双黑洞合并面积增量及放能率  

The Area Increment and Exergonic Rate of Binary Black Holes Merger

作　　者：李宝霖 颜骏[2] LI Baolin;YAN Jun(College of Basic Courses Teaching,Qingdao University of Technology,Qingdao 266300,Shandong;College of Physics and Electronic Engineering,Sichuan Normal University,Chengdu 610066,Sichuan)

机构地区：[1]青岛工学院基础教育学院,山东青岛266300 [2]四川师范大学物理与电子工程学院,四川成都610066

出　　处：《四川师范大学学报（自然科学版）》2018年第6期800-806,共7页Journal of Sichuan Normal University（Natural Science）

基　　金：四川省教育厅自然科学基金(11ZA100)

摘　　要：在广义相对论框架下,采用线性微扰方法分别计算几种不同类型黑洞(Schwarzschild、ReissnerNordstrom、Kerr及Kerr-Newman)之间合并(双黑洞合并)后外视界的面积增量及放能率.结果表明:若黑洞带有角动量,则使合并后的外视界面积增量δA+及放能率η均增大;由于电荷的存在,若原2个子黑洞带同种电荷会使合并后的黑洞外视界面积增量δA+及放能率η均减小;则如果原子黑洞带异种电荷,反而使δA+及η均增大;然而如果只有一方带电,则对δA+及η没有影响.根据面积定理,黑洞带电有极限条件,超过临界值,2个带电黑洞将不能合并为一个黑洞;反之,理论上一个黑洞可"分裂"为2个部分(其中一个为极端黑洞,另一个可能为Ads空间).由于角动量的存在,放能率反而亦增大,因此黑洞所带角动量也应有个极限条件.这种发现可能为天文观测中区分不同类型及所带不同"毛"信息的黑洞及验证引力理论提供一种新的探索途径.The outer event horizon area increment and exergonic rate of binary black holes merger between different types of black holes(Schwarzschild,ReissnerNordstrom,Kerr and KerrNewman)are studied in the frames of general relativity with linear perturbation method.The results show that both of area incrementδA+and exergonic rateηwould increase if the black holes have angular momentum,and decrease if the original black holes contain like charges,but increase if they carry with unlike charges.However,there was no effect onδA+andηif only one original black hole is charged.Black holes with charges should have extreme condition according to Hawking that the event horizon of a black hole can never get smaller.So that black holes would never merge into one if the charges of black holes are more than critical condition,nevertheless,one black hole would split into two or maybe more“black holes”(one of them maybe a AdS space)in theory.Also the angular momentum of black holes should have a limit condition for its impact onη.The research reported in this paper provides a new exploration way to distinguish different kinds of and different information carried by black holes in astronomical observation.

关 键 词：黑洞合并 面积增量 放能率 紧致空间 

分 类 号：O412[理学—理论物理] P145[理学—物理]