磁场从黑洞吸积盘提取能量的解析模型(英文)

An Analytical Model for Magnetic Extraction of Energy from Black-Hole Accretion Disk

提出了一种磁场提取黑洞吸积盘能量的解析模型,其中涉及到3种能量机制:(1)Blandford-Znajek(BZ)与连接黑洞与天体物理负载的开放磁力线有关,(2)磁耦合(MC)过程与连接黑洞与盘负载的闭合磁力线有关,(3)DL过程与连接吸积盘与天体物理负载的开放磁力线有关.利用等效电路导出上述能量机制的电磁功率和力矩表达式.此外还讨论了这个模型潜在的天体物理应用.

An analytical model for magnetic extraction of energy from black-hole accretion disk is proposed, in which three energy mechanisms are involved. （1） The Blandford-Znajek （BZ） process is related to the open magnetic field lines connecting a black hole （BH） with the astrophysical load, （2） the magnetic coupling （MC） process is related to the closed magnetic field lines connecting the BH with the disk load, and （3） the DL process is related to the open field lines connecting the disk with the astrophysical load. The expressions for the electromagnetic powers and torques in the above processes are derived by using an equivalent circuit. In addition, the potential application of this model in astrophysics is discussed.