34 citations · 34 across the 1 of their papers we have counts for
2 papers
gr-qc2022★ 34 cited
Dynamical photon sphere and time evolving shadow around black holes with temporal accretion
Yasutaka Koga, Nobuyuki Asaka, Masashi Kimura +1
A photon sphere is known as the geometrical structure shaping a black hole shadow. The mechanism is well understood for static or stationary black hole spacetimes such as the Schwa…
gr-qc2020
Do black hole shadows merge?
Kazumasa Okabayashi, Nobuyuki Asaka, Ken-ichi Nakao
The so-called black hole shadow is not a silhouette of a black hole but an image of a collapsing object or a white hole. Hence it is non-trivial whether black hole shadows merge wi…