Outflows from Accreting Black Holes in Active Galactic Nuclei

活动星系核中吸积黑洞的流出

基本信息

批准号：
9876887
负责人：
Mitchell Begelman
金额：
$ 32.39万
依托单位：
University of Colorado at Boulder
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1999
资助国家：
美国
起止时间：
1999-09-01 至 2003-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9876887&HistoricalAwards=false
关键词：
Outflows Accreting Black Holes Active

项目摘要

Powerful winds and jets are among the most dramatic manifestations of accreting black holes in active galactic nuclei (AGN). Recent consideration of the energetics of accretion flows suggests that such outflows are not only inevitable, but that the mass loss may be so strong that all but a tiny fraction of the supplied matter is expelled before it reaches the black hole. This project studies the theoretical ramifications and observational consequences of this new view of accretion in AGN. Although the loss of mass, angular momentum, and energy are interrelated in a predictable way, the specifics of the outflows depend on microphysical details. Dr. Begelman is constructing "inflow-outflow" models, calculating their radiative properties, and studying their relationships to the production and collimation of relativistic jets as well as their interactions with the AGN environment.The relativistic jets in AGNs may be one consequence of powerful mass loss from the inner parts of accretion flows, but the jets could also derive much of their energy from the spin of the black hole. Dr. Begelman is also studying how the extraction of spin energy via the Blandford-Znajek effect depends on the black hole's accretion history and its current environment. Dr. Begelman is also studying the braod z-ray iron lines and relativistic "diskoseismology" - the study of trapped oscillations in the inner regions of accretions disks - as observational probes of strong gravity regions close to black holes. ***

强大的风和喷气机是在活性银河核（AGN）中吸收黑洞的最显着表现。最近考虑的吸积流能量表明，这种流出不仅是不可避免的，而且质量损失可能是如此强大，以至于除了一小部分所提供的物质之前，所有损失都被排出之前，然后才能到达黑洞。该项目研究了AGN中这种新观点的理论分析和观察后果。尽管质量，角动量和能量的损失以可预测的方式相互关联，但流出的细节取决于微物理细节。 Begelman博士正在构建“流出流出”模型，计算其辐射性能，并研究它们与相对论喷气机的生产和准确性以及与AGN环境的相互作用的关系。AGN中的相对论喷气机的结果可能是促成销量内部零件的强大质量损失的结果，但它们也可能导致了他们的塑性孔，它们可能会导致他们的能量造成的精力可能会造成塑造的精力。 Begelman博士还在研究如何通过Blandford-Znajek效应提取自旋能量的效果取决于黑洞的积聚历史及其当前环境。 Begelman博士还正在研究Braod Z射线铁线和相对论的“椎间盘学” - 对增生磁盘内部区域的振荡的研究 - 作为接近黑洞的强力区域的观察性探针。 ***