Dissipation and Radiation of MRI-Driven Accretion Flows around Low Luminosity Black Holes

低光度黑洞周围 MRI 驱动的吸积流的耗散和辐射

• 批准号: 0909167
• 负责人: Edison Liang
• 金额: $ 30.2万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-07-01 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0909167&HistoricalAwards=false
• 关键词: Dissipation; Radiation; MRI; Driven; Accretion

AST-0909167LiangThis project addresses the frontier problems of plasma dissipation and radiation in accretion flows onto black holes, when the density is so low that Coulomb coupling is inadequate to heat the electrons. Using magnetohydrodynamic turbulence generated by the magneto-rotational-instability (MRI) as the template, the physics of plasma energization and radiation will be studied in depth, using Particle-in-Cell codes and Monte Carlo radiation codes. This research is potentially transformative as it tackles the new frontier of 'subgrid' physics, linking microphysical processes to macroscopic simulations.The study will impact all accretion phenomena in which the MRI mechanism may be important, as well as having much broader applications to most plasma phenomena beyond astrophysics. This research also exposes undergraduates and talented high school students to cutting-edge astrophysics research and supercomputer applications. User-friendly public access comes from an active website maintained in collaboration with the Houston museum system.This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).

AST-0909167梁这个项目解决了当密度很低以至于库仑耦合不足以加热电子时，吸积流到黑洞中的等离子体耗散和辐射的前沿问题。 本文以磁旋转不稳定性（MRI）产生的磁流体动力学湍流为模板，利用Particle-in-Cell程序和MonteCarlo辐射程序，对等离子体湍流和辐射物理进行了深入的研究。 这项研究具有潜在的变革性，因为它解决了“亚网格”物理学的新前沿，将微观物理过程与宏观模拟联系起来。这项研究将影响MRI机制可能很重要的所有吸积现象，并对天体物理学之外的大多数等离子体现象有更广泛的应用。 这项研究还使本科生和有才华的高中生接触到尖端的天体物理学研究和超级计算机应用。 用户友好的公众访问来自与休斯顿博物馆系统合作维护的活跃网站。该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。