOSC2 Broadband Linear Imaging Polarimetry

• DOI: 10.1017/pasa.2018.6
• 发表时间: 2018-02
• 期刊: Publications of the Astronomical Society of Australia
• 影响因子: 6.3
• 作者: K. Wiersema;A. Higgins;S. Covino;R. Starling