Presentations

Invited Talks

• Hiroki Takeda,
  Gravity Meets Quantum Measurements: Testing General Relativity with Gravitational Waves,
  3rd Joint Workshop on General Relativity and Cosmology, Saitama, Japan, March 2025.
• Hiroki Takeda,
  Testing Gravity through Gravitational Wave Observations,
  Bottom-up particle and gravity fusion theory and cosmological observations, Niigata University, Niigata, Japan, December 2024.
• Hiroki Takeda,
  Testing gravity through gravitational-wave observation of compact binary mergers,
  Data Oriented Astronomy 2024, The Institute of Statistical Mathematics, Tokyo, Japan, October 2024.
• Hiroki Takeda,
  Observations of gravitational waves from compact binary mergers,
  The First Young Researchers' Workshop on Multi-Messenger Astronomy, Tokyo, Japan, March 2024.
• Hiroki Takeda,
  Probing scalar polarizations in gravitational waves,
  GW research exchange meeting, online, June 2023.
• Hiroki Takeda,
  Scalar polarization window in gravitational-wave signals from compact binary coalescences,
  Seminar, Waseda University, Tokyo, Japan, May 2023.
• Hiroki Takeda,
  Polarization tests by DECIGO,
  21st DECIGO workshop, online, December 2022.
• Hiroki Takeda,
  Consistent search for polarization modes of gravitational waves from generation to detection,
  Observational Cosmology Summer Workshop in 2022, Hamamatsu, Japan, August 2022.
• Hiroki Takeda,
  Polarization test of gravitational waves from compact binary coalescences,
  Seminar at Institute of Particle Physics and Astrophysics, School of Physics, Huazhong University of Science and Technology, Wuhan, China, November 2018.

International Conference

Oral

• Hiroki Takeda, Shinji Tsujikawa, Atsushi Nishizawa,
  Gravitational-wave constraints on scalar-tensor gravity from a black-hole and neutron star binary,
  The 32th Workshop on General Relativity and Gravitation in Japan – JGRG32, Nagoya, Japan, November 2023.
• Hiroki Takeda, Yusuke Manita, Hidetoshi Omiya, Takahiro Tanaka,
  Scalar polarizations window in gravitational wave signals,
  14th Edoardo Amaldi Conference on Gravitational Waves, online, July 2023.
• Hiroki Takeda, Soichiro Morisaki, Atsushi Nishizawa,
  Search for mixture of scalar-tensor polarizations of gravitational waves,
  23rd International Conference on General Relativity and Gravitation, Beijing, China, July 2022.
• Hiroki Takeda, Soichiro Morisaki, Atsushi Nishizawa,
  Scalar-tensor mixed polarization search for gravitational waves from compact binary coalescences,
  Gravitational Wave Physics and Astronomy Workshop 2021, Hannover, Germany, December 2021.
• Hiroki Takeda, Soichiro Morisaki, Atsushi Nishizawa,
  Testing gravity theory with gravitational wave polarizations,
  Innovative Area "Gravitational Wave Physics and Astronomy: Genesis" Group A Winter Camp, Kyoto, Japan, January 2021.
• Hiroki Takeda, Atsushi Nishizawa, Soichiro Morisaki,
  Polarization tests of GW170814 and GW170817 using waveforms consistent with alternative theories of gravity,
  7th KAGRA International Workshop, online (Taiwan in-person), December 2020.
• Hiroki Takeda, Tomoya Kinugawa, Hiroya Yamaguchi,
  Ability of DECIGO to constrain the Type Ia supernova progenitor system,
  Gravitational Wave Physics and Astronomy Workshop 2019, Tokyo, Japan, October 2019.
• Hiroki Takeda, Atsushi Nishizawa, Yuta Michimura, Koji Nagano, Kentaro Komori, Masaki Ando, Kazuhiro Hayama,
  Probing nontensorial polarization of inspiral gravitational waves with the third-generation detectors,
  JGRG28, Tokyo, Japan, November 2018.
• Hiroki Takeda, Atsushi Nishizawa, Yuta Michimura, Koji Nagano, Kentaro Komori, Masaki Ando, Kazuhiro Hayama,
  Polarization test of gravitational waves from compact binary coalescences,
  15th Marcel Grossmann Meeting, Rome, Italy, July 2018.
• Hiroki Takeda, Atsushi Nishizawa, Yuta Michimura, Koji Nagano, Kentaro Komori, Masaki Ando, Kazuhiro Hayama,
  Parameter estimation with inspiral waveforms of compact binary coalescences including nontensorial gravitational waves polarizations,
  19th KAGRA face-to-face meeting, Osaka, Japan, May 2018.

Poster

• Hiroki Takeda, Takahiro Tanaka,
  Strong lensing of gravitational waves with modified propagation,
  COSMO'24, Kyoto, Japan, October 2024.
• Hiroki Takeda, Takahiro Tanaka,
  Strong gravitational lensing of gravitational waves with modified propagation,
  LIGO-Virgo-KAGRA meeting, Barcelona, Spain, September 2024.
• Hiroki Takeda, Yusuke Manita, Hidetoshi Omiya, Takahiro Tanaka,
  Scalar gravitational wave and fifth force,
  28th KAGRA Face to Face Meeting, online, December 2022.
• Hiroki Takeda, Atsushi Nishizawa, Soichiro Morisaki,
  Search for scalar-tensor mixed polarization of gravitational waves,
  14th Edoardo Amaldi Conference on Gravitational Waves, online, July 2021.
• Hiroki Takeda, Atsushi Nishizawa, Soichiro Morisaki,
  Tests of alternative theories of gravity through gravitational-wave polarization modes,
  26th Face to Face Meeting, online, December 2020.
• Hiroki Takeda, Atsushi Nishizawa, Yuta Michimura, Koji Nagano, Kentaro Komori, Masaki Ando, Kazuhiro Hayama,
  Prospects for gravitational-wave polarization test from compact binary coalescences with next-generation detectors,
  GR22 + Amaldi13, Valencia, Spain, July 2019.