Ryosuke Hirai's Homepage

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  1. "Neutron star kicks plus rockets as a mechanism for forming wide low-eccentricity neutron star binaries"
    Ryosuke Hirai, Philipp Podsiadlowski, Alexander Heger, Hiroki Nagakura
    The Astrophysical Journal Letters, Volume 972, Issue 1, id.L18, 8 pp. (2024)
    arXiv:2407.20967
  2. "Constraining mass-transfer and common-envelope physics with post-supernova companion monitoring"
    Ryosuke Hirai
    Monthly Notices of the Royal Astronomical Society, Volume 523, Issue 4, pp.6011-6019 (2023)
    arXiv:2304.13864
  3. "A two-stage formalism for common-envelope phases of massive stars"
    Ryosuke Hirai, Ilya Mandel
    The Astrophysical Journal Letters, Volume 937, Issue 2, id.L42, 7 pp. (2022)
    arXiv:2209.05328
  4. "Neutron stars colliding with binary companions: formation of hypervelocity stars, pulsar planets, bumpy superluminous supernovae and Thorne-Żytkow objects"
    Ryosuke Hirai, Philipp Podsiadlowski
    Monthly Notices of the Royal Astronomical Society, Volume 517, Issue 3, pp.4544-4556 (2022)
    arXiv:2208.00915
  5. "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
  6. "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
  7. "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
  8. "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
  9. "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
  10. "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
  11. "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"!
  12. "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
  13. "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
  14. "Rapid stellar and binary population synthesis with COMPAS: methods paper II"
    Ilya Mandel, Jeff Riley, Adam Boesky, Adam Brcek, Ryosuke Hirai, Veome Kapil, Mike Y. M. Lau, JD Merritt, Nicolás Rodríguez-Segovia, Isobel Romero-Shaw, Yuzhe Song, Simon Stevenson, Avi Vajpeyi, L. A. C. van Son, Alejandro Vigna-Gómez, Reinhold Willcox
    submitted to AAS Journals
    arXiv:2506.02316
  15. "Population Synthesis Study on the Binary Origin of Type Ibn Supernovae"
    Takatoshi Ko, Tomoya Kinugawa, Daichi Tsuna, Ryosuke Hirai, Yuki Takei
    submitted to MNRAS
    arXiv:2506.00931
  16. "Common envelopes in massive stars III: The obstructive role of radiation transport in envelope ejection"
    Mike Y. M. Lau, Ryosuke Hirai, Daniel J. Price, Ilya Mandel, Matthew R. Bate
    accepted for publication in A&A
    arXiv:2503.20506
  17. "Precursor Activity Preceding Interacting Supernovae I: Bridging the Gap with SN 2022mop"
    S. J. Brennan, S. Bartmentloo, S. Schulze, K. W. Smith, R. Hirai, J. J. Eldridge, M. Fraser, H. F. Stevance, S. J. Smartt, S. Anand, A. Aryan, T.-W. Chen, K. K. Das, A. J. Drake, C. Fransson, A. Gangopadhyay, A. Gkini, W. V. Jacobson-Galán, A. Jerkstrand, J. Johansson, M. Nicholl, G. Pignata, N. Sarin, A. Singh, J. Sollerman, S. Srivastav, B.F.A. van Baal, K. C. Chambers, M. W. Coughlin, H. Gao, M. J. Graham, M. E. Huber, C.-C. Lin, T. B. Lowe, E. A. Magnier, F. J. Masci, J. Purdum, A. Rest, B. Rusholme, R. Smith, I. A. Smith, J. W. Tweddle, R.J. Wainscoat, T. de Boer
    submitted to A&A
    arXiv:2503.08768
  18. "Evidence of non-Solar elemental composition in the clocked bursts from SRGA J144459.2−604207"
