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Title: Pickup Ion Effect of the Solar Wind Interaction with the Local Interstellar Medium

Pickup ions are created when interstellar neutral atoms resonantly exchange charge with the solar wind (SW) ions, especially in the supersonic part of the wind, where they carry most of the plasma pressure. Here we present numerical simulation results of the 3D heliospheric interface treating pickup ions as a separate proton fluid. To satisfy the fundamental conservation laws, we solve the system of equations describing the flow of the mixture of electrons, thermal protons, and pickup ions. To find the density and pressure of pickup ions behind the termination shock, we employ simple boundary conditions that take into account the \emph{Voyager} observations that showed that the decrease in the kinetic energy of the mixture at the termination shock predominantly contributed to the increase in the pressure of pickup ions. We show that this model adequately describes the flow of the plasma mixture and results in a noticeable decrease in the heliosheath width.
Authors:
 [1] ;  [1] ;  [2] ;  [1]
  1. Univ. of Alabama-Huntsville, Huntsville, AL (United States). Dept. of Space Science
  2. Russian Academy of Sciences (RAS), Moscow (Russian Federation). Inst. for Problems in Mechanics; Univ. of Alabama-Huntsville, Huntsville, AL (United States). Dept. of Space Science
Publication Date:
Grant/Contract Number:
SC0008334; NNX14AJ53G; NNX14AF41G; NNX14AF43G; OCI-1144120; NNX15AN72G; NNX16AG83G
Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Conference Series
Additional Journal Information:
Journal Volume: 767; Journal Issue: 1; Journal ID: ISSN 1742-6588
Publisher:
IOP Publishing
Research Org:
Univ. of Alabama, Huntsville, AL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS
OSTI Identifier:
1326109

Pogorelov, N. V., Bedford, M. C., Kryukov, I. A., and Zank, G. P.. Pickup Ion Effect of the Solar Wind Interaction with the Local Interstellar Medium. United States: N. p., Web. doi:10.1088/1742-6596/767/1/012020.
Pogorelov, N. V., Bedford, M. C., Kryukov, I. A., & Zank, G. P.. Pickup Ion Effect of the Solar Wind Interaction with the Local Interstellar Medium. United States. doi:10.1088/1742-6596/767/1/012020.
Pogorelov, N. V., Bedford, M. C., Kryukov, I. A., and Zank, G. P.. 2016. "Pickup Ion Effect of the Solar Wind Interaction with the Local Interstellar Medium". United States. doi:10.1088/1742-6596/767/1/012020. https://www.osti.gov/servlets/purl/1326109.
@article{osti_1326109,
title = {Pickup Ion Effect of the Solar Wind Interaction with the Local Interstellar Medium},
author = {Pogorelov, N. V. and Bedford, M. C. and Kryukov, I. A. and Zank, G. P.},
abstractNote = {Pickup ions are created when interstellar neutral atoms resonantly exchange charge with the solar wind (SW) ions, especially in the supersonic part of the wind, where they carry most of the plasma pressure. Here we present numerical simulation results of the 3D heliospheric interface treating pickup ions as a separate proton fluid. To satisfy the fundamental conservation laws, we solve the system of equations describing the flow of the mixture of electrons, thermal protons, and pickup ions. To find the density and pressure of pickup ions behind the termination shock, we employ simple boundary conditions that take into account the \emph{Voyager} observations that showed that the decrease in the kinetic energy of the mixture at the termination shock predominantly contributed to the increase in the pressure of pickup ions. We show that this model adequately describes the flow of the plasma mixture and results in a noticeable decrease in the heliosheath width.},
doi = {10.1088/1742-6596/767/1/012020},
journal = {Journal of Physics. Conference Series},
number = 1,
volume = 767,
place = {United States},
year = {2016},
month = {11}
}