منابع مشابه
High-Altitude Emission from Pulsar Slot Gaps: The Crab Pulsar
We present results of a 3D model of optical to γ-ray emission from the slot gap accelerator of a rotation-powered pulsar. Primary electrons accelerating to high-altitudes in the unscreened electric field of the slot gap reach radiationreaction limited Lorentz factors of ∼ 2× 10, while electron-positron pairs from lower-altitude cascades flow along field lines interior to the slot gap. The curva...
متن کاملThe Shape of Pulsar Polar Caps
Rotation distorts the vacuum magnetic field of a pulsar from that of a simple dipole. The effect is particularly strong close to the light cylinder, but also affects the field close to the stellar surface. We find the shape and locus of the field lines which just close at the light cylinder. Their footpoints define the pulsar polar cap. We find this cap is asymmetric and distorted. We also find...
متن کاملA Particle Simulation for the Global Pulsar Magnetosphere: the Pulsar Wind linked to the Outer Gaps
Soon after the discovery of radio pulsars in 1967, the pulsars are identified as strongly magnetic (typically 10G) rapidly rotating (∼ 10−0.1 Hz) neutron stars. However, the mechanism of particle acceleration in the pulsar magnetosphere has been a longstanding problem. The central problem is why the rotation power manifests itself in both gamma-ray beams and a highly relativistic wind of electr...
متن کاملGeneral Relativistic Electromagnetism and Particle Acceleration in Pulsar Polar Cap
We reconstruct a 3+1 formalism of general relativistic electromagnetism, and derive the equations of motion of charged particles in the pulsar magnetosphere, taking account of the inclination between the rotation axis and the magnetic axis. Apart from the previous works where space charge is evaluated by assuming the flow velocity being the light speed, we analyze particle motion in the polar c...
متن کاملNuclear physics of reverse electron flow at pulsar polar caps
Protons produced in electromagnetic showers formed by the reverse-electron flux are usually the largest component of the time-averaged polar-cap open magnetic-flux line current in neutron stars with positive corotational charge density. Although the electric-field boundary conditions in the corotating frame are time-independent, instabilities on both medium and short time-scales cause the curre...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2008
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2008.13321.x