1 citations · 1 across the 5 of their papers we have counts for
5 papers
The shadow radius lower bound is more robust than the photon sphere radius lower bound in -dimensional Einstein gravity
Jiaqi Fu, Yong Song
The photon sphere and the black hole shadow are two closely related geometric features of strong-field spacetimes: the photon sphere is a hypersurface foliated by circular null geo…
A universal lower bound on the photon sphere radius in higher-dimensional black holes
Yong Song, Jiaqi Fu, Yiting Cen
The photon sphere, a hypersurface of circular null geodesics, plays a fundamental role in characterizing black hole spacetimes, influencing phenomena such as black hole shadows, gr…
Bounds on the photon sphere radius for spherically symmetric black holes in n-dimensional Einstein gravity
Yong Song, Jiaqi Fu, Yiting Cen
The photon sphere, a hypersurface of null circular geodesics, plays a fundamental role in characterizing black hole spacetimes, influencing phenomena such as black hole shadows, gr…
Robust topological invariants of timelike circular orbits for spinning test particles in black hole spacetimes
Yong Song, Jiaqi Fu, Yiting Cen
The spin-curvature coupling in the Mathisson-Papapetrou-Dixon (MPD) formalism induces non-geodesic motion, shifting the orbital parameters of spinning test particles in black hole…
The existence and upper bound for stable photon spheres in static spherically symmetric black holes
Yong Song, Jiaqi Fu, Yiting Cen
In this work, we establish the existence conditions and a universal upper bound on the radius of stable photon spheres (SPS) outside the event horizons of static, spherically symme…