Jet magnetically accelerated from disk-corona around a rotating black hole  

作　　者：GONG XiaoLong LI LiXin 

机构地区：[1]Department of Astronomy,Beijing Normal University,Beijing 100875,China [2]Kavli Institute for Astronomy and Astrophyxics,Peking University,Beijing 100875,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2012年第5期880-887,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Basic Research Program of China(Grant Nos.2009CB24901 and 2012CB821804);the National Natural Science Foundation of China (Grant No.10973003);the Project for Excellent Young and Middle-Aged Talent of Education Bureau of Hubei Province(Grant No.Q2007120001)

摘　　要：A jet acceleration model for extracting energy from disk-corona surrounding a rotating black hole(BH) is proposed.In the diskcorona scenario,we obtain the ratio of the power dissipated in the corona to the total for such disk-corona system by solving the disk dynamics equations.The analytical expression of the jet power is derived based on the electronic circuit theory of the magnetosphere.It is shown that jet power increases with the increasing BH spin,and concentrates in the inner region of the disk-corona.In addition,we use a sample consisting of 37 radio loud quasars to explore their jet production mechanism,and show that our jet formation mechanism can simulate almost all sources with high power jet,which fails to be explained by the Blandford-Znajek(BZ) process.A jet acceleration model for extracting energy from disk-corona surrounding a rotating black hole （BH） is proposed. In the disk- corona scenario, we obtain the ratio of the power dissipated in the corona to the total for such disk-corona system by solving the disk dynamics equations. The analytical expression of the jet power is derived based on the electronic circuit theory of the magnetosphere. It is shown that jet power increases with the increasing BH spin, and concentrates in the inner region of the disk-corona. In addition, we use a sample consisting of 37 radio loud quasars to explore their jet production mechanism, and show that our jet formation mechanism can simulate almost all sources with high power jet, which fails to be explained by the Blandford-Znajek （BZ） process.

关 键 词：accretion and accretion disks jets CORONA 

分 类 号：O358[理学—流体力学] TP333.35[理学—力学]