    Akira Dohi, Nobuya Nishimura, Ryosuke Hirai, Tomoshi Takeda, Wataru Iwatari, Toru Tamagawa, Amira Aoyama, Teruaki Enoto, Satoko Iwata, Yo Kato, Takao Kitaguchi, Tatehiro Mihara, Naoyuki Ota, Takuya Takahashi, Sota Watanabe, Kaede Yamasaki
    accepted for publication in PASJL
    arXiv:2411.10993
  19. "NinjaSat monitoring of Type-I X-ray bursts from the clocked burster SRGA J144459.2−604207"
    Tomoshi Takeda, Toru Tamagawa, Teruaki Enoto, Takao Kitaguchi, Yo Kato, Tatehiro Mihara, Wataru Iwakiri, Masaki Numazawa, Naoyuki Ota, Sota Watanabe, Arata Jujo, Amira Aoyama, Satoko Iwata, Takuya Takahashi, Kaede Yamasaki, Chin-Ping Hu, Hiromitsu Takahashi, Akira Dohi, Nobuya Nishimura, Ryosuke Hirai, Yuto Yoshida, Hiroki Sato, Syoki Hayashi, Yuanhui Zhou, Keisuke Uchiyama, Hirokazu Odaka, Tsubasa Tamba, Kentaro Taniguchi
    accepted for publication in PASJL
    arXiv:2411.10992
  20. "Constraining the CSM structure and progenitor mass-loss history of interacting supernovae through 3D hydrodynamic modeling: The case of SN 2014C"
    Salvatore Orlando, Emanuele Greco, Ryosuke Hirai, Tomoki Matsuoka, Marco Miceli, Shigehiro Nagataki, Masaomi Ono, Ke-Jung Chen, Dan Milisavljevic, Daniel Patnaude, Fabrizio Bocchino, Nancy Elias-Rosa
    The Astrophysical Journal, Volume 977, Issue 1, id.118, 35 pp. (2024)
    arXiv:2410.17699
  21. "Evolution of the Convective Core Mass during the Main Sequence"
    Minori Shikauchi, Ryosuke Hirai, Ilya Mandel
    The Astrophysical Journal, Volume 984, Issue 2, id.149, 10 pp. (2025)
    arXiv:2409.00460
  22. "Bumpy Superluminous Supernovae Powered by Magnetar-star Binary Engine"
    Jin-Ping Zhu, Liang-Duan Liu, Yun-Wei Yu, Ilya Mandel, Ryosuke Hirai, Bing Zhang, Aming Chen
    The Astrophysical Journal Letters, Volume 970, Issue 2, id.L42, 10 pp. (2024)
    arXiv:2405.01224
  23. "Fits for the convective envelope mass in massive stars"
    Lewis Picker, Ryosuke Hirai, Ilya Mandel
    The Astrophysical Journal, Volume 969, Issue 1, id.1, 8 pp. (2024)
    arXiv:2402.13180
  24. "Expansion of accreting main-sequence stars during rapid mass transfer"
    Mike Y. M. Lau, Ryosuke Hirai, Ilya Mandel, Christopher A. Tout
    The Astrophysical Journal Letters, Volume 966, Issue 1, id.L7, 10 pp. (2024)
    arXiv:2401.09570
  25. "Dust formation in common envelope binary interactions -- II: 3D simulations with self-consistent dust formation"
    Luis C. Bermúdez-Bustamante, Orsola De Marco, Lionel Siess, Daniel J. Price, Miguel González-Bolívar, Mike Y. M. Lau, Chunliang Mu, Ryosuke Hirai, Taïssa Danilovich, Mansi M. Kasliwal
    Monthly Notices of the Royal Astronomical Society, Volume 533, Issue 1, pp.464-481 (2024)
    arXiv:2401.03644
  26. "Evidence for Evolved Stellar Binary Mergers in Observed B-type Blue Supergiants"
    Athira Menon, Andrea Ercolino, Miguel A. Urbaneja, Daniel J. Lennon, Artemio Herrero, Ryosuke Hirai, Norbert Langer, Abel Schootemeijer, Emmanouil Chatzopoulos, Juhan Frank, Sagiv Shiber
    The Astrophysical Journal Letters, Volume 963, Issue 2, id.L42, 12 pp. (2024)
    arXiv:2311.05581
  27. "SN 2022jli: a type Ic supernova with periodic modulation of its light curve and an unusually long rise"
    T. Moore et al. (including R. Hirai)
    The Astrophysical Journal Letters, Volume 956, Issue 1, id.L31, 13 pp. (2023)
    arXiv:2309.12750
  28. "The Impact of Angular Momentum Loss on the Outcomes of Binary Mass Transfer"
