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时代。随后对伽马射线和 X 射线的观测提供了有关这些事件的更多信息。该项目将使用计算机模拟对这些事件进行建模，将双中子星合并的高能排放与事件的详细物理联系起来。该项目还将为来自加州-亚利桑那州少数族裔天文学研究和教育合作伙伴关系 (CAMPARE) 和加州大学桥项目的六名本科生创造夏季研究机会。该项目开发的计算工具将公开提供。该奖项推进了“宇宙之窗”大构想的目标。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原理：广义相对论引力、电阻磁流体动力学具有用于小规模湍流发电机作用以及中微子发射和吸收的子网格模型。该模拟之后将对高能光子和中微子的产生进行详细的微观物理计算，这将使引力波、热和非热电磁以及来自合并中子星的高能中微子的联合解释成为可能。作为该项目的一部分，该团队将开发一种新的开源广义相对论电阻 MHD 求解器。除了来自 CAMPARE 和 Cal-Bridge 的六名本科生的支持外，该项目中生成的模拟数据和计算工具也将公开。该奖项反映了 NSF 的法定使命，并通过使用基金会的评估进行评估，认为值得支持。智力价值和更广泛的影响审查标准。

项目成果

Second release of the CoRe database of binary neutron star merger waveforms

双中子星并合波形 CoRe 数据库第二次发布

• DOI: 10.1088/1361-6382/acc231
• 发表时间: 2023-03
• 期刊: Classical and Quantum Gravity
• 影响因子: 3.5
• 作者: Gonzalez, Alejandra;Zappa, Francesco;Breschi, Matteo;Bernuzzi, Sebastiano;Radice, David;Adhikari, Ananya;Camilletti, Alessandro;Vivekanandji Chaurasia, Swami;Doulis, Georgios;Padamata, Surendra;et al
• 通讯作者: et al

High-Energy Extragalactic Neutrino Astrophysics

高能河外中微子天体物理学

• DOI: 10.1146/annurev-nucl-011122-061547
• 发表时间: 2022-09
• 期刊: Annual Review of Nuclear and Particle Science
• 影响因子: 12.4
• 作者: Kurahashi, Naoko;Murase, Kohta;Santander, Marcos
• 通讯作者: Santander, Marcos

A finite element method for angular discretization of the radiation transport equation on spherical geodesic grids

球面测地网格上辐射输运方程角离散化的有限元方法

• DOI: 10.1016/j.jcp.2023.112365
• 发表时间: 2023-10
• 期刊: Journal of Computational Physics
• 影响因子: 4.1
• 作者: Bhattacharyya, Maitraya K.;Radice, David
• 通讯作者: Radice, David

Light curves of BSM-induced neutrino echoes in the optically thin limit

BSM 诱发的中微子回波在光学薄极限下的光变曲线

• DOI: 10.1103/physrevd.107.103038
• 发表时间: 2023-05
• 期刊: Physical Review D
• 影响因子: 5
• 作者: Eskenasy, Ryan;Kheirandish, Ali;Murase, Kohta
• 通讯作者: Murase, Kohta

Constraints on the Maximum Densities of Neutron Stars from Postmerger Gravitational Waves with Third-Generation Observations

第三代观测对合并后引力波中子星最大密度的约束

• DOI: 10.1103/physrevlett.128.161102
• 发表时间: 2022-04
• 期刊: Physical Review Letters
• 影响因子: 8.6
• 作者: Breschi, Matteo;Bernuzzi, Sebastiano;Godzieba, Daniel;Perego, Albino;Radice, David
• 通讯作者: Radice, David