Adiabatic theory in Kerr spacetimes

IF 2.1 4区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS General Relativity and Gravitation Pub Date : 2024-05-26 DOI:10.1007/s10714-024-03255-3
Kuantay Boshkayev, Gulmira Nurbakyt, Hernando Quevedo, Gulnara Suliyeva, Abylaykhan Tlemissov, Zhanerke Tlemissova, Anar Dalelkhankyzy, Aliya Taukenova, Ainur Urazalina, Zdenek Stuchlík, Nurzada Beissen, Sholpan Gumarova
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Abstract

We outline the essential features of the adiabatic theory and demonstrate how test particle motion in general relativity may be investigated using it. The theory relies on adiabatic invariants and vector elements of the orbits. We derive a specific representation of the Kerr metric in harmonic coordinates, which enables us to obtain a general formula for the perihelion shift of test particles orbiting on the non-equatorial plane of a rotating central object. This proves the applicability of the adiabatic theory in Einstein’s gravity. We demonstrate that, for the individual effects of the gravitational source mass and angular momentum up to the second order, the principle of superposition is satisfied. We show that, in addition to its simplicity, the adiabatic theory produces correct results that, in the limiting cases, correspond to the ones reported in the literature.

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克尔时空中的绝热理论
我们概述了绝热理论的基本特征,并演示了如何利用该理论研究广义相对论中的检验粒子运动。该理论依赖于轨道的绝热不变量和矢量元素。我们推导出谐波坐标中克尔度量的一个特定表示,这使我们能够获得在旋转中心物体的非赤道面上运行的检验粒子近日点偏移的一般公式。这证明了绝热理论在爱因斯坦引力中的适用性。我们证明,对于引力源质量和角动量的二阶以下单独效应,叠加原理是满足的。我们证明,绝热理论除了简单之外,还能产生正确的结果,在极限情况下,这些结果与文献中报道的结果一致。
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来源期刊
General Relativity and Gravitation
General Relativity and Gravitation 物理-天文与天体物理
CiteScore
4.60
自引率
3.60%
发文量
136
审稿时长
3 months
期刊介绍: General Relativity and Gravitation is a journal devoted to all aspects of modern gravitational science, and published under the auspices of the International Society on General Relativity and Gravitation. It welcomes in particular original articles on the following topics of current research: Analytical general relativity, including its interface with geometrical analysis Numerical relativity Theoretical and observational cosmology Relativistic astrophysics Gravitational waves: data analysis, astrophysical sources and detector science Extensions of general relativity Supergravity Gravitational aspects of string theory and its extensions Quantum gravity: canonical approaches, in particular loop quantum gravity, and path integral approaches, in particular spin foams, Regge calculus and dynamical triangulations Quantum field theory in curved spacetime Non-commutative geometry and gravitation Experimental gravity, in particular tests of general relativity The journal publishes articles on all theoretical and experimental aspects of modern general relativity and gravitation, as well as book reviews and historical articles of special interest.
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