Heating and Nonequilibrium Distributions of Ions in a Reverse Shock Wave of the SN 1987A Remnant


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Abstract

A hydrodynamical description of supernova remnants is based on the approximation of locally equilibrium particle distributions. Shock waves in supernova remnants at various stages of ejecta propagation are collisionless and form nonequilibrium particle distributions that relax slowly to quasiequilibrium distributions within a time longer than the hydrodynamic time. A kinetic model of the heating of ions behind the front of a shock wave in the SN 1987A remnant is considered with allowance for a complex chemical composition of the ejecta, and nonequilibrium distributions of ions in the vicinity of this shock wave are calculated. In addition to the quasi-Maxwellian peak, which determines the effective temperature of a given charge state of an ion, nonequilibriumdistributions of ions contain, in some cases, a suprethermal component, which may describe to the injection of ions in the process of cosmic-ray acceleration.

About the authors

Yu. A. Kropotina

Ioffe Physical-Technical Institute

Author for correspondence.
Email: juliett.k@gmail.com
Russian Federation, Politekhnicheskaya ul. 26, St. Petersburg, 194021

A. M. Bykov

Ioffe Physical-Technical Institute; Peter the Great St. Petersburg Polytechnic University

Email: juliett.k@gmail.com
Russian Federation, Politekhnicheskaya ul. 26, St. Petersburg, 194021; Politekhnicheskaya ul. 29, St. Petersburg, 195251

A. V. Kozlova

Ioffe Physical-Technical Institute; Sternberg Astronomical Institute (GAISh)

Email: juliett.k@gmail.com
Russian Federation, Politekhnicheskaya ul. 26, St. Petersburg, 194021; Universitetskii pr. 13, Moscow, 119992

A. M. Krassilchtchikov

Ioffe Physical-Technical Institute

Email: juliett.k@gmail.com
Russian Federation, Politekhnicheskaya ul. 26, St. Petersburg, 194021

K. P. Levenfish

Ioffe Physical-Technical Institute

Email: juliett.k@gmail.com
Russian Federation, Politekhnicheskaya ul. 26, St. Petersburg, 194021

S. I. Blinnikov

Institute for Theoretical and Experimental Physics; Dukhov All-Russia Research Institute of Automatics (VNIIA)

Email: juliett.k@gmail.com
Russian Federation, Bol’shaya Cheremuskinskaya ul. 25, Moscow, 117218; Sushchevskaya ul. 22, Moscow, 127055

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