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Hybrid simulations of the proton precipitation patterns onto the upper atmosphere of Mars

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Hybrid simulations of the proton precipitation patterns onto the upper atmosphere of Mars. / Dieval, Catherine; Kallio, Esa; Stenberg, Gabriella et al.
In: Earth, Planets and Space, Vol. 64, No. 2, 02.2012, p. 121-134.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Dieval, C, Kallio, E, Stenberg, G, Barabash, S & Jarvinen, R 2012, 'Hybrid simulations of the proton precipitation patterns onto the upper atmosphere of Mars', Earth, Planets and Space, vol. 64, no. 2, pp. 121-134. https://doi.org/10.5047/eps.2011.08.015

APA

Dieval, C., Kallio, E., Stenberg, G., Barabash, S., & Jarvinen, R. (2012). Hybrid simulations of the proton precipitation patterns onto the upper atmosphere of Mars. Earth, Planets and Space, 64(2), 121-134. https://doi.org/10.5047/eps.2011.08.015

Vancouver

Dieval C, Kallio E, Stenberg G, Barabash S, Jarvinen R. Hybrid simulations of the proton precipitation patterns onto the upper atmosphere of Mars. Earth, Planets and Space. 2012 Feb;64(2):121-134. doi: 10.5047/eps.2011.08.015

Author

Dieval, Catherine ; Kallio, Esa ; Stenberg, Gabriella et al. / Hybrid simulations of the proton precipitation patterns onto the upper atmosphere of Mars. In: Earth, Planets and Space. 2012 ; Vol. 64, No. 2. pp. 121-134.

Bibtex

@article{4e15cbd9b63f4143aaecf935b1755f5c,
title = "Hybrid simulations of the proton precipitation patterns onto the upper atmosphere of Mars",
abstract = "We study the dependence of proton precipitation patterns onto the Martian upper atmosphere on altitude, proton energy, proton origin, and in a lesser extent, solar zenith angle, using the HYB-Mars model, a 3D quasineutral hybrid model. We find that the flux of precipitating protons has a strong altitude dependence: on the dayside, the flux of precipitating protons decreases substantially when the altitude over Mars decreases. We also find that the contribution of exospheric protons to the deposition is significant and its spatial distribution is not identical to that of the solar wind protons. In addition, the low energy proton population comes mainly from the newborn planetary protons. The energized pick-up protons and solar wind protons contribute to the higherenergy proton population. The study also confirms that the proton precipitation is highly asymmetric with respect to the direction of the convection electric field in the solar wind. The study implies that the Martian induced magnetosphere protects the upper atmosphere effectively against proton precipitation.",
keywords = "Solar wind, Mars, Proton precipitation, Martian atmosphere, magnetospheres",
author = "Catherine Dieval and Esa Kallio and Gabriella Stenberg and Stas Barabash and Riku Jarvinen",
year = "2012",
month = feb,
doi = "10.5047/eps.2011.08.015",
language = "English",
volume = "64",
pages = "121--134",
journal = "Earth, Planets and Space",
issn = "1343-8832",
publisher = "Springer Heidelberg",
number = "2",

}

RIS

TY - JOUR

T1 - Hybrid simulations of the proton precipitation patterns onto the upper atmosphere of Mars

AU - Dieval, Catherine

AU - Kallio, Esa

AU - Stenberg, Gabriella

AU - Barabash, Stas

AU - Jarvinen, Riku

PY - 2012/2

Y1 - 2012/2

N2 - We study the dependence of proton precipitation patterns onto the Martian upper atmosphere on altitude, proton energy, proton origin, and in a lesser extent, solar zenith angle, using the HYB-Mars model, a 3D quasineutral hybrid model. We find that the flux of precipitating protons has a strong altitude dependence: on the dayside, the flux of precipitating protons decreases substantially when the altitude over Mars decreases. We also find that the contribution of exospheric protons to the deposition is significant and its spatial distribution is not identical to that of the solar wind protons. In addition, the low energy proton population comes mainly from the newborn planetary protons. The energized pick-up protons and solar wind protons contribute to the higherenergy proton population. The study also confirms that the proton precipitation is highly asymmetric with respect to the direction of the convection electric field in the solar wind. The study implies that the Martian induced magnetosphere protects the upper atmosphere effectively against proton precipitation.

AB - We study the dependence of proton precipitation patterns onto the Martian upper atmosphere on altitude, proton energy, proton origin, and in a lesser extent, solar zenith angle, using the HYB-Mars model, a 3D quasineutral hybrid model. We find that the flux of precipitating protons has a strong altitude dependence: on the dayside, the flux of precipitating protons decreases substantially when the altitude over Mars decreases. We also find that the contribution of exospheric protons to the deposition is significant and its spatial distribution is not identical to that of the solar wind protons. In addition, the low energy proton population comes mainly from the newborn planetary protons. The energized pick-up protons and solar wind protons contribute to the higherenergy proton population. The study also confirms that the proton precipitation is highly asymmetric with respect to the direction of the convection electric field in the solar wind. The study implies that the Martian induced magnetosphere protects the upper atmosphere effectively against proton precipitation.

KW - Solar wind

KW - Mars

KW - Proton precipitation

KW - Martian atmosphere

KW - magnetospheres

U2 - 10.5047/eps.2011.08.015

DO - 10.5047/eps.2011.08.015

M3 - Journal article

VL - 64

SP - 121

EP - 134

JO - Earth, Planets and Space

JF - Earth, Planets and Space

SN - 1343-8832

IS - 2

ER -