Abstract
We analyze the stability of circular geodesics for timelike as well as null geodesics of the Kerr BH spacetime with rotation parameter on the equatorial plane by Lyapunov stability analysis. Also, we verify the results of stability by presenting the phase portrait for both timelike and null geodesics. Further, by reviewing the Kosambi–Cartan–Chern (KCC) theory, we analyze the Jacobi stability for Kerr spacetime and present a comparative study of the methods used for stability analysis of geodesics.
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Acknowledgements
P.S. would like to thank University Grants Commission \(\left( UGC\right) \), New Delhi, India for providing the financial support as a Junior Research Fellow through UGC-Ref.No. 1060/CSIR-UGC NET-JUNE2018. H.N. thankfully acknowledges the financial support provided by Science and Engineering Research Board(SERB), India through grant no. EMR/2017/000339. The authors also acknowledge the facilities available at ICARD, Gurukula Kangri (Deemed to be University) Haridwar those were used during the course of this work.
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Singh, P., Nandan, H., Joshi, L.K. et al. Stability of circular geodesics in equatorial plane of Kerr spacetime. Eur. Phys. J. Plus 137, 263 (2022). https://doi.org/10.1140/epjp/s13360-022-02477-1
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DOI: https://doi.org/10.1140/epjp/s13360-022-02477-1