black hole ringdown 1gravitational wave spectroscopy 1odd-parity perturbations 1perfect fluid accretion 1time-domain analysis 1
From the 1 of 2 linked papers with an AI index.
2 papers
gr-qc2026
Odd-parity ringdown gravitational waves of a spherically symmetric black hole with perfect fluid accretion
Rikuto Ohashi, Yasutaka Koga, Hiroyuki Nakano +2
The paper analyzes how the odd‑parity ringdown gravitational waves of a Schwarzschild black hole are affected by steady, spherically symmetric accretion of a perfect fluid, derivin…
gr-qc2026
Ringdown in Vaidya spacetimes: time-dependent frequencies, Penrose limit and time-domain analyses
Chul-Moon Yoo, Masashi Kimura, Akihiro Ishibashi +1
We examine the possible characterization of ringdown waves in a dynamical Vaidya spacetime using the Penrose limit geometry around the dynamical photon sphere. In the case of a sta…