Accretion around a hairy black hole in the framework of gravitational decoupling theory  

作　　者：H.Rehman G.Abbas 

机构地区：[1]Department of Mathematics,The Islamia University of Bahawalpur,Bahawalpur Pakistan

出　　处：《Chinese Physics C》2023年第12期180-194,共15页中国物理C（英文版）

摘　　要：We investigate astrophysical accretion onto a static and spherically symmetric hairy black hole withinthe framework of gravitational decoupling. To achieve this goal, we examine the accretion procedure for severaltypes of perfect fluids, including polytropic fluid and ultra-stiff, ultra-relativistic, radiation, and sub-relativistic isothermalfluids. Moreover, we determine the critical or sonic points for numerous fluid forms that are accreting ontothe black hole by utilizing the Hamiltonian dynamical approach. Additionally, the closed form of the solutions arepresented for a number of fluids, which are represented in phase diagram curves. We estimate the mass accretion rateof a static and spherically symmetric hairy black hole within the framework of gravitational decoupling. These findingsare helpful in constraining the parameters of black holes while physical matter accretes onto the black holes.

关 键 词：general relativity astrophysical accretion black hole 

分 类 号：P145.8[天文地球—天体物理]