WoU-MMA: High-Energy Emission from Neutron Star Mergers

WoU-MMA：中子星合并产生的高能排放

• 批准号: 2108467
• 负责人: David Radice
• 金额: $ 47.83万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2108467&HistoricalAwards=false
• 关键词: WoU; MMA; Energy; Emission; Neutron

The detections of the collision of two neutron stars by the Laser Interferometer Gravitational-wave Observatory (LIGO) has ushered in the era of multimessenger astronomy. Subsequent observations of gamma rays and X-rays have provided additional information about these events. This project will model these events using computer simulations to connect high-energy emissions for binary neutron star mergers with detailed physics of the events. The project will also create summer research opportunities for six undergraduate students from the California-Arizona Minority Partnership for Astronomy Research and Education (CAMPARE) and Cal-Bridge programs. The computational tools developed in this project will be made publicly available. This award advances the goals of the Windows on the Universe Big Idea.The project will perform numerical relativity simulations of binary neutron star mergers including all of the physics necessary to predict and interpret high-energy emission for these events: general relativistic gravity, resistive magnetohydrodynamics with a sub grid model for small-scale turbulent dynamo action, and neutrino emission and absorption. This simulations will be followed by detailed microphysical calculations of the production of high-energy photons and neutrinos, which will enable the joint interpretation of gravitational wave, thermal and non-thermal electromagnetic, and high energy neutrinos from merging neutron stars. As part of this project, the team will develop a new open source general-relativistic resistive MHD solver. In addition to the support of six undergraduates from CAMPARE and Cal-Bridge, the simulation data and the computational tools generated in this project will be made publicly available.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.

激光干涉仪引力波天文台（LIGO）对两颗中子星碰撞的探测开启了多信使天文学的时代。随后对伽马射线和x射线的观测为这些事件提供了更多的信息。该项目将使用计算机模拟来模拟这些事件，将双中子星合并的高能发射与事件的详细物理过程联系起来。该项目还将为来自加州-亚利桑那州天文学研究与教育少数族裔伙伴关系（CAMPARE）和加州大学桥项目的六名本科生创造夏季研究机会。本项目开发的计算工具将向公众开放。这个奖项推进了“宇宙大创意之窗”的目标。该项目将对双中子星合并进行数值相对论模拟，包括预测和解释这些事件的高能发射所需的所有物理学：广义相对论引力、小尺度湍流发电机作用的亚网格模型的电阻磁流体动力学、中微子发射和吸收。在模拟之后，将对高能光子和中微子的产生进行详细的微物理计算，这将使引力波、热和非热电磁力以及合并中子星产生的高能中微子能够联合解释。作为该项目的一部分，该团队将开发一个新的开源广义相对论电阻MHD求解器。除了来自CAMPARE和加州大学剑桥分校的六名本科生的支持外，该项目产生的模拟数据和计算工具将向公众开放。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Numerical relativity simulations of prompt collapse mergers: threshold mass and phenomenological constraints on neutron star properties after GW170817

• DOI: 10.1103/physrevd.105.103022
• 发表时间: 2021-11
• 作者: R. Kashyap;A. Das;D. Radice;Surendra Padamata;Aviral Prakash;D. Logoteta;A. Perego;D. Godzieba;S. Bernuzzi;I. Bombaci;F. J. Fattoyev;B. Reed;A. Schneider

Impacts of Jets and winds from primordial black holes

• DOI: 10.1093/mnrasl/slac097
• 发表时间: 2021-11
• 期刊: Monthly Notices of the Royal Astronomical Society: Letters
• 作者: V. Takhistov;P. Lu;K. Murase;Y. Inoue;G. Gelmini

Revisiting ultrahigh-energy constraints on decaying superheavy dark matter

• DOI: 10.1103/physrevd.107.103013
• 发表时间: 2023-02
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Saikat Das, Ph.D.;K. Murase;T. Fujii

Variable thermal energy injection from magnetar spin-down as a possible cause of stripped-envelope supernova light-curve bumps

磁星自旋下降产生的可变热能注入可能是剥离包层超新星光曲线凸起的原因

• DOI: 10.1093/mnras/stac1352
• 发表时间: 2022
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Moriya, Takashi J.;Murase, Kohta;Kashiyama, Kazumi;Blinnikov, Sergei I.
• 通讯作者: Blinnikov, Sergei I.

High-energy Neutrino Emission from Espresso-reaccelerated Ions in Jets of Active Galactic Nuclei

活动星系核喷流中浓咖啡再加速离子发射的高能中微子

• DOI: 10.3847/1538-4357/aca481
• 发表时间: 2023
• 期刊: The Astrophysical Journal
• 作者: Mbarek, Rostom;Caprioli, Damiano;Murase, Kohta
• 通讯作者: Murase, Kohta