Gravitational Larmor precession

IF 4.2 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2023-08-09 DOI:10.1140/epjc/s10052-023-11858-4

Chandrachur Chakraborty, Parthasarathi Majumdar

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引用次数: 3

Abstract

Inspired by the reported existence of substantive magnetic fields in the vicinity of the central supermassive black holes in Sagittarius A* and Messier 87*, we consider test particle motion in the spacetime close to a generic spherical black hole in the presence of magnetic fields in its vicinity. Modelling such a spacetime in terms of an axisymmetric, non-rotating Ernst–Melvin–Schwarzschild black hole geometry with appropriate parameters, we compute the geodesic nodal-plane precession frequency for a test particle with mass, for such a spacetime, and obtain a non-vanishing result, surpassing earlier folklore that only axisymmetric spacetimes with rotation (non-vanishing Kerr parameter) can generate such a precession. We call this magnetic field-generated phenomenon Gravitational Larmor Precession. What we present here is a Proof of Concept incipient assay, rather than a detailed analysis of supermassive black holes with magnetic fields in their neighbourhood. However, for completeness, we briefly discuss observational prospects of this precession in terms of available magnetic field strengths close to central black holes in galaxies.

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引力拉莫尔进动

受人马座A*和Messier 87*中心超大质量黑洞附近存在实质性磁场的报道启发，我们考虑了在其附近存在磁场的一般球形黑洞附近的时空中测试粒子运动。我们以轴对称、非旋转的Ernst-Melvin-Schwarzschild黑洞几何形状和适当的参数对这样的时空进行建模，计算了具有质量的测试粒子在这样的时空中的测地节面进动频率，并获得了一个不消失的结果，超越了之前只有轴对称的旋转时空(非消失的Kerr参数)才能产生这样的进动的民间说法。我们称这种磁场产生的现象为引力拉莫尔进动。我们在这里展示的是一个概念验证的初步分析，而不是对周围有磁场的超大质量黑洞的详细分析。然而，为了完整起见，我们从星系中心黑洞附近的可用磁场强度的角度简要地讨论了这种进动的观测前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.