2 papers
astro-ph.HE2026
An Exact Engine for Black-Hole Jets
Yu Wang
For fifty years the Blandford--Znajek mechanism has been a mechanism and not an exact solution: force-free electrodynamics on a prescribed metric, with the jet's own field carrying…
gr-qc2021
On the Counter-Rotation of Closed Timelike Curves
Yuanyuan Duan, Fangxun Liu, Yu Wang +1
While it is tempting to think of closed timelike curves (CTCs) around rotating bodies such as a black hole as being "caused" by the rotation of the source, Andréka et al. pointed o…