SHOTA KISAKA

Last Updated :2025/01/07

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Assistant Professor
Web Site
https://home.hiroshima-u.ac.jp/kisaka/
E-mail
kisakahiroshima-u.ac.jp
Other Contact Details
Hiroshima Univ., 1-3-1, Kagamiyama, Higashi Hiroshima City, Hiroshima, Japan 739-8526, Japan
TEL : (+81)82-424-7369 FAX : (+81)
Self-introduction
I have been studying the energy extraction mechanism from compact objects such as neutron star and black holes, and the energy conversion mechanism for plasma kinetic energy and radiation near the stars, especially the particle acceleration and electromagnetic radiation by a strong electric field that fluctuates violently like discharge phenomenon and the production of a large amount of plasma by an electromagnetic cascade under extreme environments such as strong gravity, high density, and strong electromagnetic fields.

Basic Information

Major Professional Backgrounds

  • 2012/04, Institute for Cosmic Ray Research, The University of Tokyo, Postdoctoral Researcher
  • 2014/04, KEK, Theory Center, Institute of Particle and Nuclear Studies, Project Researcher
  • 2016/02, Kyoto University, Graduate school of Science, Project Researcher
  • 2016/04, Aoyama Gakuin University, College of Science and Engineering, JSPS Research Fellow (PosDoc)
  • 2019/03, Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Researcher

Educational Backgrounds

  • Hiroshima University, Graduate School of Science, Department of Physics, Japan, 2009/04, 2012/03
  • Hiroshima University, Graduate School of Science, Department of Physics, Japan, 2007/04, 2009/03
  • Hiroshima University, Faculty of Science, Department of Physics, Japan, 2003/04, 2007/03

Academic Degrees

  • Master of science, Hiroshima University
  • Ph. D. (Science), Hiroshima University

Educational Activity

  • [Bachelor Degree Program] School of Science : Physics : Physics
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Physics Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Physics Program

In Charge of Primary Major Programs

  • Physics

Research Fields

  • Mathematical and physical sciences;Physics;Particle / Nuclear / Cosmic ray / Astro physics

Research Keywords

  • High-energy astrophysics
  • Black holes
  • Neutron stars

Affiliated Academic Societies

Educational Activity

Course in Charge

  1. 2024, Undergraduate Education, Second Semester, Exercises in Mechanics
  2. 2024, Graduate Education (Master's Program) , Academic Year, Special Research in Physics

