First ENA observations at Mars: Charge exchange ENAs produced in the magnetosheath

H. Gunell; K. Brinkfeldt; M. Holmström; P. C. Brandt; S. Barabash; E. Kallio; A. Ekenbäck; Y. Futaana; R. Lundin; H. Andersson; M. Yamauchi; A. Grigoriev; J. D. Winningham; R. A. Frahm; J. R. Sharber; J. R. Scherrer; A. J. Coates; D. R. Linder; D. O. Kataria; T. Säles; P. Riihelä; W. Schmidt; H. Koskinen; J. Kozyra; J. Luhmann; E. Roelof; D. Williams; S. Livi; C. C. Curtis; K. C. Hsieh; B. R. Sandel; M. Grande; M. Carter; J. A. Sauvaud; A. Fedorov; J. J. Thocaven; S. McKenna-Lawler; S. Orsini; R. Cerulli-Irelli; M. Maggi; P. Wurz; P. Bochsler; N. Krupp; J. Woch; M. Fränz; K. Asamura; C. Dierker

doi:10.1016/j.icarus.2005.10.027

First ENA observations at Mars: Charge exchange ENAs produced in the magnetosheath

H. Gunell^*, K. Brinkfeldt, M. Holmström, P. C. Brandt, S. Barabash, E. Kallio, A. Ekenbäck, Y. Futaana, R. Lundin, H. Andersson, M. Yamauchi, A. Grigoriev, J. D. Winningham, R. A. Frahm, J. R. Sharber, J. R. Scherrer, A. J. Coates, D. R. Linder, D. O. Kataria, T. SälesP. Riihelä, W. Schmidt, H. Koskinen, J. Kozyra, J. Luhmann, E. Roelof, D. Williams, S. Livi, C. C. Curtis, K. C. Hsieh, B. R. Sandel, M. Grande, M. Carter, J. A. Sauvaud, A. Fedorov, J. J. Thocaven, S. McKenna-Lawler, S. Orsini, R. Cerulli-Irelli, M. Maggi, P. Wurz, P. Bochsler, N. Krupp, J. Woch, M. Fränz, K. Asamura, C. Dierker

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

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Abstract

Measurements of energetic neutral atoms (ENA) generated in the magnetosheath at Mars are reported. These ENAs are the result of charge exchange collisions between solar wind protons and neutral oxygen and hydrogen in the exosphere of Mars. The peak of the observed ENA flux is 1.3 × 10¹¹ m^-2 sr^-1 s^-1. For the case studied here, i.e., the passage of Mars Express through the martian magnetosheath around 20:15 UT on 3 May 2004, the measurements agree with an analytical model of the ENA production at the planet. It is possible to find parameter values in the model such that the observed peak in the ENA count rate during the spacecraft passage through the magnetosheath is reproduced.

Original language	English
Pages (from-to)	431-438
Number of pages	8
Journal	Icarus
Volume	182
Issue number	2
DOIs	https://doi.org/10.1016/j.icarus.2005.10.027
Publication status	Published - Jun 2006

Keywords

Magnetospheres
Mars
Solar wind

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Gunell, H., Brinkfeldt, K., Holmström, M., Brandt, P. C., Barabash, S., Kallio, E., Ekenbäck, A., Futaana, Y., Lundin, R., Andersson, H., Yamauchi, M., Grigoriev, A., Winningham, J. D., Frahm, R. A., Sharber, J. R., Scherrer, J. R., Coates, A. J., Linder, D. R., Kataria, D. O., ... Dierker, C. (2006). First ENA observations at Mars: Charge exchange ENAs produced in the magnetosheath. Icarus, 182(2), 431-438. https://doi.org/10.1016/j.icarus.2005.10.027

