Relativistic magnetosonic shock waves in synchrotron sources - Shock structure and nonthermal acceleration of positrons

Details Relativistic magnetosonic shock waves in synchrotron sources - Shock structure and nonthermal acceleration of positrons Relativistic magnetosonic shock waves in synchrotron sources - Shock structure and nonthermal acceleration of positrons

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...390..454h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 390, no. 2, May 10, 1992, p. 454-479. Research supported by Lawrence Liverm

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Computation

235

Crab Nebula, Cyclotron Radiation, Interstellar Matter, Particle Acceleration, Positrons, Pulsars, Shock Waves, Synchrotron Radiation, Computational Astrophysics, Electron-Positron Pairs, Energy Spectra, Magnetosonic Resonance, Numerical Analysis, Radio Jets (Astronomy), Relativistic Particles

Scientific paper

The theoretical properties of relativistic, transverse, magnetosonic collisionless shock waves in electron-positron-heavy ion plasmas of relevance to astrophysical sources of synchrotron radiation are investigated. Both 1D electromagnetic particle-in-cell simulations and quasi-linear theory are used to examine the spatial and kinetic structure of these nonlinear flows. A new process of shock acceleration of nonthermal positrons, in which the gyrating reflected heavy ions dissipate their energy in the form of collectively emitted, left-handed magnetosonic waves which are resonantly absorbed by the positrons immediately behind the ion reflection region, is described. Applications of the results to the termination shocks of pulsar winds and to the termination shocks of jets emanating from the AGN are outlined.

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