Research Activities

Academic Papers

  1. The Centrifugal Acceleration and the Y-point of the Pulsar Magnetosphere, The Astrophysical Journal, 972(1), 98, 202408
    Link to Paper Search Results by DOI
  2. On the X-ray efficiency of the white dwarf pulsar candidate ZTF J190132.9+145808.7, Publications of the Astronomical Society of Japan, 76(4), 702-707, 202408
    Link to Paper Search Results by DOI
  3. SKA sensitivity to sub-GeV dark matter decay: Synchrotron radio emissions in white dwarf magnetospheres, Physical Review D, 109(8), 083533, 202404
    Link to Paper Search Results by DOI
  4. Efficiency of Nonthermal Pulsed Emission from Eight MeV Pulsars, The Astrophysical Journal, 965(2), 126, 202404
    Link to Paper Search Results by DOI
  5. One-dimensional General Relativistic Particle-in-cell Simulations of Stellar-mass Black Hole Magnetospheres: A Semianalytic Model of Gamma-Rays from Gaps, The Astrophysical Journal, 964(1), 78, 202403
    Link to Paper Search Results by DOI
  6. Evolutionary deformation toward the elastic limit by a magnetic field confined in the neutron--star crust, The Astrophysical Journal, 946(2), 75, 202304
    Link to Paper Search Results by DOI
  7. Strong toroidal magnetic fields sustained by the elastic crust in a neutron star, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 519(3), 3776-3784, 20230109
    Link to Paper Search Results by DOI
  8. Detection of a bright burst from the repeating fast radio burst 20201124A at 2 GHz, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 75(1), 199-207, 20230206
    Link to Paper Search Results by DOI
  9. Magnetically confined mountains on accreting neutron stars with multipole magnetic fields, Monthly Notices of the Royal Astronomical Society, 516, 5196-5208, 2022
    Link to Paper Search Results by DOI
  10. High-power laser experiment forming a supercritical collisionless shock in a magnetized uniform plasma at rest, Physical Review E, 105(2), 025203, 2022
    Link to Paper Search Results by DOI
  11. Magnetic field sustained by the elastic force in neutron star crusts, Monthly Notices of the Royal Astronomical Society, 511(1), 480-487, 2022
    Link to Paper Search Results by DOI
  12. The Response of Black Hole Spark Gaps to External Changes: A Production Mechanism of Rapid TeV Flares?, The Astrophysical Journal, 924(1), 28, 2022
    Link to Paper Search Results by DOI
  13. Multi-frequency radio observations of the radio-loud magnetar XTE J1810−197, Publications of the Astronomical Society of Japan, 73(6), 1563-1574, 2021
    Link to Paper Search Results by DOI
  14. A Month of Monitoring the New Magnetar Swift J1555.2-5402 during an X-Ray Outburst, The Astrophysical Journal Letters, 920(1), L4, 2021
    Link to Paper Search Results by DOI
  15. On the angular momentum extraction from the rotation powered pulsars, Monthly Notices of the Royal Astronomical Society, 507(1), 1055-1063, 2021
    Link to Paper Search Results by DOI
  16. Magneto-elastic equilibrium of a neutron star crust, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 506(3), 3936-3945, 2021
    Link to Paper Search Results by DOI
  17. Enhanced x-ray emission coinciding with giant radio pulses from the Crab Pulsar, Science, 372(6538), 187-190, 2021
    Link to Paper Search Results by DOI
  18. Evolution of magnetic deformation in neutron star crust, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 502(2), 2097-2104, 2021
    Link to Paper Search Results by DOI
  19. Comprehensive Analysis of Magnetospheric Gaps around Kerr Black Holes Using 1D GRPIC Simulations, ASTROPHYSICAL JOURNAL, 902(1), 2020
    Link to Paper Search Results by DOI
  20. Suzaku and Fermi view of the supernova remnant 3C 396, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 492(1), 1484-1491, 2020
    Link to Paper Search Results by DOI
  21. Upscattered Cocoon Emission in Short Gamma-Ray Bursts as High-energy Gamma-Ray Counterparts to Gravitational Waves, ASTROPHYSICAL JOURNAL LETTERS, 887(1), 2019
    Link to Paper Search Results by DOI
  22. Observational diversity of magnetized neutron stars, REPORTS ON PROGRESS IN PHYSICS, 82(10), 2019
    Link to Paper Search Results by DOI
