Hirotaka Yoshino homepage



At Vancouver (June 23, 2010).

(Japanese page)
  • Institute and position

    Research Group for Theoretical Astrophysics, Osaka Metropolitan University
    An associate professor
    (from Apr. 1st, 2022)

    A co-investigator of the C03 group of the project,
    "The Natural Laws of Extreme Universe (ExU)"


  • Membership of academic societies

    The Physical Society of Japan
    Rironkon
    International Society on General Relativity and Gravitation
  • Research fields

    General Relativity, Strong Gravity
  • Recent research

    Animation of a star under gravitational collapse (MOVIE)

    Dynamically transversely trapping surfaces (DTTSs) (GALLERY)
  • Publications
    1. Hirotaka Yoshino,
      "Distorted static photon surfaces in perturbed Reissner-Nordström spacetimes,"
      arXiv:2309.14318[gr-qc].

    2. Masaya Amo, Keisuke Izumi, Hirotaka Yoshino, Yoshimune Tomikawa, Tetsuya Shiromizu,
      "A generalization of photon sphere based on escape/capture cone,"
      arXiv:2305.11208[gr-qc].

    3. Masaya Amo, Keisuke Izumi, Yoshimune Tomikawa, Tetsuya Shiromizu, Hirotaka Yoshino,
      "Asymptotic behavior of null geodesics near future null infinity IV: Null-access theorem for generic asymptotically flat spacetime,"
      Phys. Rev. D 107 (2023) 124050, arXiv:2305.01767[gr-qc].

    4. Kensuke Sueto, Hirotaka Yoshino,
      "Evaporation of a nonsingular Reissner-Nordström black hole and information loss problem,"
      PTEP 2023 (2023) 10, 103E01, arXiv:2301.10456[gr-qc].

    5. Hidetoshi Omiya, Takuya Takahashi, Takahiro Tanaka, Hirotaka Yoshino,
      "Impact of multiple modes on the evolution of self-interacting axion condensate around rotating black holes,"
      JCAP06 (2023) 016, arXiv:2211.01949[gr-qc].

    6. Keisuke Izumi, Yoshimune Tomikawa, Tetsuya Shiromizu, Hirotaka Yoshino,
      "Attractive gravity probe surfaces in higher dimensions,"
      PTEP 2023 (2023) 4, 043E01, arXiv:2209.14124[gr-qc].

    7. Masaya Amo, Keisuke Izumi, Yoshimune Tomikawa, Hirotaka Yoshino, Tetsuya Shiromizu,
      " Asymptotic behavior of null geodesics near future null infinity III: Photons towards inward directions,"
      Phys. Rev. D 106 (2022) 084007 (Erratum), arXiv:2208.00822[gr-qc].

    8. Kangjae Lee, Tetsuya Shiromizu, Keisuke Izumi, Hirotaka Yoshino, Yoshimune Tomikawa,
      "Four types of attractive gravity probe surfaces,"
      Phys. Rev. D 106 (2022) 064028, arXiv:2206.02301[gr-qc].

    9. Masaya Amo, Tetsuya Shiromizu, Keisuke Izumi, Hirotaka Yoshino, Yoshimune Tomikawa,
      "Asymptotic behavior of null geodesics near future null infinity II: curvatures, photon surface and dynamically transversely trapping surface,"
      Phys. Rev. D 105 (2022) 064074, arXiv:2110.10917[gr-qc].

    10. Kaishu Saito, Jiro Soda, Hirotaka Yoshino,
      "Universal 1020Hz stochastic gravitational waves from photon spheres of black holes,"
      Phys. Rev. D 104 (2021) 063040, arXiv:2106.05552[gr-qc].

    11. Masaya Amo, Keisuke Izumi, Yoshimune Tomikawa, Hirotaka Yoshino, Tetsuya Shiromizu,
      "The asymptotic behavior of null geodesics near future null infinity: Significance of gravitational waves,"
      Phys. Rev. D 104 (2021) 064025 (Erratum), arXiv:2106.03150[gr-qc].

