Numerical simulation of shock waves near comets: structural features and energy dissipation mechanisms
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1985-06-18
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Galeev, A. A., Alexander Lipatov, and R. Z. Sagdeev. "Numerical simulation of shock waves near comets: structural features and energy dissipation mechanisms." Sov. Phys. JETP 62, no. 5 (November 1985): 866–871. http://www.jetp.ras.ru/cgi-bin/e/index/e/62/5/p866?a=list
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This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Galeev, A. A., Alexander Lipatov, and R. Z. Sagdeev. "Numerical simulation of shock waves near comets: structural features and energy dissipation mechanisms." Sov. Phys. JETP 62, no. 5 (November 1985): 866–871. http://www.jetp.ras.ru/cgi-bin/e/index/e/62/5/p866?a=list and may be found at http://www.jetp.ras.ru/cgi-bin/e/index/e/62/5/p866?a=list.
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Abstract
The structure of a shock wave near a comet is investigated by means of numerical simulation. It is shown that the main contribution to energy dissipation at the wave front is made by ions from the comet produced in the solar wind due to the ionization of the neutral atmosphere of the comet. Due to the high cyclotron gyration velocity, some of them go out ahead of the wave front and are further accelerated in the electric field of the solar wind. However, this dissipation is insufficient and a resistive jump with a much smaller scale is established inside the shock front on a scale comparable to the Larmor radius of a cometary ion.