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• W3208659537 abstract "A test particle possessing spin angular momentum moves along a non-geodesic path due to an additional spin-curvature force. We study the spinning test particle moving in the vicinity of the electrically charged black hole formation in Eddington-inspired Born-Infeld (EiBI) gravity. Through the numerical analysis of its effective potential and orbits, it is found that the orbital eccentricity reduces as the deviation parameter $kappa$ increases. By comparing the orbits for the observed stars around Sagittarius A*, we conclude that the observed orbits with too large radii can not give a stringent constraint with acceptable magnitude. To dig out the potential observation effects of the relations between the orbits and parameter $kappa$, we mainly focus on the orbits in the vicinity of black hole in this paper. The parameters of inner most stable circular orbit (ISCO) decrease monotonously with $kappa$ when the spin angular momentum is small, however they change non-monotonously with $kappa$ when the spin is large enough. Moreover, the spin dependences of ISCO parameters have similar behavior to that of Reissner-Nordstrom (RN) black hole. We analyze the causality of the circular orbits by using the superluminal constraint condition as well. As a result, two new parameter regions may emerge in case of large $kappa$, where the particle has two stable circular orbits with one subluminal and the other superluminal." @default.
• W3208659537 created "2021-11-08" @default.
• W3208659537 creator A5025166618 @default.
• W3208659537 creator A5064462313 @default.
• W3208659537 creator A5071887725 @default.
• W3208659537 date "2022-04-04" @default.
• W3208659537 modified "2023-09-26" @default.
• W3208659537 title "Motion of spinning particles around electrically charged black hole in Eddington-inspired Born–Infeld gravity" @default.
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• W3208659537 doi "https://doi.org/10.1140/epjc/s10052-022-10229-9" @default.
• W3208659537 hasPublicationYear "2022" @default.
• W3208659537 type Work @default.
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