    12. Keisuke Izumi, Yoshimune Tomikawa, Tetsuya Shiromizu, Hirotaka Yoshino
      "Area bound for surfaces in generic gravitational field,"
      Prog. Theor. Exp. Phys. (2021) 083E02, arXiv:2101.03860[gr-qc].

    13. Kangjae Lee, Tetsuya Shiromizu, Hirotaka Yoshino, Keisuke Izumi, and Yoshimune Tomikawa
      "Loosely trapped surface and dynamically transversely trapping surface in Einstein-Maxwell system,"
      Prog. Theor. Exp. Phys. (2020) 103E03, arXiv:2007.03139[gr-qc].

    14. Hirotaka Yoshino, Keisuke Izumi, Tetsuya Shiromizu, and Yoshimune Tomikawa
      "Formation of dynamically transversely trapping surfaces and the stretched hoop conjecture,"
      Prog. Theor. Exp. Phys. (2020) 053E01, arXiv:1911.09893[gr-qc].

    15. Hirotaka Yoshino, Keisuke Izumi, Tetsuya Shiromizu, and Yoshimune Tomikawa
      "Transversely trapping surfaces: Dynamical version,"
      Prog. Theor. Exp. Phys. (2020) 023E02, arXiv:1909.08420[gr-qc].

    16. Hirotaka Yoshino, Kazuma Takahashi, and Ken-ichi Nakao
      "How does a collapsing star look?,"
      Phys. Rev. D100 (2019) 084062, arXiv:1908.04223[gr-qc].

    17. Hirotaka Yoshino, Keisuke Izumi, Tetsuya Shiromizu, and Yoshimune Tomikawa
      "Extension of photon surfaces and its area: Static and stationary spacetimes,"
      Prog. Theor. Exp. Phys. (2017) 063E01, arXiv:1704.04637[gr-qc].

    18. Tetsuya Shiromizu, Yoshimune Tomikawa, Keisuke Izumi, and Hirotaka Yoshino
      "Area bound for a surface in a strong gravity region,"
      Prog. Theor. Exp. Phys. (2017) 033E01, arXiv:1701.00564[gr-qc].

    19. Hirotaka Yoshino
      "On uniqueness of static photon surface: Perturbative approach,"
      Phys. Rev. D95 (2017) 044047, arXiv:1607.07133[gr-qc].

    20. Hirotaka Yoshino and Hideo Kodama
      "Bosenova and Axiverse,"
      Class. Quantum Grav. 32 (2015) 214001 (Invited contribution to the Focus Issue on "Black holes and fundamental fields"), arXiv:1505.00714[gr-qc].

    21. Takahisa Igata, Hideki Ishihara, and Hirotaka Yoshino
      "Integrability of Particle System around a Ring Source as the Newtonian Limit of a Black Ring,"
      Phys. Rev. D91 (2015) 084042, arXiv:1412.7033[hep-th].

    22. Hirotaka Yoshino and Hideo Kodama,
      "Probing the string axiverse by gravitational waves from Cygnus X-1,"
      Prog. Theor. Exp. Phys. (2015) 061E01, arXiv:1407.2030[gr-qc].

    23. Hirotaka Yoshino and Hideo Kodama,
      "Gravitational radiation from an axion cloud around a black hole: Superradiant phase,"
      Prog. Theor. Exp. Phys. (2014) 043E02, arXiv:1312.2326[gr-qc].

    24. Mitsuhiro Matsumoto, Hirotaka Yoshino and Hideo Kodama,
      "Time evolution of a thin black ring via Hawking radiation,"
      Phys. Rev. D89 (2014) 044016, arXiv:1205.5715[gr-qc].

    25. Hirotaka Yoshino and Hideo Kodama,
      "Bosenova collapse of axion cloud around a rotating black hole,"
      Prog.Theor.Phys. 128 (2012) 153-190, arXiv:1203.5070[gr-qc].

