Refereed Papers

My all papers in ADS and in arXiv.

    2016

  1. Nobutoshi Yasutake, Kotaro Fujisawa , Shoichi Yamada, 2016
    MNRAS, 463, 3705-3724 [ ADS ] [ arXiv ]
    "Rotational equilibria by Lagrangian variational principle: towards multidimensional stellar evolutions"

  2. Ryosuke Hirai, Hiroki Nagakura, Hirotada Okawa, Kotaro Fujisawa , 2016
    Phys. Rev. D, 93, 083006 [ ADS ] [ arXiv ]
    "Hyperbolic Self-Gravity Solver for Large Scale Hydrodynamical Simulations"

  3. 2015

  4. Kotaro Fujisawa , 2015
    MNRAS, 454, 3060-3072 [ ADS ] [ arXiv ]
    "A versatile numerical method for obtaining structures of rapidly rotating baroclinic stars: self-consistent and systematic solutions with shellular-type rotation"

  5. Kotaro Fujisawa , 2015
    MNRAS, 450, 4016-4024 [ ADS ] [ arXiv ]
    "Magnetized stars with differential rotation and a differential toroidal field"

  6. Kotaro Fujisawa and Yoshiharu Eriguchi, 2015
    PASJ, 67(3):53 [ ADS ] [ arXiv ]
    "Appearance of the prolate and the toroidal magnetic field dominated stars - Analytic approach"

  7. Nobutoshi Yasutake, Kotaro Fujisawa, Shoichi Yamada, 2014
    MNRAS Letters, 446, L56. [ ADS ] [ arXiv ]
    "A Novel Formulation by Lagranginan Variational Principle for Rotational Equilibria: Toward Multi-Dimensional Stellar Evolutions"

  8. 2014

  9. Kotaro Fujisawa and Shota Kisaka, 2014
    MNRAS, 445, 2777-2793 [ ADS ] [ arXiv ]
    "Magnetic field configurations of a magnetar throughout its interior to exterior -- core, crust and magnetosphere"

  10. Koji Uryu, Eric Gourgoulhon, Charalampos Markakis, Kotaro Fujisawa, Antonios Tsokaros, Yoshiharu Eriguchi, 2014
    Phys. Rev. D 90, 101501(R) 2014 [ ADS ] [ arXiv ]
    "Equilibrium solutions of relativistic rotating stars with mixed poloidal and toroidal magnetic fields"

  11. Kotaro Fujisawa and Yoshiharu Eriguchi, 2014
    MNRAS Letters, 438, L61. [ ADS ] [ arXiv ]
    "Prolate stars due to meridional flows"

  12. 2013

  13. Kotaro Fujisawa and Yoshiharu Eriguchi, 2013
    MNRAS, 432, 1245. [ ADS ] [ arXiv ]
    "Coexistence of oppositely flowing multi--currents: Key to large toroidal magnetic fields within stars"

  14. Kotaro Fujisawa, Rohta Takahashi, Shijun Yoshida and Yoshiharu Eriguchi, 2013
    MNRAS, 431, 1453. [ ADS ] [ arXiv ]
    "Counter effects of meridional flows and magnetic fields in stationary axisymmetric self-gravitating barotropes under the ideal MHD approximation: Clear examples \ toroidal configurations"

  15. 2012

  16. Kotaro Fujisawa, Shin'ichirou Yoshida and Yoshiharu Eriguchi, 2012
    MNRAS, 422, 434. [ ADS ] [ arXiv ]
    "Axisymmetric and stationary structures of magnetized barotropic stars with extremely strong magnetic fields deep inside"

Presentations [International]

  1. "Equilibrium structures of rapidly rotating massive stars with shellular rotation"
  2. Kotaro Fujisawa & Yu Yamamoto
    Phenomena, Physics, and Puzzles Of Massive Stars and their Explosive Outcomes
    (2017.3.20 Santa Barbara, USA) (Poster)

  3. "Magnetic field configurations of a magnetar throughout its interior and exterior"
  4. Kotaro Fujisawa & Shota Kisaka
    2nd Core-U International Conference: Cosmic Polarimetry from Micro to Macro Scales
    (2017.2.17 Hiroshima, Japan) (Poster)

  5. "Equilibrium structures of rapidly rotating stars with shellular rotation"
  6. Kotaro Fujisawa & Yu Yamamoto
    IAU Symposium 329 The lives and death-throes of massive stars
    (2016.11.28 Aukland, New Zeland) (Poster)

  7. "Magnetic field structures inside magnetars with strong toroidal field"
  8. Kotaro Fujisawa
    IAU Symposium 302 Magnetic Fields Throughout Stellar Evolution
    (2013.8.30 Biarritz, France) (Oral)

  9. "Axisymmetric and stationary magnetic field structures in neutron star crusts under various boundary conditions"
  10. Kotaro Fujisawa
    IAU Symposium 302 Magnetic Fields Throughout Stellar Evolution

    (2013.8.27 Biarritz, France) (Poster)

  11. "Let's solve GS equation!"
  12. Kotaro Fujisawa
    The Sixth Workshop on Black Hole Magnetospheres
    (2013.3.5 Hsinchu, Taiwan) (Oral)

  13. "Equilibrium states of magnetized disc-central compact object systems "
  14. Kotaro Fujisawa, Rohta Takahashi, Shijun Yoshida, Yoshiharu Eriguchi
    JGRG22
    (2012.11.13 Tokyo, Japan) (Poster)

  15. "Stationary and Axisymmetric Magnetized Barotropic Stars with Various Field"
  16. Kotaro Fujisawa, Shin'ichiro Yoshida, Yoshiharu Eriguchi
    Magnetic Fields in the Universe III : From Laboratory and Stars to Primordial Structures (2011.8.23 Zakopane, Poland) (Poster)

  17. Stationary and Axisymmetric Configurations of Compact Stars with Extremely Strong and Highly Localized Magnetic Fields"
  18. Kotaro Fujisawa, Shin'ichiro Yoshida, Yoshiharu Eriguchi
    IAU Symposium 274 Advances in Plasma Astrophysics
    (2010.9.7 Giardini-Naxos, Sicilia, Italy) (talk)

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