Charged particle dynamics in the surrounding of Schwarzschild anti-de Sitter black hole with topological defect immersed
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Regular Article - Theoretical Physics
Charged particle dynamics in the surrounding of Schwarzschild anti-de Sitter black hole with topological defect immersed in an external magnetic field Sidra Shafiq1, Saqib Hussain2,a , Muhammad Ozair3 , Adnan Aslam4,b , Takasar Hussain3 1
Department of Physics, Government College University (GCU), Lahore, Pakistan Institute of Astronomy, Geophysics and Atmospheric Sciences (IAG), University of São Paulo (USP), São Paulo, Brazil 3 Department of Mathematics, COMSATS University, Attock Campus, Attock, Pakistan 4 School of Electrical Engineering and Computer Science (SEECS), National University of Sciences and Technology (NUST), Islamabad, Pakistan
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Received: 21 March 2020 / Accepted: 31 July 2020 © The Author(s) 2020
Abstract In this paper, geodesic motion of the charged particles in the vicinity of event horizon of Schwarzschild antide-Sitter black hole (BH) with topological defects has been investigated. Weakly magnetized environment is considered in the surrounding of BH which only effects the motion of the particles and doesn’t effect the geometry of the BH. Hence, particles are under the influence of gravity and electromagnetic forces. We have explored the effect of magnetic field on the trajectories of the particles and more importantly on the position of the innermost stable circular orbit. It is observed that the trajectories of the particles in the surrounding of BH are chaotic. Escape conditions of the particles under the influence of gravitomagnetic force are also discussed. Moreover, the escape velocity of particles and its different features have been investigated in the presence and absence of magnetic field. Effect of dark energy on the size of event horizon, mass of the BH and stability of the orbits of the particles have also been explored in detail. These studies can be used to estimate the power of relativistic jets originated from the vicinity of BH.
1 Introduction Universe is in accelerating phase, was first confirmed by the Supernova of type Ia, large scale structure [1] and quasars which are the most luminous persistent sources in the universe, observed up to redshifts of z ≈ 7 [2]. Quasars can be used to study the cosmology of our universe in a relatively unexplored adolescence. There is an increase in the dark energy (DE) density if one consider an evolution of a e-mail:
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the equation of state (EoS) of DE [3]. If this model is right, DE may be in a particularly virulent and implausible form called phantom energy [4]. There are different models proposed to understand the nature of DE in our universe [5]. So far, several scalar field DE models have been studied such as quintessence [6], phantom [4], K-essence [7], tachyon [8] and quintom [9]. The Big Rip scenario [10] could justify the DE, that such energy is called phantom energy. The nature of the EoS of phantom energy is supernegative which leads to the growing energy density of phantom energ
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