RUI: Tilted Accretion Disks Around Rapidly Rotating Black Holes

RUI：快速旋转黑洞周围倾斜的吸积盘

• 批准号: 0807385
• 负责人: Patrick Fragile
• 金额: $ 15.52万
• 依托单位: College of Charleston
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0807385&HistoricalAwards=false
• 关键词: RUI; Tilted; Accretion; Disks; Around

AST-0807385FragileMuch progress has been made recently in the theoretical and observational understanding of black-hole accretion disks and jets. However, an often overlooked free parameter is the angle between the spin axis of the black hole and the angular momentum axis of the inflowing gas, which can have a profound impact. For example, tilted thick accretion disks appear to have higher accretion efficiencies than their un-tilted counterparts, and it seems that jet orientations are affected by the tilt angle. This project will study the structure and observational appearance of tilted black-hole accretion disks and their attendant jets, through advanced numerical relativistic magneto-hydrodynamic simulations, fully incorporating the effects of the black hole space-time as well as magneto-rotational turbulence, thought to be a primary source of angular momentum transport. Results will be post-processed to create simulated observations, with particular emphasis on identifying features that might indicate tilted disks, such as variability patterns in the light curve, or complex reflection features.Astrophysical black holes still have the capacity to captivate public audiences and the imagination of young students. The results of this work will be included in existing public outreach programs and public-interest web sites, and incorporated into classroom lessons. The research itself directly involves graduate and undergraduate researchers.

AST-0807385 FragileMuch最近在对黑孔积聚磁盘和喷气机的理论和观察性理解中取得了进步。 但是，通常被忽略的自由参数是黑洞的自旋轴与流动气体的角动量轴之间的角度，这可能会产生深远的影响。 例如，倾斜厚的积聚磁盘的积聚效率似乎高于其非倾斜磁盘，并且似乎喷气方向受倾斜角度的影响。 该项目将通过先进的数值相对论磁磁动力学模拟来研究倾斜黑孔积聚磁盘及其伴随喷气机的结构和观察性外观，完全结合了黑洞时空以及磁性旋转的湍流的影响，被认为是角动力动量传输的主要来源。 结果将进行后处理以创建模拟观察结果，特别是识别可能表明倾斜度磁盘的特征，例如光曲线中的可变性模式或复杂的反射特征。 这项工作的结果将包括在现有的公共外展计划和公共利益网站中，并将其纳入课堂课程。 研究本身直接涉及研究生和本科研究人员。