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gr-qc2023
Inspiral and Plunging Orbits in Kerr-Newman Spacetimes
Yu-Chung Ko, Da-Shin Lee, Chi-Yong Lin
We present the analytical solutions for the trajectories of particles that spiral and plunge inward the event horizon along the timelike geodesics following general non-equatorial…
astro-ph.CO2023★ 46 cited
Primordial perturbations from ultra-slow-roll single-field inflation with quantum loop effects
Shu-Lin Cheng, Da-Shin Lee, Kin-Wang Ng
It is known that the single-field inflation with a transient ultra-slow-roll phase can produce a large curvature perturbation at small scales for the formation of primordial black…
gr-qc2023★ 13 cited
Homoclinic orbits in Kerr-Newman black holes
Yi-Ting Li, Chen-Yu Wang, Da-Shin Lee +1
We present the exact solutions of the homoclinic orbits for the timelike geodesics of the particle on the general nonequatorial orbits in the Kerr-Newman black holes. The homoclini…