    26. Hirotaka Yoshino and Masaru Shibata,
      "Exploring Higher-Dimensional Black Holes in Numerical Relativity,"
      Prog.Theor.Phys.Suppl. 190 (2011) 282-303.

    27. Hirotaka Yoshino and Masaru Shibata,
      "Higher-Dimensional Numerical Relativity: Current Status,"
      Prog.Theor.Phys.Suppl. 189 (2011) 269-310.

    28. Hideo Kodama and Hirotaka Yoshino,
      "Axiverse and Black Hole,"
      IJMPCS 7 (2012) 84-115, arXiv:1108.1365[hep-th].

    29. Hirotaka Yoshino,
      "Black hole initial data in Gauss-Bonnet gravity: Momentarily static case,"
      Phys. Rev. D83 (2011) 104010, arXiv:1102.1810[gr-qc].

    30. Masaru Shibata and Hirotaka Yoshino,
      "Bar-mode instability of rapidly spinning black hole in higher dimensions: Numerical simulation in general relativity,"
      Phys. Rev. D81 (2010) 104035, arXiv:1004.4970[gr-qc].

    31. Masaru Shibata and Hirotaka Yoshino,
      "Nonaxisymmetric instability of rapidly rotating black hole in five dimensions,"
      Phys. Rev. D81 (2010) 021501, arXiv:0912.3606[gr-qc].

    32. Ken-ichi Nakao, Hiroyuki Abe, Hirotaka Yoshino and Masaru Shibata,
      "Maximal slicing of D-dimensional spherically-symmetric vacuum spacetime,"
      Phys. Rev. D80 (2009) 084028, arXiv:0908.0799[gr-qc].

    33. Hirotaka Yoshino and Masaru Shibata,
      "Higher-dimensional numerical relativity: Formulation and code tests,"
      Phys. Rev. D80 (2009) 084025, arXiv:0907.2760[gr-qc].

    34. Hirotaka Yoshino,
      "On the existence of a static black hole on a brane,"
      JHEP 0901 (2009) 068, arXiv:0812.0465[gr-qc].

    35. Hirotaka Yoshino and Kohei Onda,
      "Solitonlike solutions of magnetostatic equilibria: Plane-symmetric case,"
      arXiv:0805.4435[astro-ph].

    36. Hirotaka Yoshino,
      "Highly distorted apparent horizons and the hoop conjecture,"
      Phys. Rev. D77 (2008) 041501, arXiv:0712.3907[gr-qc].

    37. Hirotaka Yoshino and Tetsuya Shiromizu,
      "Collision of high-energy closed strings: Formation of a ring-like apparent horizon,"
      Phys. Rev. D76 (2007) 084021, arXiv:0707.0076[gr-qc].

    38. Hirotaka Yoshino, Andrei Zelnikov and Valeri P. Frolov,
      "Apparent horizon formation in the head-on collision of gyratons,"
      Phys. Rev. D75 (2007) 124005, arXiv:gr-qc/0703127.

    39. Hirotaka Yoshino, Tetsuya Shiromizu and Masaru Shibata,
      "Close-slow analysis for head-on collision of two black holes in higher dimensions: Bowen-York initial data,"
      Phys. Rev. D74 (2006) 124022, arXiv:gr-qc/0610110.

    40. Tetsuya Shiromizu and Hirotaka Yoshino,
      "Positive energy theorem implies constraints on static steller models,"
      Prog.Theor.Phys. 116 (2007) 1159-1164, arXiv:gr-qc/0609124.

    41. Yukinori Iwashita, Tsutomu Kobayashi, Tetsuya Shiromizu and Hirotaka Yoshino,
      "Holographic entanglement entropy of de Sitter braneworld,"
      Phys. Rev. D74 (2006) 064027, arXiv:gr-qc/0606027.

