2 papers
gr-qc2026
Ellis-Bronnikov Wormhole Shadows with Spherically Symmetric Accretion Flow
Mikiya M. Takahashi, Keisuke Nakashi
We investigate the observational differences between the Ellis--Bronnikov (EB) wormhole and the Schwarzschild black hole (BH) by performing general relativistic radiative transfer…
gr-qc2026
Probing higher curvature gravity via ringdown with overtones
Keisuke Nakashi, Masashi Kimura, Hayato Motohashi +1
We investigate metric perturbations of a spherically symmetric black hole in higher curvature gravity. We show that higher curvature corrections deform the near-horizon region of t…