  23. Exponentially Decaying Extended Emissions Following Short Gamma-Ray Bursts with a Possible Luminosity-E-folding Time Correlation, ASTROPHYSICAL JOURNAL, 877(2), 2019
    Link to Paper Search Results by DOI
  24. Relativistic fireball reprise: radio suppression at the onset of short magnetar bursts, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 483(3), 4175-4186, 2019
    Link to Paper Search Results by DOI
  25. Is the Macronova in GW170817 Powered by the Central Engine?, ASTROPHYSICAL JOURNAL, 861(1), 2018
    Link to Paper Search Results by DOI
  26. Scattered Short Gamma-Ray Bursts as Electromagnetic Counterparts to Gravitational Waves and Implications of GW170817 and GRB 170817A, ASTROPHYSICAL JOURNAL, 867(1), 2018
    Link to Paper Search Results by DOI
  27. Hitomi X-ray studies of giant radio pulses from the Crab pulsar, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 70(2), 2018
    Link to Paper Search Results by DOI
  28. Bimodal Long-lasting Components in Short Gamma-Ray Bursts: Promising Electromagnetic Counterparts to Neutron Star Binary Mergers, ASTROPHYSICAL JOURNAL, 846(2), 2017
    Link to Paper Search Results by DOI
  29. Magnetar Broadband X-Ray Spectra Correlated with Magnetic Fields: Suzaku Archive of SGRs and AXPs Combined with NuSTAR, Swift, and RXTE, Astrophysical Journal, Supplement Series, 231(1), 2017
    Link to Paper Search Results by DOI
  30. Pulsar Wind Nebulae inside Supernova Remnants as Cosmic-Ray PeVatrons, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 478(1), 926-931, 2018
    Link to Paper Search Results by DOI
  31. Efficiency of Synchrotron Radiation from Rotation-powered Pulsars, ASTROPHYSICAL JOURNAL, 837(1), 2017
    Link to Paper Search Results by DOI
  32. Constraints on pulsed emission model for repeating FRB 121102, PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 69(6), 2017
    Link to Paper Search Results by DOI
  33. Wide-Band Spectra of Giant Radio Pulses from the Crab Pulsar, ASTROPHYSICAL JOURNAL, 832(2), 2016
    Link to Paper Search Results by DOI
  34. Electric Field Screening with Backflow at Pulsar Polar Cap, ASTROPHYSICAL JOURNAL, 829(1), 2016
    Link to Paper Search Results by DOI
  35. X-ray-powered macronovae, ASTROPHYSICAL JOURNAL, 818(2), 2016
    Link to Paper Search Results by DOI
  36. Isotropic Detectable X-ray Counterparts to Gravitational Waves from Neutron Star Binary Mergers, ASTROPHYSICAL JOURNAL LETTERS, 809(1), 2015
    Link to Paper Search Results by DOI
  37. Long-Lasting Black-Hole Jets in Short Gamma-Ray Bursts, ASTROPHYSICAL JOURNAL LETTERS, 804(1), 2015
    Link to Paper Search Results by DOI
  38. Energy sources and light curves of macronovae, ASTROPHYSICAL JOURNAL, 802(2), 2015
    Link to Paper Search Results by DOI
  39. Magnetic field configurations of a magnetar throughout its interior and exterior - core, crust and magnetosphere, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 445(3), 2777-2793, 2014
    Link to Paper Search Results by DOI
  40. Synchrotron X-ray emission from old pulsars, MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 443(3), 2063-2076, 2014
    Link to Paper Search Results by DOI
  41. The Evolution of High Temperature Plasma in Magnetar Magnetospheres and its Implications for Giant Flares, ASTROPHYSICAL JOURNAL, 787(1), 2014
    Link to Paper Search Results by DOI
  42. Magnetic field decay with Hall drift in neutron star crusts, Monthly Notices of the Royal Astronomical Society, 421(3), 2722-2730, 2012
    Link to Paper Search Results by DOI
  43. TeV cosmic-ray electrons from millisecond pulsars, Monthly Notices of the Royal Astronomical Society, 421(4), 3543-3549, 2012
    Link to Paper Search Results by DOI
  44. Multi-wavelength emission region of gamma-ray emitting pulsars, Astrophysical Journal, 739(1), 2011
    Link to Paper Search Results by DOI
  45. Mass-dependent evolution of the relation between the supermassive black hole mass and host spheroid mass since z ~ 1, Monthly Notices of the Royal Astronomical Society, 405(2), 1285-1292, 2010
    Link to Paper Search Results by DOI
  46. The correlation of black hole mass with metallicity index of host spheroid, Monthly Notices of the Royal Astronomical Society, 390(2), 814-818, 2008
    Link to Paper Search Results by DOI

