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Emission of particles and photons in the pulsar polar cap

Published online by Cambridge University Press:  12 April 2016

A. I. Tsygan
A. I. Tsygan*
Affiliation:
Ioffe Physical Technical Institute, Politekhnicheskaya, 26, 194021 St.Petersburg, Russia

Abstract

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We study emission of particles and photons from a pulsar polar cap. The Goldreich-Julian model for the regime of free emission of charged particles from the neutron star surface is used. In this case the electric field is generated due to the general relativistic effect of dragging of inertial frames. The spectra and shapes of gamma-ray pulses, the parameters of the electron-positron plasma and the intensity of X-ray emission from hot spots in the polar region of radio pulsars are discussed. The effect of non-dipole magnetic field on X-ray emission of polar caps is considered. It is shown that the increase of magnetic line curvature leads to much smaller temperatures and X-ray luminosities of the polar caps as compared with the purely dipole field.

Type
Part 6. Emission and Plasma Theory
Information
International Astronomical Union Colloquium , Volume 177: Pulsar Astronomy - 2000 and Beyond , 2000 , pp. 473 - 478
Copyright
Copyright © Astronomical Society of the Pacific 2000

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