@article{b54c09fdbbc94877826cbefd8dbdea22,

title = "First ENA observations at Mars: Charge exchange ENAs produced in the magnetosheath",

abstract = "Measurements of energetic neutral atoms (ENA) generated in the magnetosheath at Mars are reported. These ENAs are the result of charge exchange collisions between solar wind protons and neutral oxygen and hydrogen in the exosphere of Mars. The peak of the observed ENA flux is 1.3 × 1011 m-2 sr-1 s-1. For the case studied here, i.e., the passage of Mars Express through the martian magnetosheath around 20:15 UT on 3 May 2004, the measurements agree with an analytical model of the ENA production at the planet. It is possible to find parameter values in the model such that the observed peak in the ENA count rate during the spacecraft passage through the magnetosheath is reproduced.",

keywords = "Magnetospheres, Mars, Solar wind",

author = "H. Gunell and K. Brinkfeldt and M. Holmstr{\"o}m and Brandt, {P. C.} and S. Barabash and E. Kallio and A. Ekenb{\"a}ck and Y. Futaana and R. Lundin and H. Andersson and M. Yamauchi and A. Grigoriev and Winningham, {J. D.} and Frahm, {R. A.} and Sharber, {J. R.} and Scherrer, {J. R.} and Coates, {A. J.} and Linder, {D. R.} and Kataria, {D. O.} and T. S{\"a}les and P. Riihel{\"a} and W. Schmidt and H. Koskinen and J. Kozyra and J. Luhmann and E. Roelof and D. Williams and S. Livi and Curtis, {C. C.} and Hsieh, {K. C.} and Sandel, {B. R.} and M. Grande and M. Carter and Sauvaud, {J. A.} and A. Fedorov and Thocaven, {J. J.} and S. McKenna-Lawler and S. Orsini and R. Cerulli-Irelli and M. Maggi and P. Wurz and P. Bochsler and N. Krupp and J. Woch and M. Fr{\"a}nz and K. Asamura and C. Dierker",

note = "Funding Information: The ASPERA-3 experiment on the European Space Agency (ESA) Mars Express mission is a joint effort between 15 laboratories in 10 countries, all sponsored by their national agencies. We thank all these agencies as well as the various departments/institutes hosting these efforts. We thank the Swedish National Space Board for its support of the first author. We also acknowledge the Swedish National Space Board for their support of the main PI-institute and we are indebted to ESA for their courage in embarking on the Mars Express program, the first ESA mission to the red planet. Copyright: Copyright 2006 Elsevier B.V., All rights reserved.",

year = "2006",

month = jun,

doi = "10.1016/j.icarus.2005.10.027",

language = "English",

volume = "182",

pages = "431--438",

journal = "Icarus",

issn = "0019-1035",

publisher = "Elsevier",

number = "2",

}

Gunell, H, Brinkfeldt, K, Holmström, M, Brandt, PC, Barabash, S, Kallio, E, Ekenbäck, A, Futaana, Y, Lundin, R, Andersson, H, Yamauchi, M, Grigoriev, A, Winningham, JD, Frahm, RA, Sharber, JR, Scherrer, JR, Coates, AJ, Linder, DR, Kataria, DO, Säles, T, Riihelä, P, Schmidt, W, Koskinen, H, Kozyra, J, Luhmann, J, Roelof, E, Williams, D, Livi, S, Curtis, CC, Hsieh, KC, Sandel, BR, Grande, M, Carter, M, Sauvaud, JA, Fedorov, A, Thocaven, JJ, McKenna-Lawler, S, Orsini, S, Cerulli-Irelli, R, Maggi, M, Wurz, P, Bochsler, P, Krupp, N, Woch, J, Fränz, M, Asamura, K & Dierker, C 2006, 'First ENA observations at Mars: Charge exchange ENAs produced in the magnetosheath', Icarus, vol. 182, no. 2, pp. 431-438. https://doi.org/10.1016/j.icarus.2005.10.027

TY - JOUR

T1 - First ENA observations at Mars

T2 - Charge exchange ENAs produced in the magnetosheath

AU - Gunell, H.

