Tidal force effects and bound orbits in null naked singularity spacetime  

作　　者：Siddharth Madan Parth Bambhaniya 

机构地区：[1]P.D.Patel Institute of Applied Sciences,Charusat University,Anand-388421,Gujarat,India [2]International Centre for Space and Cosmology,School of Arts and Sciences,Ahmedabad University,Ahmedabad 380009,Gujarat,India

出　　处：《Chinese Physics C》2024年第11期193-202,共10页中国物理C（英文版）

摘　　要：Naked singularities form during the gravitational collapse of inhomogeneous matter clouds.The final nature of the singularity depends on the initial conditions of the matter properties and types of matter profiles.These naked singularities can also be divided into two types:null-like and timelike singularities.The spacelike singularity of the Schwarzschild black hole can be distinguished from the null and timelike naked singularity spacetimes.In light of this,we investigate the precession of timelike bound orbits in the null naked singularity spacetime,as well as tidal force effects and geodesic deviation features.As a result,we find that the orbital precession of the timelike bound orbits in null naked singularity spacetime could be distinguished from the Schwarzschild precession case.The radial component of the tidal force has an intriguing profile,whereas the angular component has a profile that is comparable to that of a Schwarzschild black hole scenario.The geodesic deviation equation is then solved numerically,yielding results that resemble Schwarzschild black holes.These characteristic features can then be used to discern among these singularities.

关 键 词：black hole naked singularity tidal force bound orbits 

分 类 号：P145.8[天文地球—天体物理] P131[天文地球—天文学]