H
Hiromichi Tagawa
Researcher at Tohoku University
Publications - 38
Citations - 945
Hiromichi Tagawa is an academic researcher from Tohoku University. The author has contributed to research in topics: Active galactic nucleus & LIGO. The author has an hindex of 13, co-authored 32 publications receiving 487 citations. Previous affiliations of Hiromichi Tagawa include Eötvös Loránd University & University of Tokyo.
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Formation and Evolution of Compact Object Binaries in AGN Disks
TL;DR: In this paper, the authors performed one-dimensional body simulations combined with a semi-analytical model which includes the formation, disruption, and evolution of binary self-consistently.
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Mass-gap Mergers in Active Galactic Nuclei
TL;DR: In this article, the authors compare the properties of these observed events to the theoretical models of mergers in active galactic nuclei (AGN) disks, which are obtained by performing one-dimensional $N$-body simulations combined with semi-analytical prescriptions.
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Black Hole Formation in the Lower Mass Gap through Mergers and Accretion in AGN Disks
TL;DR: In this paper, the authors compute the properties of AGN-assisted mergers involving neutron stars and black holes, accounting for accretion, and find that mergers in which one of the objects is in the lower mass gap represent up to $4$% of all the objects detected by LIGO/Virgo.
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Spin Evolution of Stellar-mass Black Hole Binaries in Active Galactic Nuclei
TL;DR: In this article, a semi-analytical model of binary formation and evolution in active galactic nuclei (AGN) disks was proposed to detect the astrophysical origin of gravitational wave (GW) events.
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Making a Supermassive Star by Stellar Bombardment
TL;DR: In this article, it was shown that stellar collisions may be sufficiently frequent and energetic to inhibit the contraction of the massive protostar, avoiding strong UV radiation driven outflows, and allowing it to continue growing into an SMS.