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Cherenkov-Curvature Radiation and Pulsar Radio Emission Generation

Lyutikov, Maxim and Machabeli, George and Blandford, Roger (1999) Cherenkov-Curvature Radiation and Pulsar Radio Emission Generation. Astrophysical Journal, 512 (2). pp. 804-826. ISSN 0004-637X. doi:10.1086/306806.

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Electromagnetic processes associated with a charged particle moving in a strong circular magnetic field are considered in cylindrical coordinates. We investigate the relation between the vacuum curvature emission and Cherenkov emission and argue that, for the superluminal motion of a particle in the inhomogeneous magnetic field in a dielectric, the combined effects of magnetic field inhomogeneity and the presence of a medium give rise to the synergetic Cherenkov-curvature emission process. We find the conditions under which the operator relations between electric field and electric displacement in cylindrical coordinates may be approximated by algebraic relations. For nonresonant electromagnetic waves, the interaction with particles streaming along the curved magnetic field may be described in the WKB approximation. For resonant waves interacting with superluminal particles we use a plane-wave approximation to compute the local dielectric tensor of a plasma in a weakly inhomogeneous magnetic field. We find in this approximation the polarization of normal modes in the plasma, Cherenkov-curvature and Cherenkov-drift emissivities and growth rates.

Item Type:Article
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URLURL TypeDescription Paper
Blandford, Roger0000-0002-1854-5506
Additional Information:© 1999 The American Astronomical Society. Received 1998 June 16; accepted 1998 September 24. M. L. would like to thank the Abastumani Astrophysics Observatory for hospitality during his stays in Tbilisi, and G. Z. M. acknowledges the support and hospitality during his stay at Caltech. This research was supported by NSF grant AST-9529170.
Funding AgencyGrant Number
Subject Keywords:MHD - pulsars : general - radiation mechanisms: nonthermal - radiative transfer - waves
Issue or Number:2
Record Number:CaltechAUTHORS:20190531-154110831
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Official Citation:Maxim Lyutikov et al 1999 ApJ 512 804
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96020
Deposited By: Tony Diaz
Deposited On:31 May 2019 22:46
Last Modified:16 Nov 2021 17:17

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