At the Shanghai Astronomical Observatory, he is a member in the Gravitational Wave and Relativistic Fundamental Astronomy group.  Previously, he served as a project assistant professor at the National Astronomical Observatory of Japan in 2023 and held postdoctoral positions at Columbia University (2022-2023), Tohoku University (2020-2022), and Eötvös University (2017-2020). He earned my PhD in Astrophysics from the University of Tokyo in 2017. By 2024, he has published 26 articles in major scientific journals in the field of astrophysics, including 17 first author papers, with a total citation count of more than 1200.

Gravitational wave astrophysics, black hole astrophysics, accretion disks, disk-satellite interactions, multi-messenger astrophysics, transients, stellar dynamics

1 Tagawa, Hiromichi; Kimura, Shigeo S.; Haiman, Zoltán; Perna, Rosalba; Bartos, Imre; Shock Cooling and Breakout Emission for Optical Flares Associated with Gravitational-wave Events, 2024, ApJ, 966, 21

2 Tagawa, Hiromichi; Haiman, Zoltán; Flares from stars crossing active galactic nucleus discs on low-inclination orbits, 2023, MNRAS, 526, 69

3 Tagawa, Hiromichi; Kimura, Shigeo S.; Haiman, Zoltán; Perna, Rosalba; Bartos, Imre; Observable Signature of Merging Stellar-mass Black Holes in Active Galactic Nuclei, 2023, ApJ, 950, 13

4 Samsing, J.; Bartos, I.; D'Orazio, D. J.; Haiman, Z.; Kocsis, B.; Leigh, N. W. C.; Liu, B.; Pessah, M. E.; Tagawa, H.; AGN as potential factories for eccentric black hole mergers, 2022, Nature, 603, 237

5 Tagawa, Hiromichi; Kimura, Shigeo S.; Haiman, Zoltán; Perna, Rosalba; Tanaka, Hidekazu; Bartos, Imre; Can Stellar-mass Black Hole Growth Disrupt Disks of Active Galactic Nuclei? The Role of Mechanical Feedback, 2022, ApJ, 927, 41

6 Tagawa, Hiromichi; Kocsis, Bence; Haiman, Zoltán; Bartos, Imre; Omukai, Kazuyuki; Samsing, Johan; Mass-gap Mergers in Active Galactic Nuclei, 2021, ApJ, 908, 194

7 Tagawa, Hiromichi; Kocsis, Bence; Haiman, Zoltán; Bartos, Imre; Omukai, Kazuyuki; Samsing, Johan, Eccentric Black Hole Mergers in Active Galactic Nuclei, 2021, ApJ, 907, 20

8 Tagawa, Hiromichi; Haiman, Zoltán; Kocsis, Bence; Formation and Evolution of Compact-object Binaries in AGN Disks, 2020, ApJ, 898, 25

9 Tagawa, Hiromichi; Haiman, Zoltan; Kocsis, Bence; Making a Supermassive Star by Stellar Bombardment, 2020, 892, 36

10 Tagawa, Hiromichi; Saitoh, Takayuki R.; Kocsis, Bence; Compact Object Mergers Driven by Gas Fallback, 2018, Phys. Rev. Lett., 120, 261101