Collaborative Proposal: WoU-MMA: Observations of Gravitational Wave Sources Using the Long Wavelength Array

合作提案：WoU-MMA：使用长波长阵列观测引力波源

• 批准号: 2011731
• 负责人: Michael Kavic
• 金额: $ 18.92万
• 依托单位: SUNY College at Old Westbury
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2011731&HistoricalAwards=false
• 关键词: Collaborative; Proposal; WoU; MMA; Observations

The recent world-wide astronomy observing campaign of the merger of two neutron stars using light, or electromagnetic (EM) radiation, along with gravitational waves (GW), an event called GW 170817, threw wide open the multi-messenger window on the universe, producing large advances in knowledge about many fields of physics and astronomy. But at least one aspect of such a merger is yet to be explored by observations: the interaction of the magnetospheres, or regions of space affected by magnetic fields, of the two neutron stars (NS), contemporaneous with, or just prior to the release of the most intense gravitational waves and the merger. Various theoretical models suggest that a bright, prompt, low-frequency radio pulse could be emitted at that time. A research collaboration between Virginia Polytechnic Institute and State University (Virginia Tech; VT) and the State University of New York College at Old Westbury will conduct a triggered search for fast radio transients coincident with GW signals from binary NS mergers detected by the Laser Interferometer Gravitational Wave Observatory (LIGO) and Virgo collaboration. The first station of the Long Wavelength Array (LWA1) radio telescope will be used in this work. A graduate student at Virginia Tech and undergraduate students at both institutions will be involved in this research. At SUNY Old Westbury, where the student body predominantly consists of members of groups underrepresented in astronomy, a particular effort will be made to involve students from these groups in the research program. Observing a prompt radio pulse in near-coincidence with a GW event (or setting limits on its brightness) could pin down details of the environmental physics of the merger which can play a role in understanding the subsequent accretion, relativistic jet, gamma-ray burst, and succeeding electromagnetic emission. LIGO will start the O4 science run in 2021, during the project period. The latency for GW notification will be low enough (3 minutes) to enable LWA1’s automatic response system to begin timely observations. The research team has extensive experience with dispersed single-pulse detection, using LWA1. So they are well-positioned to observe any prompt low-frequency pulse. The researchers will communicate their observations and analysis of any prompt pulse (or upper limit) as quickly as possible through the LIGO-Virgo OpenLVEM Forum, probably within about a day of an event. This project advances the goals of the NSF Windows on the Universe Big Idea.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

最近利用光或电磁 (EM) 辐射以及引力波 (GW) 进行的两颗中子星合并的全球天文学观测活动（称为 GW 170817 的事件）打开了宇宙的多信使窗口，在物理学和天文学的许多领域的知识方面取得了巨大进步，但这种合并的至少一个方面还有待通过观测来探索：磁层或受磁场影响的空间区域的相互作用。两颗中子星（NS）的场，与最强烈的引力波释放和合并同时或之前，各种理论模型表明，此时可能会发射出明亮、迅速、低频的射电脉冲。弗吉尼亚理工学院和州立大学（弗吉尼亚理工大学；VT）和纽约州立大学老韦斯特伯里学院之间的一项研究合作将针对与二元 NS 合并产生的引力波信号同时发生的快速射电瞬变进行触发搜索。这项工作将使用激光干涉仪引力波天文台（LIGO）和处女座合作的长波长阵列（LWA1）射电望远镜的第一站。弗吉尼亚理工大学的研究生和本科生将参与这项工作。在这项研究中，纽约州立大学老韦斯特伯里分校的学生群体主要由天文学领域代表性不足的群体成员组成，因此将特别努力让这些群体的学生参与到观测即时射电脉冲的研究计划中。与引力波事件几乎同时发生（或对其亮度设置限制）可以确定合并的环境物理细节，这可以在理解随后的吸积、相对论性喷流、伽马射线爆发和随后的电磁发射方面发挥作用。 LIGO 将于 2021 年启动 O4 科学运行，在项目期间，GW 通知的延迟将足够低（3 分钟），以使 LWA1 的自动响应系统能够及时开始观测研究。团队在使用 LWA1 进行分散单脉冲检测方面拥有丰富的经验，因此他们有能力观察任何瞬发低频脉冲，研究人员将尽快传达他们对任何瞬发脉冲（或上限）的观察和分析。通过 LIGO-Virgo OpenLVEM 论坛，可能在活动结束后大约一天内，该项目推进了 NSF 宇宙之窗大创意的目标。该奖项反映了 NSF 的法定使命，并通过使用基金会的评估被认为值得支持。智力优点以及更广泛的影响审查标准。

项目成果

Stability and observability of magnetic primordial black hole-neutron star collisions

磁性原初黑洞-中子星碰撞的稳定性和可观测性

• DOI: 10.1088/1475-7516/2023/06/017
• 发表时间: 2022-09-13
• 期刊: Journal of Cosmology and Astroparticle Physics
• 影响因子: 6.4
• 作者: J. Estes;M. Kavic;S. Liebling;M. Lippert;J. Simonetti
• 通讯作者: J. Simonetti