skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

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:
 [1];  [1];  [1]
  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:
Research Org.:
Univ. of Alabama, Huntsville, AL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24); National Aeronautic 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.
Zirnstein, Eric, Heerikhuisen, Jacob, & Pogorelov, Nikolai. Numerical simulations of primary and secondary hydrogen ENA fluxes at 1 AU. United States. doi:10.1063/1.4768776.
Zirnstein, Eric, Heerikhuisen, Jacob, and Pogorelov, Nikolai. Tue . "Numerical simulations of primary and secondary hydrogen ENA fluxes at 1 AU". United States. doi:10.1063/1.4768776. https://www.osti.gov/servlets/purl/1326043.
@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 = {2012},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

Save / Share: