Numerical simulations of primary and secondary hydrogen ENA fluxes at 1 AU

Zirnstein, Eric; Heerikhuisen, Jacob; Pogorelov, Nikolai

doi:10.1063/1.4768776

Title: Numerical simulations of primary and secondary hydrogen ENA fluxes at 1 AU

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Abstract

The interaction between the solar wind (SW) and the local interstellar medium (LISM) creates energetic neutral atoms (ENAs), mainly Hydrogen (H), at energies similar to ions in the SW. H ENAs are born from charge exchanges between SW protons and LISM H atoms. A large portion of measurable primary ENAs are born in the inner heliosheath (IHS), where the heated and condensed SW plasma has a large thermal component to direct ENAs back toward 1 AU. Secondary ENAs, however, require secondary charge exchanges before being detected at 1 AU. Primary ENAs born in the supersonic and subsonic SW may exit the HP, charge exchange into pick-up ions (PUIs), and charge exchange again to become secondary ENAs. Recent IBEX observations show a ribbon of flux dominating the entire sky. It is possible that the IBEX ribbon is created through secondary charge exchange processes. In this article we present a numerical code that calculates primary and secondary H ENA fluxes by integrating along ENA trajectories. Here we will provide descriptions of the code and preliminary results.

Authors:

Zirnstein, Eric ^[1]; Heerikhuisen, Jacob ^[1]; Pogorelov, Nikolai ^[1]

Univ. of Alabama in Huntsville, Huntsville, AL (United States). Center for Space Plasma and Aeronomic Research (CSPAR); Univ. of Alabama in Huntsville, Huntsville, AL (United States). Dept. of Physics

Publication Date:: Tue Nov 20 00:00:00 EST 2012

Research Org.:: Univ. of Alabama, Huntsville, AL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Fusion Energy Sciences (FES); National Aeronautics and Space Administration (NASA)

OSTI Identifier:: 1326043

Grant/Contract Number:: SC0008334; NNX11AP91H

Resource Type:: Accepted Manuscript

Journal Name:: AIP Conference Proceedings

Additional Journal Information:: Journal Volume: 1500; Journal Issue: 1; Conference: Space Weather: The Space Radiation Environment: 11th Annual International Astrophysics Conference. AIP Conference Proceedings, Palm Springs, CA (United States), 19–23 Mar 2012; Journal ID: ISSN 0094-243X

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 79 ASTRONOMY AND ASTROPHYSICS; Energetic neutral atom; Solar wind-local; interstellar medium; Pick-up ion

Citation Formats


                    Zirnstein, Eric, Heerikhuisen, Jacob, and Pogorelov, Nikolai. Numerical simulations of primary and secondary hydrogen ENA fluxes at 1 AU.  United States: N. p., 2012. 
Web.  doi:10.1063/1.4768776.

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                    Zirnstein, Eric, Heerikhuisen, Jacob, & Pogorelov, Nikolai. Numerical simulations of primary and secondary hydrogen ENA fluxes at 1 AU.  United States.  https://doi.org/10.1063/1.4768776

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                    Zirnstein, Eric, Heerikhuisen, Jacob, and Pogorelov, Nikolai. Tue .  
"Numerical simulations of primary and secondary hydrogen ENA fluxes at 1 AU".  United States.  https://doi.org/10.1063/1.4768776.  https://www.osti.gov/servlets/purl/1326043.

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@article{osti_1326043,

  title        = {Numerical simulations of primary and secondary hydrogen ENA fluxes at 1 AU},

  author       = {Zirnstein, Eric and Heerikhuisen, Jacob and Pogorelov, Nikolai},

  abstractNote = {The interaction between the solar wind (SW) and the local interstellar medium (LISM) creates energetic neutral atoms (ENAs), mainly Hydrogen (H), at energies similar to ions in the SW. H ENAs are born from charge exchanges between SW protons and LISM H atoms. A large portion of measurable primary ENAs are born in the inner heliosheath (IHS), where the heated and condensed SW plasma has a large thermal component to direct ENAs back toward 1 AU. Secondary ENAs, however, require secondary charge exchanges before being detected at 1 AU. Primary ENAs born in the supersonic and subsonic SW may exit the HP, charge exchange into pick-up ions (PUIs), and charge exchange again to become secondary ENAs. Recent IBEX observations show a ribbon of flux dominating the entire sky. It is possible that the IBEX ribbon is created through secondary charge exchange processes. In this article we present a numerical code that calculates primary and secondary H ENA fluxes by integrating along ENA trajectories. Here we will provide descriptions of the code and preliminary results.},

  doi          = {10.1063/1.4768776},

  journal      = {AIP Conference Proceedings},

  number       = 1,

  volume       = 1500,

  place        = {United States},

  year         = {Tue Nov 20 00:00:00 EST 2012},

  month        = {Tue Nov 20 00:00:00 EST 2012}

}

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