AU - Brinkfeldt, K.

AU - Holmström, M.

AU - Brandt, P. C.

AU - Barabash, S.

AU - Kallio, E.

AU - Ekenbäck, A.

AU - Futaana, Y.

AU - Lundin, R.

AU - Andersson, H.

AU - Yamauchi, M.

AU - Grigoriev, A.

AU - Winningham, J. D.

AU - Frahm, R. A.

AU - Sharber, J. R.

AU - Scherrer, J. R.

AU - Coates, A. J.

AU - Linder, D. R.

AU - Kataria, D. O.

AU - Säles, T.

AU - Riihelä, P.

AU - Schmidt, W.

AU - Koskinen, H.

AU - Kozyra, J.

AU - Luhmann, J.

AU - Roelof, E.

AU - Williams, D.

AU - Livi, S.

AU - Curtis, C. C.

AU - Hsieh, K. C.

AU - Sandel, B. R.

AU - Grande, M.

AU - Carter, M.

AU - Sauvaud, J. A.

AU - Fedorov, A.

AU - Thocaven, J. J.

AU - McKenna-Lawler, S.

AU - Orsini, S.

AU - Cerulli-Irelli, R.

AU - Maggi, M.

AU - Wurz, P.

AU - Bochsler, P.

AU - Krupp, N.

AU - Woch, J.

AU - Fränz, M.

AU - Asamura, K.

AU - Dierker, C.

N1 - Funding Information: The ASPERA-3 experiment on the European Space Agency (ESA) Mars Express mission is a joint effort between 15 laboratories in 10 countries, all sponsored by their national agencies. We thank all these agencies as well as the various departments/institutes hosting these efforts. We thank the Swedish National Space Board for its support of the first author. We also acknowledge the Swedish National Space Board for their support of the main PI-institute and we are indebted to ESA for their courage in embarking on the Mars Express program, the first ESA mission to the red planet. Copyright: Copyright 2006 Elsevier B.V., All rights reserved.

PY - 2006/6

Y1 - 2006/6

N2 - Measurements of energetic neutral atoms (ENA) generated in the magnetosheath at Mars are reported. These ENAs are the result of charge exchange collisions between solar wind protons and neutral oxygen and hydrogen in the exosphere of Mars. The peak of the observed ENA flux is 1.3 × 1011 m-2 sr-1 s-1. For the case studied here, i.e., the passage of Mars Express through the martian magnetosheath around 20:15 UT on 3 May 2004, the measurements agree with an analytical model of the ENA production at the planet. It is possible to find parameter values in the model such that the observed peak in the ENA count rate during the spacecraft passage through the magnetosheath is reproduced.

AB - Measurements of energetic neutral atoms (ENA) generated in the magnetosheath at Mars are reported. These ENAs are the result of charge exchange collisions between solar wind protons and neutral oxygen and hydrogen in the exosphere of Mars. The peak of the observed ENA flux is 1.3 × 1011 m-2 sr-1 s-1. For the case studied here, i.e., the passage of Mars Express through the martian magnetosheath around 20:15 UT on 3 May 2004, the measurements agree with an analytical model of the ENA production at the planet. It is possible to find parameter values in the model such that the observed peak in the ENA count rate during the spacecraft passage through the magnetosheath is reproduced.

KW - Magnetospheres

KW - Mars

KW - Solar wind

UR - http://www.scopus.com/inward/record.url?scp=33747336270&partnerID=8YFLogxK

U2 - 10.1016/j.icarus.2005.10.027

DO - 10.1016/j.icarus.2005.10.027

M3 - Article

AN - SCOPUS:33747336270

SN - 0019-1035

VL - 182

SP - 431

EP - 438

JO - Icarus

JF - Icarus

IS - 2

ER -

First ENA observations at Mars: Charge exchange ENAs produced in the magnetosheath

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