Ryosuke Hirai's Homepage

Leading-Author papers

  1. "A two-stage formalism for common-envelope phases of massive stars"
    Ryosuke Hirai, Ilya Mandel
    accepted for publication in ApJL
    arXiv:2209.05328
  2. "Neutron stars colliding with binary companions: formation of hypervelocity stars, pulsar planets, bumpy superluminous supernovae and Thorne-Żytkow objects"
    Ryosuke Hirai, Philipp Podsiadlowski
    submitted to MNRAS
    arXiv:2208.00915
  3. "Conditions for accretion disc formation and observability of wind-accreting X-ray binaries"
    Ryosuke Hirai, Ilya Mandel
    Publications of the Astronomical Society of Australia, Volume 38, article id. e056 (2021)
    arXiv:2108.03774
  4. "Simulating the formation of η Carinae's surrounding nebula through unstable triple evolution and stellar merger-induced eruption"
    Ryosuke Hirai, Philipp Podsiadlowski, Stanley P. Owocki, Fabian R. N. Schneider, Nathan Smith
    Monthly Notices of the Royal Astronomical Society, Volume 503, Issue 3, pp.4276-4296 (2021)
    arXiv:2011.12434
  5. "Formation pathway for lonely stripped-envelope supernova progenitors: implications for Cassiopeia A"
    Ryosuke Hirai, Toshiki Sato, Philipp Podsiadlowski, Alejandro Vigna-Gomez, Ilya Mandel
    Monthly Notices of the Royal Astronomical Society, Volume 499, Issue 1, pp.1154-1171 (2020)
    arXiv:2008.05076
  6. "Comprehensive study of ejecta-companion interaction for core-collapse supernovae in massive binaries"
    Ryosuke Hirai, Philipp Podsiadlowski, Shoichi Yamada
    The Astrophysical Journal, Volume 864, Issue 2, article id. 119, 17pp. (2018)
    arXiv:1803.10808
  7. "The Origin of the Possible Massive Black Hole in the Progenitor System of iPTF13bvn"
    Ryosuke Hirai
    Monthly Notices of the Royal Astronomical Society: Letters, Volume 469, Issue 1, p.L94-L98 (2017)
    arXiv:1704.07663
  8. "Formation of the Progenitor of iPTF13bvn Revisited"
    Ryosuke Hirai
    Monthly Notices of the Royal Astronomical Society, Volume 466, Issue 4, p.3775-3783 (2017)
    arXiv:1612.05666
  9. "Hyperbolic Self-Gravity Solver for Large Scale Hydrodynamical Simulations"
    Ryosuke Hirai, Hiroki Nagakura, Hirotada Okawa, Kotaro Fujisawa
    Physical Review D, Volume 93, Issue 8, id.083006 (2016)
    arXiv:1602.05700
    Note: One of the figures were featured in the Physical Review D "Kaleidoscope"!
  10. "Possible Signatures of Ejecta-Companion Interaction in iPTF 13bvn"
    Ryosuke Hirai, Shoichi Yamada
    The Astrophysical Journal, Volume 805, Issue 2, article id. 170, 7 pp. (2015)
    arXiv:1504.01845
  11. "The Outcome of Supernovae in Massive Binaries; Removed Mass, and its Separation Dependence"
    Ryosuke Hirai, Hidetomo Sawai, Shoichi Yamada
    The Astrophysical Journal, Volume 792, Issue 1, article id. 66, 15 pp. (2014)
    arXiv:1404.4297

