增强 GWOPS 协调多望远镜探测引力波电磁对应体的能力

IF 3.3 3区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS
Penghui Ma, Yunfei Xu, Jingwei Hu, Zhen Zhang, Liang Ge, Min He, Shanshan Li, Linying Mi, Changhua Li, Dongwei Fan, Chenzhou Cui
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引用次数: 0

摘要

引力波(GWs)的突破性探测开创了天文观测的新纪元,使我们有机会接触到电磁波无法感知的宇宙现象。本身微弱的引力波信号加上源定位的巨大不确定性给天文学领域带来了重大挑战。在本文中,我们介绍了创新策略,以提高观测 GW 事件电磁对应物的效率,从而进一步揭开宇宙的秘密。我们提出了一种设计观测目标和确定优先次序的新技术,在 GW 误差天区的边界内从震中向外围推进。与传统方法相比,这种方法将望远镜的平均回转距离大大缩短了 41%,从而提高了观测效率。此外,我们还为望远镜网络开发了一种协作观测策略,根据单个望远镜的视场(FOV)大小分配观测目标。这确保了全面的覆盖而不产生冗余,使得由四台望远镜组成的网络能够覆盖一个天空区域,积累的观测概率是同等时间内独立运行的单台望远镜的四倍以上。在这些策略的基础上,我们对中国-天文台团队开发的全球天文跟踪观测规划系统(GWOPS)进行了大幅升级,为大视野(大于1平方度)望远镜网络提供精确的观测规划。该系统还采用了基于网络的用户界面,以图形的形式展示了全球天文观测误差天区和观测规划结果,极大地改善了用户交互和体验。本文介绍的研究为天文学家提供了一个强大的工具包,提高了搜索和研究 GW 事件电磁对应物的效率,并预示着天体物理学和宇宙学研究的新前沿。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhancing GWOPS Capabilities for Coordinated Multi-Telescope Detection of Gravitational Wave Electromagnetic Counterparts
The groundbreaking detection of gravitational waves (GWs) has ushered in a new era of astronomical observation, granting us access to cosmic phenomena that are imperceptible to electromagnetic waves. The inherently weak GW signals coupled with the substantial uncertainties in source localization pose significant challenges to the field of astronomy. In this paper, we introduce innovative strategies to enhance the efficiency of observing electromagnetic counterparts to GW events, thereby unlocking further secrets of the cosmos. We present a novel technique for designing observation targets and establishing priorities, progressing from the epicenter to the periphery within the boundaries of the GW error sky region. This method has significantly reduced the average slewing distance of telescopes by 41% compared to traditional methods, thus enhancing observational efficiency. Additionally, we have developed a collaborative observation strategy for telescope networks, allocating observation targets based on the field-of-view (FOV) sizes of individual telescopes. This ensures comprehensive coverage without redundancy, allowing a network of four telescopes to cover a sky area and accumulate observation probability more than four times that of a single telescope operating independently over an equivalent period. Building upon these strategies, we have significantly upgraded GWOPS, the GW Follow-up Observation Planning System developed by the China-VO team, to provide precise observational planning for large FOV (greater than 1 square degree) telescope networks. The system also features a web-based user interface that presents the GW error sky area and observation planning results in a graphical format, significantly improving user interaction and experience. The research presented herein equips astronomers with a robust toolkit, advancing the efficiency of searching for and studying electromagnetic counterparts to GW events, and heralding new frontiers in the research of astrophysics and cosmology.
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来源期刊
Publications of the Astronomical Society of the Pacific
Publications of the Astronomical Society of the Pacific 地学天文-天文与天体物理
CiteScore
6.70
自引率
5.70%
发文量
103
审稿时长
4-8 weeks
期刊介绍: The Publications of the Astronomical Society of the Pacific (PASP), the technical journal of the Astronomical Society of the Pacific (ASP), has been published regularly since 1889, and is an integral part of the ASP''s mission to advance the science of astronomy and disseminate astronomical information. The journal provides an outlet for astronomical results of a scientific nature and serves to keep readers in touch with current astronomical research. It contains refereed research and instrumentation articles, invited and contributed reviews, tutorials, and dissertation summaries.
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