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Following up the afterglow:strategy for X-ray observation triggered by gravitational wave events

Research in Astronomy and Astrophysics 2021年第12期21卷 405-415页

作者：刘牧鑫童晖胡一鸣陈文亮刘柱孙惠 martin hendry School of Physics and Astronomy Sun Yat-sen University(Zhuhai Campus)Zhuhai 519082China Tian Qin Research Center for Gravitational Physics Sun Yat-sen University(Zhuhai Campus)Zhuhai 519082China Department of Applied Physics Fukuoka UniversityNanakuma 8-19-1Fukuoka 814-0180Japan Max Planck Institute for extraterrestrial Physics Gie?enbachstra?e 185748 GarchingGermany Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China SUPA School of Physics and AstronomyUniversity of GlasgowGlasgow G128QQUK

The multi-messenger observation of coalescing compact binary systems promises great scientific treasure.However,synthesising observations from both gravitational wave and electromagnetic channels remains challenging.In the context of the day-to-week long emission from a macronova,the binary neutron star merger GW170817 remains the only event with successful electromagnetic followup.In this manuscript,we explore the possibility of using the early stage X-ray afterglow to search for the electromagnetic counterpart of a gravitational wave event.Two algorithms,the simple and straightforward sequential observation(SO)and the step-wise optimizing local optimization are considered and applied to some simulated events.We consider the WXT from the proposed Einstein Probe as a candidate X-ray telescope,which has a very wide field of view of 3600 deg^(2).Benefiting from the large field of view and high sensitivity,we find that the SO algorithm not only is easy to implement,but also promises a good chance of actual detection.

关键词： gravitational waves X-ray afterglow multi-messenger astronomy

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国外大科学装置机构STEM教育资源开发的启示

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自然科学博物馆研究 2021年第3期6卷 40-49+94页

作者：郭庆乔翠兰朱宗宏 martin hendry 华中师范大学物理科学与技术学院北京师范大学天文系英国格拉斯哥大学物理与天文学院

优质教育资源是实现STEM教育全面整合、纵深发展的重要前提,是21世纪国际科学教育转型的重要推动力量。国外大科学装置机构积极挖掘自身教育价值,广泛开发STEM教育资源,具有以下特点:重视基础教育科学探究型资源的开发;以科学家为核心... 详细信息

优质教育资源是实现STEM教育全面整合、纵深发展的重要前提,是21世纪国际科学教育转型的重要推动力量。国外大科学装置机构积极挖掘自身教育价值,广泛开发STEM教育资源,具有以下特点:重视基础教育科学探究型资源的开发;以科学家为核心落实多主体合作开发模式;以课程标准为理论指导。与之相比,我国大科学装置教育资源开发存在以下问题:政策环境不充分;资助体系不健全;开发者意识淡薄;受众素养不高。未来科技资源教育转化应注重完善科技资源教育转化的政策制度;提升开发者与受众的主动性与创造性;加强社会各界的协同作用。

关键词：科学教育大科学装置 STEM 教育资源

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Gravitational wave astrophysics, data analysis and multimessenger astronomy

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Science China(Physics,Mechanics & Astronomy) 2015年第12期58卷 44-64页

作者： LEE Hyung Mok LE BIGOT Eric-Olivier DU ZhiHui LIN ZhangXi GUO XiangYu WEN LinQing PHUKON Khun Sang PANDEY Vihan BOSE Sukanta FAN Xi-Long hendry martin Department of Physics and Astronomy Seoul National University Research Institute of Information Technology Tsinghua National Laboratory for Information Science and TechnologyTsinghua University Laboratoire Astro Particule et Cosmologie (APC) Universit Paris Diderot-Paris 7 Bc/timent Condorcet Case 7020 75205 Paris Cedex 13 France Tsinghua National Laboratory for Information Science and Technology Department of Computer Science and TechnologyTsinghua University School of Physics The University of Western Australia Department of Physics IIT Kanpur Inter-University Centre for Astronomy and Astrophysics Department of Physics & Astronomy Washington State University School of Physics and Electronics Information Hubei University of Education SUPA School of Physics and Astronomy University of Glasgow

This paper reviews gravitational wave sources and their detection. One of the most exciting potential sources of gravitational waves are coalescing binary black hole systems. They can occur on all mass scales and be formed in numerous ways, many of which are not understood. They are generally invisible in electromagnetic waves, and they provide opportunities for deep investigation of Einstein's general theory of relativity. Sect. 1 of this paper considers ways that binary black holes can be created in the universe, and includes the prediction that binary black hole coalescence events are likely to be the first gravitational wave sources to be detected. The next parts of this paper address the detection of chirp waveforms from coalescence events in noisy data.Such analysis is computationally intensive. Sect. 2 reviews a new and powerful method of signal detection based on the GPUimplemented summed parallel infinite impulse response filters. Such filters are intrinsically real time alorithms, that can be used to rapidly detect and localise signals. Sect. 3 of the paper reviews the use of GPU processors for rapid searching for gravitational wave bursts that can arise from black hole births and coalescences. In sect. 4 the use of GPU processors to enable fast efficient statistical significance testing of gravitational wave event candidates is reviewed. Sect. 5 of this paper addresses the method of multimessenger astronomy where the discovery of electromagnetic counterparts of gravitational wave events can be used to identify sources, understand their nature and obtain much greater science outcomes from each identified event.

关键词：引力波天文学天体物理学数据分析无限脉冲响应滤波器信号检测数据合并广义相对论

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