Journal Article

On the mechanism of the pulsed high-energy emission from the pulsar PSR B1509-58

N. Chkheidze and Z. Osmanov

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 419, issue 3, pages 2391-2395
Published in print January 2012 | ISSN: 0035-8711
Published online January 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.19887.x
On the mechanism of the pulsed high-energy emission from the pulsar PSR B1509-58

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We investigate the high-energy (<1 GeV) emission from the pulsar PSR B1509-58, and its relation to the radio emission in the 1.4-GHz frequency band. We investigate the role that quasi-linear diffusion plays in the production of pulsed high-energy radiation. We show that the relatively low-frequency waves are excited by cyclotron instability and, because of the diffusion process, this influences the particle distribution function and switches on the synchrotron emission mechanism. We argue that the coincidence of the high-energy main peak and the radio pulse is a direct consequence of the fact that both high- and low-frequency radiation are produced simultaneously in the local area of the pulsar magnetosphere. We also consider and explain the absence of the radio counter pulse.

Keywords: radiation mechanisms: non-thermal; pulsars: individual: PSR B1509-58

Journal Article.  3149 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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