378 citations · 2.2k across the 36 of their papers we have counts for
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The possible existence of Pop III NS-BH binary and its detectability
Tomoya Kinugawa, Takashi Nakamura, Hiroyuki Nakano
In the population synthesis simulations of Pop III stars, many BH (Black Hole)-BH binaries with merger time less than the age of the Universe are formed, while NS (Ne…
Gravitational wave quasinormal mode from Population III massive black hole binaries in various models of population synthesis
Tomoya Kinugawa, Hiroyuki Nakano, Takashi Nakamura
Focusing on the remnant black holes after merging binary black holes, we show that ringdown gravitational waves of Population III binary black holes mergers can be detected with th…
The detection of quasinormal mode with would prove a sphere soaking in the ergoregion of the Kerr space-time
Hiroyuki Nakano, Takashi Nakamura, Takahiro Tanaka
Recent numerical relativity simulations of mergers of binary black holes suggest that the maximum final value of is for the coalescence of two equal mass black ho…
How close can we approach the event horizon of the Kerr black hole from the detection of the gravitational quasinormal modes?
Takashi Nakamura, Hiroyuki Nakano
Using the WKB method, we show that the peak location () of the potential, which determines the quasinormal mode frequency of the Kerr black hole, obeys an accurate em…
Possible confirmation of the existence of ergoregion by the Kerr quasinormal mode in gravitational waves from Pop III massive black hole binary
Tomoya Kinugawa, Hiroyuki Nakano, Takashi Nakamura
The existence of the ergoregion of the Kerr space-time has not been confirmed observationally yet. We show that the confirmation would be possible by observing the quasinormal mode…