摘要
类星体被发现后,黑洞发电机研究成为阐述活动星系核(AGN)的产能机制及其宇宙学演化的重要内容之一,主要涉及发电机物理和发电机输出特性两个方面。从广义相对论电动力学(GRED)发电机理论和"膜模式"出发,在太阳发电机研究中引入引力磁项,形成了αωΩ黑洞发电机理论。发电机输出包括吸积盘辐射和喷流传播。辐射模型基于经典吸积模型的相对论扩展,已能说明SgrA*的宽发射谱,并可能根据谱特征确定发电机的构型参数;传播模型取决于发电机磁场的轴向分量和角向分量,并已发展出一种普适描述方法。最后还介绍了黑洞发电机的研究动向.
The study of black hole dynamo, concerning mainly the dynamo physics and its output,becomes part and parcel in elucidating both the efficient mechanism for the energy extractionand the cosmological evolution of Active Galactic Nuclei(AGN) after Quasars were found. Basedon the general relativistic electrodynamic s (G RED ), as well as 'the membrane paradigm' ) αωΩdynamo has been developed when formulating the gravitomagnetic effect in the solar dynamotheory. The dynamo outputs consist of the accretion-disk radiation and the jet propagation. Themodel of the former is on the relativistic extensions of classical models by which the extended,spectrun of Sgr A* can be explained, and the configuration parameters for the dynamo can bedetermined. The model of the latter depends on both the axial and toroidal componellts of themagnetic field, and a description used commonly is derived. At last, the latest developments ofthe black hole dynamo are introduced.
出处
《天文学进展》
CSCD
北大核心
1999年第4期346-356,共11页
Progress In Astronomy