Invited Lecture, Oral Presentation, Poster Presentation

  1. Global Particle Simulation of Pulsar Magnetospheres, Shota Kisaka, Polish - Japanese Workshop on Extreme Field and Plasma around Pulsar Magnetosphere, 2024/03/11, Without Invitation, English
  2. Global Particle Simulation of Pulsar Magnetospheres, Shota Kisaka, Cosmic Plasma Revisited: New Landscape of High-Energy Astrophysical Bursts, 2023/10/26, With Invitation, English
  3. Pulsar theory vs observation, Shota Kisaka, Pulsar mini workshop in Yamagata, 2023/10/02, Without Invitation, English
  4. The response of black hole spark gaps to external changes: A production mechanism of rapid TeV flares?, Shota Kisaka, Black Hole Astrophysics with VLBI 2022, 2022/02/08, Without Invitation, English
  5. The electromagnetic cascade in neutron star and black hole magnetospheres, Shota Kisaka, High Energy Density Science 2021, 2021/04/19, With Invitation, English
  6. Energy conversion efficiency in magnetospheric gaps around Kerr black holes, Shota Kisaka, Black Hole Astrophysics with VLBI: Multi-Wavelength and Multi-Messenger Era, 2021/01/18, Without Invitation, English

External Funds

Acceptance Results of Competitive Funds

  1. The PPARC joint research program of Tohoku University, The origin of Fast Radio Burst approaching by multi-wavelength observations of the Crab pulsar and FRB 20201124A, 2024, 2024
  2. The PPARC joint research program of Tohoku University, The origin of Fast Radio Burst approaching by multi-wavelength observations of the Crab pulsar and FRB 20201124A, 2023, 2023
  3. The joint research project of the Institute of Laser Engineering, Osaka University, Theoretical study for experimental verification of coherent radiation and stimulated emission conditions for fast radio bursts, 2022, 2022
  4. The PPARC joint research program of Tohoku University, The origin of Fast Radio Burst approaching by multi-wavelength observations of the Crab pulsar and FRB 20201124A, 2022, 2022
  5. Grant-in-Aid for Scientific Research (C), Global numerical simulation of the neutron star magnetosphere, 2022, 2025
  6. Grant-in-Aid for Scientific Research (B), Repeating FRB approaching from the physics of neutron star magnetospheres, 2022, 2025
  7. The joint research project of the Institute of Laser Engineering, Osaka University, Theoretical study for experimental verification of coherent radiation and stimulated emission conditions for fast radio bursts, 2021, 2021
  8. Grant-in-Aid for Scientific Research (B), Search for axion dark matter using highly magnetized compact objects, 2021, 2024
  9. Grant-in-Aid for Young Scientists, Electromagnetic cascade in a black hole magnetosphere, 2019, 2021
  10. Grant-in-Aid for Scientific Research (B), Diversity of neutron stars and their magnetospheres, 2018, 2021
  11. Grant-in-Aid for JSPS Fellows, Dissipation mechanisms in compact star magnetospheres and origin of fast radio bursts, 2016, 2018
  12. Grant-in-Aid for JSPS Fellows, Gamma-ray studies for emission of pulsars and the spatial structure near supermassive black holes, 2010, 2011

Social Activities

History as Committee Members

  1. Part-time teacher, 2020, Tohoku Gakuin University
  2. Part-time teacher, 2019, Yamaguchi University
  3. Part-time teacher, 2019, Tohoku Gakuin University

Organizing Academic Conferences, etc.

  1. Polish - Japanese Workshop on Extreme Field and Plasma around Pulsar Magnetosphere, 2024/03, 2024/03
    Permalink
  2. Pulsar mini workshop in Yamagata, 2023/10, 2023/10
    Permalink
  3. Yamada Conference LXXI: Gamma-ray Bursts in the Gravitational Wave Era 2019, 2019/10, 2019/11
    Permalink
  4. HEAP2015 Central Engines in the High Energy Universe, 2015/10, 2015/10
    Permalink