Výsledky vyhledávání - "Watarai, Daiki"

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Post-innermost stable circular orbit ringdown of a rapidly spinning black hole: mass ratio dependence of higher harmonic quasi-normal mode excitation

Autor: Watarai, Daiki

In a binary merger with a small mass ratio, as the secondary body approaches the innermost stable circular orbit (ISCO) of the primary black hole, the motion transitions from the adiabatic inspiral to the plunge governed by the geodesic equation. The

Externí odkaz: http://arxiv.org/abs/2408.16747

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Slowly decaying ringdown of a rapidly spinning black hole II: Inferring the masses and spins of supermassive black holes with LISA

Autor: Watarai, Daiki, Oshita, Naritaka, Tsuna, Daichi

Electromagnetic observations reveal that almost all galaxies have supermassive black holes (SMBHs) at their centers, but their properties, especially their spins, are not fully understood. Some of the authors have recently shown [Oshita and Tsuna (20

Externí odkaz: http://arxiv.org/abs/2403.12380

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Physically consistent gravitational waveform for capturing beyond general relativity effects in the compact object merger phase

Autor: Watarai, Daiki, Nishizawa, Atsushi, Cannon, Kipp

The merger phase of compact binary coalescences is the strongest gravity regime that can be observed. To test the validity of general relativity (GR) in strong gravitational fields, we propose a gravitational waveform parameterized for deviations fro

Externí odkaz: http://arxiv.org/abs/2309.14061

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