output
20002026
most citedStructured ionized winds shooting out from a quasar at relativistic speeds

49 citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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Showing gr-qcShow all

2 papers · 1 filter

gr-qc2026★ 2 cited

Strong-deflection expansion of the deflection angle near a degenerate photon sphere

Takahisa Igata, Tadashi Sasaki, Naoki Tsukamoto

We present a strong-deflection expansion for the deflection angle of light rays scattered near a degenerate photon sphere in asymptotically flat, static, and spherically symmetric…

gr-qc2025★ 3 cited

Strong gravitational lensing by a Reissner-Nordström naked singularity with a marginally unstable photon sphere

Tadashi Sasaki

We investigate strong gravitational lensing by a marginally unstable photon sphere in a Reissner-Nordström naked singularity spacetime. Using the Picard-Fuchs equation, we derive f…