Comment on 'Ion acceleration at the contact surface of Comet P/Halley', by C. Gurgiolo and J. D. Winningham

Details Comment on 'Ion acceleration at the contact surface of Comet P/Halley', by C. Gurgiolo and J. D. Winningham Comment on 'Ion acceleration at the contact surface of Comet P/Halley', by C. Gurgiolo and J. D. Winningham

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9611641g&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, July 1, 1991, p. 11,641; Authors' Reply, p. 11,643-11,646.

Physics

1

Cometary Magnetospheres, Halley'S Comet, Ion Accelerators, Ionopause, Plasma Clouds, Space Plasmas

Scientific paper

It is argued that some of the conclusions in Gurgiolo and Winningham (GW, 1990) are unlikely. Arguments are made against the claim by GW that two 'ion enhancements' seen near the comet ionopause are due to impulse acceleration of the boundary producing heated plasma pulses, and also against the conclusions of GW that ions within the inner coma are ion beams narrow in energy and traveling across the cavity roughly parallel and antiparallel to the spacecraft motion and reflecting from the cavity boundary. In a reply, GW reaffirm their earlier findings.

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