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相关论文: Electrodynamic Structure of an Outer-Gap Accelerat…

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We investigate a stationary pair production cascade in the outer magnetosphere of a spinning neutron star. The charge depletion due to global flows of charged particles, causes a large electric field along the magnetic field lines.…

天体物理学 · 物理学 2009-11-07 Kouichi Hirotani , Shinpei Shibata

We investigate a stationary particle acceleration zone in the outer magnetosphere of a spinning neutron star. The charge depletion due to a global current causes a large electric field along the magnetic field lines. Migratory electrons…

天体物理学 · 物理学 2009-10-31 Kouichi Hirotani , Shinpei Shibata

We investigate a stationary pair production cascade in the outer magnetosphere of a spinning neutron star. The charge depletion due to a global current, causes a large electric field along the magnetic field lines. Migratory electrons…

天体物理学 · 物理学 2007-05-23 Kouichi Hirotani , Shinpei Shibata

We investigate a stationary pair production cascade in the outer magnetosphere of a spinning neutron star. The charge depletion due to global flows of charged particles, causes a large electric field along the magnetic field lines.…

天体物理学 · 物理学 2008-11-26 Kouichi Hirotani , Alice K. Harding , Shinpei Shibata

We investigate a stationary pair production cascade in the outer magnetosphere of an isolated, spinning neutron star. The charge depletion due to global flows of charged particles, causes a large electric field along the magnetic field…

天体物理学 · 物理学 2008-11-26 Kouichi Hirotani

We study the structure of an outer-magnetospheric gap around a rotating neutron star. Migratory electrons and positrons are accelerated by the electric field exerted in the gap and radiate copious gamma-rays via curvature process. Some of…

天体物理学 · 物理学 2007-05-23 K. Hirotani

We investigate the $\gamma$-ray emission from a outer-gap accelerator, which is located in the outer-magnetosphere of a pulsar. The charge depletion from the Goldreich-Julian density causes a large electric field along the magnetic field…

天体物理学 · 物理学 2009-11-10 J. Takata , S. Shibata , K. Hirtotani

We investigate the electrodynamics of an outer gap in the meridional plane of the aligned-rotator. The charge depletion from the Goldreich-Julian charge density causes a large electric field along the magnetic field line. The electrons or…

天体物理学 · 物理学 2016-08-30 J. Takata , S. Shibata , K. Hirotani

We study the gamma-ray emissions from an outer-magnetospheric potential gap around a rotating neutron star. Migratory electrons and positrons are accelerated by the electric field in the gap to radiate copious gamma-rays via curvature…

天体物理学 · 物理学 2009-10-31 K. Hirotani

We investigate the self-consistent electrodynamic structure of a particle accelerator in the Crab pulsar magnetosphere on the two-dimensional poloidal plane, solving the Poisson equation for the electrostatic potential together with the…

天体物理学 · 物理学 2008-11-26 Kouichi Hirotani

A two-dimensional electrodynamical model is used to study particle acceleration in the outer magnetosphere of a pulsar. The charge depletion from the Goldreich-Julian charge density causes a large electric field along the magnetic field…

天体物理学 · 物理学 2009-11-13 J. Takata , S. Shibata , K. Hirotani , H. -K. Chang

We investigate the electron-positron pair cascade taking place in the magnetosphere of a rapidly rotating black hole. Because of the spacetime frame dragging, the Goldreich-Julian charge density changes sign in the vicinity of the event…

We develop a model for gamma-ray emission from the outer magnetosphere of pulsars (the outer-gap model). The charge depletion causes a large electric field which accelerates electrons and positrons. We solve the electric field with…

天体物理学 · 物理学 2007-05-23 Junpei Takata , Sinpei Shibata , Kouichi Hirotani

A self-consistent electrodynamics of a particle accelerator in a rotating neutron-star magnetosphere is investigated on the two-dimensional poloidal plane. Solving the Poisson equation for the electrostatic potential together with the…

天体物理学 · 物理学 2007-05-23 K. Hirotani

The ability of the neutron star surface to supply all or only part of the charges filling the pulsar magnetosphere is crucial for the physics prevailing within it, with direct consequences for the possible formation of pair creation…

天体物理学 · 物理学 2009-10-31 A. Jessner , H. Lesch , T. Kunzl

We discuss outer gap closure mechanism in the trans-field direction with the magnetic pair-creation process near the stellar surface. The gap closure by the magnetic pair-creation is possible if some fraction of the pairs are produced with…

高能天体物理现象 · 物理学 2017-02-22 J. Takata , Y. Wang , K. S. Cheng

Recent $\gamma$-ray observations suggest that the particle acceleration occurs at the outer region of the pulsar magnetosphere. The magnetic field lines in the outer acceleration region (OAR) are connected to the neutron star surface (NSS).…

高能天体物理现象 · 物理学 2016-09-21 Shota Kisaka , Katsuaki Asano , Toshio Terasawa

We analytically investigate the condition for a particle accelerator to be active in the outer magnetosphere of a rotation-powered pulsar. Within the accelerator (or the gap), magnetic-field-aligned electric field accelerates electrons and…

高能天体物理现象 · 物理学 2015-05-28 Ren-Bo Wang , Kouichi Hirotani

We investigate the electrostatic acceleration of electrons and positrons in the vicinity of the event horizon, applying the pulsar outer-gap model to black hole magnetospheres. During a low accretion phase, the radiatively inefficient…

It is proposed that the variable TeV emission observed in M87 may be produced in a starved magnetospheric region, above which the outflow associated with the VLBA jet is established. It is shown that annihilation of MeV photons emitted by…

高能天体物理现象 · 物理学 2011-03-18 Amir Levinson , Frank Rieger
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