    Reinhold Willcox, Morgan MacLeod, Ilya Mandel, Ryosuke Hirai
    The Astrophysical Journal, Volume 958, Issue 2, id.138, 12 pp. (2023)
    arXiv:2308.06666
  29. "Time-independent Simulations of Steady-State Accretion with Nuclear Burning"
    Kaho Tse, Alexander Heger, Ryosuke Hirai, Duncan Galloway
    arXiv:2305.10627
  30. "Rapid population synthesis of black-hole high-mass X-ray binaries: implications for binary stellar evolution"
    Isobel M. Romero-Shaw, Ryosuke Hirai, Arash Bahramian, Reinhold Willcox, Ilya Mandel
    Monthly Notices of the Royal Astronomical Society, Volume 524, Issue 1, pp.245-259 (2023)
    arXiv:2303.05375
  31. "The Galactic underworld: The spatial distribution of compact remnants"
    David Sweeney, Peter Tuthill, Sanjib Sharma, Ryosuke Hirai
    Monthly Notices of the Royal Astronomical Society, Volume 516, Issue 4, pp.4971-4979 (2022)
    arXiv:2210.04241
  32. "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
    Monthly Notices of the Royal Astronomical Society, Volume 516, Issue 4, pp.4669-4678 (2022)
    arXiv:2206.06411
  33. "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
    Monthly Notices of the Royal Astronomical Society, Volume 517, Issue 3, pp.3181-3199 (2022)
    arXiv:2205.09749
  34. "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
  35. "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
  36. "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
  37. "COMPAS: A rapid binary population synthesis suite"
    Team COMPAS (including R. Hirai)
    Journal of Open Source Software, vol. 7, issue 69, id. 3838 (2022)
  38. "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
  39. "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
  40. "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
  41. "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
  42. "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
  43. "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
  44. "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
  45. "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
  46. "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
  47. "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
    Applied Numerical Mathematics, Volume 183, p.157-172 (2023)
    arXiv:1809.04495
  48. "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
  49. "Common envelopes at StanFest"
    Ilya Mandel, Ryosuke Hirai and Lewis Picker
    Fundamentals of Stellar Outflows (StanFest2024) Conference Proceedings (2024)
  50. "Dusty Common Envelope Evolution"
    Lionel Siess, Luis C. Bermúdez-Bustamante, Orsola De Marco, Daniel J. Price, Miguel González-Bolívar, Chunliang Mu, Mike Y. M. Lau, Ryosuke Hirai and Taïssa Danilovich
    XIV Torino Workshop on AGB stars Conference Proceedings, Galaxies, Volume 12, Issue 6, id.82 (2024)
  51. "Post-supernova binary interactions"
    Ryosuke Hirai
    Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 93 - Année 2024, No 3 - 41st Liège International Astrophysical Colloquium, 206-215 (2024)
  52. "Roman CCS White Paper: Characterizing the Galactic population of isolated black holes"
    C. Y. Lam et al. (including R. Hirai)
    arXiv:2306.12514
  53. "Science Cases for the Keck Wide-Field Imager"
    J. Cooke et al. (including R. Hirai)
    arXiv:2207.11698
  54. "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!