Co-Author papers

  1. "The Galactic underworld: The spatial distribution of compact remnants"
    David Sweeney, Peter Tuthill, Sanjib Sharma, Ryosuke Hirai
    accepted for publication in MNRAS
  2. "Common envelopes in massive stars II: The distinct roles of hydrogen and helium recombination"
    Mike Y. M. Lau, Ryosuke Hirai, Daniel J. Price, Ilya Mandel
    accepted for publication in MNRAS
    arXiv:2206.06411
  3. "Common envelope binary interaction simulations between a thermally-pulsating AGB star and a low mass companion"
    Miguel González-Bolívar, Orsola De Marco, Mike Y. M. Lau, Ryosuke Hirai, Daniel J. Price
    accepted for publication in MNRAS
    arXiv:2205.09749
  4. "An environment analysis of the Type Ib SN 2019yvr and the possible presence of an inflated binary companion"
    Ning-Chen Sun, Justyn R. Maund, Paul A. Crowther, Ryosuke Hirai, Amir Kashapov, Ji-Feng Liu, Liang-Duan Liu, Emmanouil Zapartas
    Monthly Notices of the Royal Astronomical Society, Volume 510, Issue 3, pp.3701-3715 (2022)
    arXiv:2111.06471
  5. "Common envelopes in massive stars: Towards the role of radiation pressure and recombination energy in ejecting red supergiant envelopes"
    Mike Y. M. Lau, Ryosuke Hirai, Miguel González-Bolívar, Daniel J. Price, Orsola De Marco, Ilya Mandel
    Monthly Notices of the Royal Astronomical Society, Volume 512, Issue 4, pp.5462-5480 (2022)
    arXiv:2109.10352
  6. "Rapid stellar and binary population synthesis with COMPAS"
    Team COMPAS (including R. Hirai)
    The Astrophysical Journal Supplement Series, Volume 258, Issue 2, id.34, 30 pp. (2022)
    arXiv:2109.10352
  7. "COMPAS: A rapid binary population synthesis suite"
    Team COMPAS (including R. Hirai)
    Journal of Open Source Software, vol. 7, issue 69, id. 3838 (2022)
  8. "Stellar core-merger-induced collapse: new formation pathways for black holes, Thorne-Żytkow objects, magnetars, and superluminous supernovae"
    Iminhaji Ablimit, Philipp Podsiadlowski, Ryosuke Hirai, James Wicker
    Monthly Notices of the Royal Astronomical Society, Volume 513, Issue 4, pp.4802-4813 (2022)
    arXiv:2108.08430
  9. "Supernova explosions in active galactic nuclei discs"
    Evgeni Grishin, Alexey Bobrick, Ryosuke Hirai, Ilya Mandel, Hagai B. Perets
    Monthly Notices of the Royal Astronomical Society, Volume 507, Issue 1, pp.156-174 (2021)
    arXiv:2105.09953
  10. "The observability of inflated companion stars after supernovae in massive binaries"
    Misa Ogata, Ryosuke Hirai, Kotaro Hijikawa
    Monthly Notices of the Royal Astronomical Society, Volume 505, Issue 2, pp.2485-2499 (2021)
    arXiv:2103.10111
  11. "Wind mass-loss rates of stripped stars inferred from Cygnus X-1"
    Coenraad J. Neijssel, Serena Vinciguerra, Alejandro Vigna-Gomez, Ryosuke Hirai, James C. A. Miller-Jones, Arash Bahramian, Thomas J. Maccarone, Ilya Mandel
    The Astrophysical Journal, Volume 908, Issue 2, id.118 (2021)
    arXiv:2102.09092
  12. "Neutron Star Extreme Matter Observatory: A kilohertz-band gravitational-wave detector in the global network"
    K. Ackley et al. (including R. Hirai)
    Publications of the Astronomical Society of Australia, Volume 37, article id. e047 (2020)
    arXiv:2007.03128
  13. "The sensitivity of presupernova neutrinos to stellar evolution models"
    Chinami Kato, Ryosuke Hirai, Hiroki Nagakura
    Monthly Notices of the Royal Astronomical Society, Volume 496, Issue 3, pp.3961-3972 (2020)
    arXiv:2005.03124
  14. "A Sub-Solar Metallicity Progenitor for Cassiopeia A, the remnant of a Type IIb Supernova"
    Toshiki Sato, Takashi Yoshida, Shigehiro Nagataki, Masaomi Ono, Keiichi Maeda, Ryosuke Hirai, John P. Hughes, Brian J. Williams, Yoshitomo Maeda
    The Astrophysical Journal, Volume 893, Issue 1, id.49 (2020)
    arXiv:2003.08922
  15. "Origins of Type Ibn SNe 2006jc/2015G in interacting binaries and implications for pre-SN eruptions"
    Ning-Chen Sun, Jusytn R. Maund, Ryosuke Hirai, Paul A. Crowther, Philipp Podsiadlowski
    Monthly Notices of the Royal Astronomical Society, Volume 491, Issue 4, p.6000-6019 (2020)
    arXiv:1909.07999
  16. "Hydrodynamical simulations and similarity relations for eruptive mass loss from massive stars"
    Stanley P. Owocki, Ryosuke Hirai, Philipp Podsiadlowski, Fabian R. N. Schneider
    Monthly Notices of the Royal Astronomical Society, Volume 485, Issue 1, p.988-1000 (2019)
    arXiv:1902.06220
  17. "The W4 method: a new multi-dimensional root-finding scheme for nonlinear systems of equations"
    Hirotada Okawa, Kotaro Fujisawa, Yu Yamamoto, Ryosuke Hirai, Nobutoshi Yasutake, Hiroki Nagakura, Shoichi Yamada
    accepted for publication in Applied Numerical Mathematics
    arXiv:1809.04495
  18. "Formation pathway of Population III coalescing binary black holes through stable mass transfer"
    Kohei Inayoshi, Ryosuke Hirai, Tomoya Kinugawa, Kenta Hotokezaka
    Monthly Notices of the Royal Astronomical Society, Volume 468, Issue 4, p.5020-5032 (2017)
    arXiv:1701.04823

Other articles

  1. "Science Cases for the Keck Wide-Field Imager"
    J. Cooke et al. (including R. Hirai)
    arXiv:2207.11698
  2. "水素欠乏超新星の親星の起源"
    平井 遼介
    The Astronomical Herald, Volume 111, Issue 9, p.580-588 (2018)
    Note: One of the figures were also used for the cover!