Bunching mechanism for coherent curvature radiation in pulsar magnetospheres

view Abstract Citations (136) References (10) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Bunching mechanism for coherent curvature radiation in pulsar magnetospheres. Cheng, A. F. ; Ruderman, M. A. Abstract The special case of the axisymmetric steady-state magnetosphere of an aligned rotator is reviewed, and the motion along curved field lines of a relativistic electron-positron plasma created in such a magnetosphere is analyzed. The necessary velocity difference between the positrons and electrons is determined and related to the excitation of two-stream instabilities within the light cylinder, charge bunching, and the generation of coherent curvature radiation at microwave frequencies. The results are generalized to oblique-rotator geometries, and effects of forces due to the radiation field on the bunching amplitude are examined. It is found that for the unstable plasma modes considered, the inclusion of interactions with the radiation field can lead to amplification rather than dissipation of bunching. Publication: The Astrophysical Journal Pub Date: March 1977 DOI: 10.1086/155105 Bibcode: 1977ApJ...212..800C Keywords: Bunching; Charge Distribution; Coherent Radiation; Plasma-Particle Interactions; Pulsar Magnetospheres; Pulsars; Curvature; Electron Bunching; Electron Plasma; Electron-Positron Plasmas; Plasma Composition; Plasma-Electromagnetic Interaction; Positrons; Relativistic Plasmas; Stellar Atmospheres; Astrophysics full text sources ADS |

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