Test-particle numerical simulations of energetic particles near the termination shock

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We present the results of recent non-diffusive test-particle numerical simulations of energetic-particle transport near the solar-wind termination shock. Here we focus on a distinct aspect of this problem: variations (spatial and temporal) in the intensities and anisotropies of low-energy protons (50 keV). Our simulations indicate that 50keV proton intensities are highly variable upstream of the shock with large anisotropies that are directed primarily away from the shock, whereas downstream of the shock, the intensity variations have a much smaller amplitude and the anisotropies are smaller. Our results are qualitatively consistent with recent Voyager 1 observations.

Original languageEnglish (US)
Title of host publicationAIP Conference Proceedings
Pages202-206
Number of pages5
Volume858
StatePublished - 2006
EventPHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference - Oahu, HI, United States
Duration: Mar 3 2006Mar 9 2006

Other

OtherPHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference
CountryUnited States
CityOahu, HI
Period3/3/063/9/06

Fingerprint

energetic particles
shock
anisotropy
simulation
proton energy
upstream
solar wind
protons

Keywords

  • Energetic particles
  • Helisoperhic magnetic fields
  • Solar wind termination shock

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Test-particle numerical simulations of energetic particles near the termination shock. / Giacalone, Joe; Jokipii, J. Randy.

AIP Conference Proceedings. Vol. 858 2006. p. 202-206.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Giacalone, J & Jokipii, JR 2006, Test-particle numerical simulations of energetic particles near the termination shock. in AIP Conference Proceedings. vol. 858, pp. 202-206, PHYSICS OF THE INNER HELIOSHEATH: Voyager Observations, Theory, and Future Prospects; 5th Annual IGPP International Astrophysics Conference, Oahu, HI, United States, 3/3/06.
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AB - We present the results of recent non-diffusive test-particle numerical simulations of energetic-particle transport near the solar-wind termination shock. Here we focus on a distinct aspect of this problem: variations (spatial and temporal) in the intensities and anisotropies of low-energy protons (50 keV). Our simulations indicate that 50keV proton intensities are highly variable upstream of the shock with large anisotropies that are directed primarily away from the shock, whereas downstream of the shock, the intensity variations have a much smaller amplitude and the anisotropies are smaller. Our results are qualitatively consistent with recent Voyager 1 observations.

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