Motion of a Test Particle in the Kerr-Newman De/Anti De Sitter Space-Time

• 作者: Irom Ablu Meitei Kangujam Yugindro Singh Shanjit Heisnam
• 来源期刊: 天文学与天体物理学国际期刊(英文)
• 学科: 地球科学
• 关键词: GEODESIC Equations Kerr-Newman De/Anti DE SITTER Black Hole Inner and Outer Event HORIZONS Stable Circular ORBITS
• 年，卷（期）: 2014,（2）
• 页码范围: 365-373
• 页数: 9页
• 分类号: P1

摘要

In this paper we obtain the geodesic equations of motion of a test particle (charged particle and photon) in the Kerr-Newman de/anti de Sitter black hole by using the Hamilton-Jacobi equation. We determine the positions of the inner, outer and cosmological horizons of the black hole. In terms of the effective potentials, the trajectory of the test particle within the inner horizon is studied. It appears that there are stable circular orbits of a charged particle and photon within the inner horizon and that the combined effect of the charge and rotation of the Kerr-Newman de/anti de Sitter black hole and the coupling between the charge of the test particle and the electromagnetic field of the black hole may account for this.