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5 papers · 2 filters
Dynamics of extended bodies with spin-induced quadrupole in Kerr spacetime: generic orbits
Wen-Biao Han, Ran Cheng
We discuss motions of extended bodies in Kerr spacetime by using Mathisson-Papapetrou-Dixon equations. We firstly solve the conditions for circular orbits, and calculate the orbita…
Twisted Black Hole Is Taub-NUT
Yen Chin Ong
Recently a purportedly novel solution of the vacuum Einstein field equations was discovered: it supposedly describes an asymptotically flat twisted black hole in 4-dimensions whose…
Exotic orbits due to spin-spin coupling around Kerr black holes
Wen-Biao Han, Shu-Cheng Yang
We report exotic orbital phenomena of spinning test particles orbiting around a Kerr black hole, i.e., some orbits of spinning particles are asymmetrical about the equatorial plane…
Fast Evolution and Waveform Generator for Extreme-Mass-Ratio Inspirals in Equatorial-Circular Orbits
Wen-Biao Han
In this paper we discuss the development of a fast and accurate waveform model for the quasi-circular orbital evolution of extreme-mass-ratio-inspirals (EMRIs). This model simply e…
Exact solutions in f(R) theory of gravity
Changjun Gao, You-Gen Shen
We find a new method for looking for the static and spherically symmetric solutions in theory of gravity. With this method, a number of new solutions in terms of the analyti…