Circular orbits and accretion process near a regular phantom black hole

Ditta, Allah; Abbas, G.

doi:10.1007/s10714-020-02724-9

Cited by 18 publications

(5 citation statements)

References 52 publications

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“…[34][35][36]. Further, Abbas and Ditta obtained the useful properties of accretion for motivation of GR onto a class of BHs [37][38][39][40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 98%

Constraining study of circular orbits and accretion disk around nonlinear electrodynamics black hole

Ditta

Mustafa

Abbas

et al. 2023

J. Cosmol. Astropart. Phys.

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The very latest observation of M87 supermassive black hole (BH) by the Event Horizon Telescope (EHT) provides the accretion onto BHs is an interesting study in the theory of gravity. We study the geodesics structure and accretion near a nonlinear electrodynamics BH in strong and weak field approximations. These approximations provide the disc-like structure under the geodesic motion and accretion around the BH. Near the equatorial plane, we provide some new reasons to make circular orbits and accretion of test particles around the BH. Then we investigate perturbations, the critical speed of the fluid and the mass accretion rate of particles around the central object. The physical validity of this study shows that the parameter β and Q play an important role in the circular orbits and the mass accretion rate in strong and weak field approximations.

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“…[34][35][36]. Further, Abbas and Ditta obtained the useful properties of accretion for motivation of GR onto a class of BHs [37][38][39][40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 98%

Constraining study of circular orbits and accretion disk around nonlinear electrodynamics black hole

Ditta

Mustafa

Abbas

et al. 2023

J. Cosmol. Astropart. Phys.

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“…As a consequence, the formation of accretion discs around BHs depends on comprehending orbital and epicyclic frequencies. Furthermore, the geodesic form and accretion disk have been investigated in the literature for a variety of BHs [14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Dyonic ModMax black hole through accretion disk

Shahzad,

Abbas,

Rehman

et al. 2024

Eur. Phys. J. C

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In the present study, we probe the geodesic motion and accretion of particles around the spherically symmetric Dyonic ModMax black hole using isothermal fluid. The geodesic motion of the particles around the black hole leads to the formation of disk like structure during the accretion process. We compute the radiant temperature, radioactive efficiency, radiant flux energy, circular orbits and observe the behavior of particles within stable circular orbits in the equatorial plane. We examine how the particles are perturbed during the process by using restoring forces and the oscillatory behavior of the particles surrounding a compact object and also investigate the fluid’s critical flow and maximum accretion rate. Our findings demonstrate how the black hole parameter $$\gamma $$ γ and charge Q affect the circular geodesic of particles as well as the maximum accretion rate of the Dyonic ModMax black hole.

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“…Additionally, Salahshoor and Nozari [23] studied the circular orbits and accretion discs in a class of Horndeski/Galileon BHs using a similar approach. Moreover, in [24], Abbas and Ditta have investigated the circular accretion near a regular phantom BH.…”

Section: Introductionmentioning

confidence: 99%

Accretion disc around black hole in Einstein-$SU(N)$ non-linear sigma model

Abbas¹,

Rehman²,

Usama³

et al. 2023

Preprint

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The accretion of matter onto celestial bodies like black holes and neutron stars is a natural phenomenon that releases up to 40% of the matter's rest-mass energy, which is considered a source of radiation. In active galactic nuclei and X-ray binaries, huge luminosities are observed as a result of accretion. Using isothermal fluid, we examine the accretion and geodesic motion of particles in the vicinity of a spherically symmetric black hole spacetime in the Einstein-SU (N ) non-linear sigma model. In the accretion process, the disk-like structure is produced by the geodesic motion of particles near the black hole. We determine the innermost stable circular orbit, energy flux, radiation temperature, and radioactive efficiency numerically. In the equatorial plane, we investigate the mobility of particles with stabilities that form circular orbits. We examine perturbations of a test particle by using restoring forces and particle oscillations in the vicinity of the black hole. We analyze the maximum accretion rate and critical flow of the fluid. Our findings demonstrate how parameter N influences the circular motion of a test particle as well as the maximum accretion rate of the black hole in the Einstein-SU (N ) non-linear sigma model.

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Circular orbits and accretion process near a regular phantom black hole

Cited by 18 publications

References 52 publications

Constraining study of circular orbits and accretion disk around nonlinear electrodynamics black hole

Constraining study of circular orbits and accretion disk around nonlinear electrodynamics black hole

Analysis of Dyonic ModMax black hole through accretion disk

Accretion disc around black hole in Einstein-$SU(N)$ non-linear sigma model

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