    42. Hirotaka Yoshino and Robert B. Mann,
      "Black hole formation in the head-on collision of ultrarelativistic charges,"
      Phys. Rev. D74 (2006) 044003, arXiv:gr-qc/0605131.

    43. Tetsuya Shiromizu, Sumio Yamada and Hirotaka Yoshino,
      "On existence of matter outside a static black hole,"
      J.Math.Phys. 47 (2006) 112502, arXiv:gr-qc/0605029.

    44. Tetsuya Shiromizu, Shunsuke Fujii, Claudia de Rham and Hirotaka Yoshino,
      "High-energy effective theory for orbifold branes,"
      Phys. Rev. D73 (2006) 087301, arXiv:gr-qc/0602032.

    45. Claudia de Rham, Shunsuke Fujii, Tetsuya Shiromizu and Hirotaka Yoshino,
      "High-energy effective theory for a bulk brane,"
      Phys. Rev. D72 (2005) 123522, arXiv:gr-qc/0509194.

    46. Hirotaka Yoshino, Tetsuya Shiromizu and Masaru Shibata,
      "Close-limit analysis for head-on collision of two black holes in higher dimensions: Brill-Lindquist initial data,"
      Phys. Rev. D72 (2005) 084020, arXiv:gr-qc/0508063.

    47. Yukinori Iwashita, Hirotaka Yoshino and Tetsuya Shiromizu,
      "Gravitational collapse disturbs the dS/CFT correspondence?,"
      Phys. Rev. D72 (2005) 084014, arXiv:gr-qc/0507076.

    48. Eiji Mitsuda, Hirotaka Yoshino and Akira Tomimatsu,
      "Electromagnetic radiation due to naked singularity formation in self-similar gravitational collapse,"
      Phys. Rev. D71 (2005) 084033, arXiv:gr-qc/0503104.

    49. Hirotaka Yoshino and Vyacheslav S. Rychkov,
      "Improved analysis of black hole formation in high-energy particle collisions,"
      Phys. Rev. D71 (2005) 104028, Erratum-ibid. D77 (2008) 089905, arXiv:hep-th/0503171.

    50. Hirotaka Yoshino,
      "Lightlike limit of the boosted Kerr black holes in higher-dimensional spacetimes,"
      Phys. Rev. D71 (2005) 044032, arXiv:gr-qc/0412071.

    51. Hirotaka Yoshino and Yasusada Nambu,
      "Black ring formation in particle systems,"
      Phys. Rev. D70 (2004) 084036, arXiv:gr-qc/0404109.

    52. Hirotaka Yoshino, Tohru Ohba and Akira Tomimatsu,
      "Static black holes with a negative cosmological constant: Deformed horizon and anti-de Sitter boundaries,"
      Phys. Rev. D69 (2004) 124034, arXiv:gr-qc/0402082.

    53. Hirotaka Yoshino and Yasusada Nambu,
      "Black hole formation in the grazing collision of high-energy particles,"
      Phys. Rev. D67 (2003) 024009, arXiv:gr-qc/0209003.

    54. Hirotaka Yoshino and Yasusada Nambu,
      "High-energy head-on collisions of particles and the hoop conjecture,"
      Phys. Rev. D66 (2002) 065004, arXiv:gr-qc/0204060.

    55. Hirotaka Yoshino, Yasusada Nambu and Akira Tomimatsu,
      "Hoop conjecture for colliding black holes: Non-time-symmetric initial data,"
      Phys. Rev. D65 (2002) 064034, arXiv:gr-qc/0109016.



    Hirotaka Yoshino
    Address: Department of Mathematics and Physics, Graduate School of Science, Osaka Metropolitan University
    Sumiyoshi-ku, Osaka City 558-8585, JAPAN
    Room: Science Building D119
    E-mail: hyoshino_at_omu.ac.jp
    Phone: +81-6-6605-2636
    FAX: +81-6-6605-2522

    Homepage of Research Group for Theoretical Astrophysics at Osaka Metropolitan University






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