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From the 1 of 8 linked papers with an AI index.

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20242026
most citedCOSMOS: A numerical relativity code specialized for PBH formation

1 citations · 1 across the 3 of their papers we have counts for

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8 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-qc20261 cited

COSMOS: A numerical relativity code specialized for PBH formation

Chul-Moon Yoo, Hirotada Okawa, Albert Escrivà +7

Primordial black holes (PBHs) are black holes generated in the early universe without having gone through stellar evolution. In the standard formation process, PBHs are formed from…

astro-ph.CO2026

Gravitational wave emission from nonspherical collapse in an early matter-dominated era using N-body simulations

Albert EscrivÃ, Tomohiro Harada, Kazunori Kohri +2

We study the dynamics of the collapse of a nonspherical overdense patch during an early matter-dominated era and the associated production of gravitational waves (GWs) using a semi…

gr-qc2026

Rotating wormholes in five dimensions with equal angular momenta: large asymmetry regime

Keiya Uemichi, Yasutaka Koga, Daiki Saito +2

We clarify the relationship between rotation and the energy condition for stationary rotating wormhole solutions of the Einstein equations coupled to a phantom field in five-dimens…

gr-qc2025

Primordial Black Hole Formation and Spin in Matter Domination Revisited

Weitao Ye, Yungui Gong, Tomohiro Harada +4

In this article, we calculate the mass distribution of primordial black holes (PBHs) formed in the matter-dominated (MD) era by the peak theory. We apply the Zel'dovich approximati…

gr-qc2025

Test particle motion around a black hole dressed with a spherically symmetric stationary fluid

Ariadna Uxue Palomino Ylla, Yasutaka Koga, Chul-Moon Yoo

We investigate the motion of a massive particle around a spherically symmetric black hole surrounded by a stationary and radial inflow of perfect fluid. The background spacetime is…