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Lightning black holes in dense molecular clouds
Luminosity evolution of pulsar outer magnetospheric accelerators as a function of neutron star spin down luminosity.
Schematic picture (side view) of a pulsar magnetosphere.
Spectral energy distribution of pulsed emission from a middle-aged pulsar B1951+32
Death Line of Gamma-ray Pulsars with Outer Gaps
Pulsed Gamma-Ray Emission from the Crab Pulsar
Spectral Hardening in the Trailing Peak of Gamma-ray Pulsar Light Curve
Spectral Hardening in the Trailing Peak of Gamma-ray Pulsar Light Curve
Pulsed Gamma-Ray Emission from the Crab Pulsar
Death Line of Gamma-ray Pulsars with Outer Gaps
Hirotani, Kouichi
Visiting Associate Research Fellow
photo of Hirotani, Kouichi
Office: ASMAB 1218
TEL: +886-2-2366-5406
FAX: +886-2-2367-7849
Email: hirotani_replace2@_asiaa.sinica.edu.tw

Research Interests

High Energy Astrophysics

Recent Journal Papers

  1. Pu H-Y; Hirotani K; Mizuno Y; Chang H-K, "Two Types of Ergospheric Jets from Accreting Black Holes: The Dichotomy of Fanaroff-Riley Galaxies" , ASTROPHYSICAL JOURNAL, 2017, submitted [SCI]
  2. Hung-Yi Pu, Masanori Nakamura, Kouichi Hirotani, Yosuke Mizuno, Kinwah Wu, and Keiichi Asada, "Steady General Relativistic Magnetohydrodynamic Inflow/Outflow Solution Along Large-Scale Magnetic Fields That Thread A Rotating Black Hole " , ASTROPHYSICAL JOURNAL, 2014, submitted [SCI]
  3. Hirotani K; Pu H-Y; Lin LC-C; Chang H-K; Inoue M; Kong AKH; Matsushita S; Tam P-HT, "Lepton acceleration in the vicinity of the event horizon: High-energy and Very-high-energy emissions from rotating black holes with various masses" , ASTROPHYSICAL JOURNAL: 833:142, 2016-12 [SCI] (Fulltext)
  4. Hirotani K*; Pu H-Y, "Energetic Gamma Radiation From Rapidly Rotating Black Holes " , ASTROPHYSICAL JOURNAL: 818(1), 50, 2016-02 [SCI] (Fulltext)
  5. Ansoldi S; Antonelli LA; Antoranz P; ...; Hirotani K; et al., "Teraelectronvolt pulsed emission from the Crab Pulsar detected by MAGIC" , ASTRONOMY & ASTROPHYSICS: 585, A133, 2016-01 [SCI] (Fulltext)
  6. Hirotani K, "Does a strong particle accelerator arise very close to the light cylinder in a pulsar magnetosphere?" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 442(1), L43-L45, 2014-07 [SCI] (Fulltext)
  7. Aleksić J; Ansoldi S; Antonelli LA; ...; Hirotani K; et al., , "Detection of bridge emission above 50 GeV from the Crab pulsar with the MAGIC telescopes" , ASTRONOMY & ASTROPHYSICS: 565, L12, 2014-05 [SCI] (Fulltext)
  8. Viganò D; Torres DF; Hirotani K; Pessah ME, "Compact formulae, dynamics and radiation of charged particles under synchro-curvature losses" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 447(2), 1168-1176, 2014-02 [SCI]
  9. Hirotani K, "Outer-gap versus Slot-gap Models for Pulsar High Energy Emissions: The Case of the Crab Pulsar" , ASTROPHYSICAL JOURNAL: 688(1), L25-L28, 2008-11 [SCI] (Fulltext)
  10. Albert J; Aliu E; Anderhub H; ...Hirotani K; ...; et al., "Constraints on the steady and pulsed very high energy gamma-ray emission from observations of PSR B1951+32/CTB 80 with the magic telescope" , ASTROPHYSICAL JOURNAL: 669(2), 1143-1149, 2007-11 [SCI] (Fulltext)
  11. Hirotani K, "High-energy Emission from Pulsar Outer Magnetospheres" , ASTROPHYSICAL JOURNAL: 662(2), 1173-1176, 2007-06 [SCI] (Fulltext)
  12. Hirotani K, "Particle Accelerator in Pulsar Magnetospheres: Super Goldreich-Julian Current with Ion Emission from the Neutron Star Surface" , ASTROPHYSICAL JOURNAL: 652(2), 1475-1493, 2006-12 [SCI] (Fulltext)
  13. Hirotani K, "High-energy Emission from Pulsar Magnetospheres" , MODERN PHYSICS LETTERS A: 21(17), 1319-1337, 2006-06 [SCI] (Fulltext)
  14. Takata J; Shibata S; Hirotani K; Chang H-K, "A two-dimensional electrodynamical outer gap model for gamma-ray pulsars: gamma-ray spectrum" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 366(4), 1310-1328, 2006-03 [SCI] (Fulltext)
  15. Hirotani K, "Particle Acceleration in Pulsar Outer Magnetospheres: Electrodynamics and High-Energy Emissions" , NEW RESEARCH ON ASTROPHYSICS, NEUTRON STARS AND GALAXY CLUSTERS: 1, 1-37, 2006 (Fulltext)
TEL: 886-2-3365-2200 FAX: 886-2-2367-7849
General: asiaa_replace2@_asiaa.sinica.edu.tw Media Request: epo_replace2@_asiaa.sinica.edu.tw
11F of AS/NTU Astronomy-Mathematics Building, No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C.