Location of the bow shock and ion composition boundaries at Venus-initial determinations from Venus Express ASPERA-4

C. Martinecz, M. Fränz, J. Woch, N. Krupp, E. Roussos, E. Dubinin, U. Motschmann, S. Barabash, R. Lundin, M. Holmström, H. Andersson, M. Yamauchi, A. Grigoriev, Y. Futaana, K. Brinkfeldt, H. Gunell, R. A. Frahm, J. D. Winningham, J. R. Sharber, J. ScherrerA. J. Coates, D. R. Linder, D. O. Kataria, E. Kallio, T. Sales, W. Schmidt, P. Riihela, H. E J Koskinen, J. U. Kozyra, J. Luhmann, C. T. Russell, E. C. Roelof, P. Brandt, C. C. Curtis, K. C. Hsieh, B. R. Sandel, M. Grande, J. A. Sauvaud, A. Fedorov, J. J. Thocaven, C. Mazelle, S. McKenna-Lawler, S. Orsini, R. Cerulli-Irelli, M. Maggi, A. Mura, A. Milillo, P. Wurz, A. Galli, P. Bochsler, K. Asamura, K. Szegö, W. Baumjohann, T. L. Zhang, H. Lammer

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

For the first time since 1992 when the Pioneer Venus Orbiter (PVO) ceased to operate, there is again a plasma instrument in orbit around Venus, namely the ASPERA-4 flown on Venus Express (inserted into an elliptical polar orbit about the planet on April 11, 2006). In this paper we report on measurements made by the ion and electron sensors of ASPERA-4 during their first five months of operation and, thereby, determine the locations of both the Venus bow shock (BS) and the ion composition boundary (ICB) under solar minimum conditions. In contrast to previous studies based on PVO data, we employ a 3-parameter fit to achieve a realistic shape for the BS. We use a different technique to fit the ICB because this latter boundary cannot be represented by a conic section. Additionally we investigate the dependence of the location of the BS on solar wind ram pressure (based on ASPERA-4 solar wind data) and solar EUV flux (using a proxy from Earth).

Original languageEnglish
Pages (from-to)780-784
Number of pages5
JournalPlanetary and Space Science
Volume56
Issue number6
DOIs
Publication statusPublished - May 2008

Fingerprint

Venus (planet)
bows
Venus
Pioneer Venus 1 spacecraft
shock
solar wind
ion
polar orbits
elliptical orbits
solar flux
ions
ram
planets
orbits
sensors
planet
sensor
electrons
plasma
electron

Keywords

  • Bow shock
  • Ion composition boundary
  • Solar wind dynamic pressure
  • Solar wind interaction
  • Venus
  • Venus Express

ASJC Scopus subject areas

  • Geophysics
  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Location of the bow shock and ion composition boundaries at Venus-initial determinations from Venus Express ASPERA-4. / Martinecz, C.; Fränz, M.; Woch, J.; Krupp, N.; Roussos, E.; Dubinin, E.; Motschmann, U.; Barabash, S.; Lundin, R.; Holmström, M.; Andersson, H.; Yamauchi, M.; Grigoriev, A.; Futaana, Y.; Brinkfeldt, K.; Gunell, H.; Frahm, R. A.; Winningham, J. D.; Sharber, J. R.; Scherrer, J.; Coates, A. J.; Linder, D. R.; Kataria, D. O.; Kallio, E.; Sales, T.; Schmidt, W.; Riihela, P.; Koskinen, H. E J; Kozyra, J. U.; Luhmann, J.; Russell, C. T.; Roelof, E. C.; Brandt, P.; Curtis, C. C.; Hsieh, K. C.; Sandel, B. R.; Grande, M.; Sauvaud, J. A.; Fedorov, A.; Thocaven, J. J.; Mazelle, C.; McKenna-Lawler, S.; Orsini, S.; Cerulli-Irelli, R.; Maggi, M.; Mura, A.; Milillo, A.; Wurz, P.; Galli, A.; Bochsler, P.; Asamura, K.; Szegö, K.; Baumjohann, W.; Zhang, T. L.; Lammer, H.

In: Planetary and Space Science, Vol. 56, No. 6, 05.2008, p. 780-784.

Research output: Contribution to journalArticle

Martinecz, C, Fränz, M, Woch, J, Krupp, N, Roussos, E, Dubinin, E, Motschmann, U, Barabash, S, Lundin, R, Holmström, M, Andersson, H, Yamauchi, M, Grigoriev, A, Futaana, Y, Brinkfeldt, K, Gunell, H, Frahm, RA, Winningham, JD, Sharber, JR, Scherrer, J, Coates, AJ, Linder, DR, Kataria, DO, Kallio, E, Sales, T, Schmidt, W, Riihela, P, Koskinen, HEJ, Kozyra, JU, Luhmann, J, Russell, CT, Roelof, EC, Brandt, P, Curtis, CC, Hsieh, KC, Sandel, BR, Grande, M, Sauvaud, JA, Fedorov, A, Thocaven, JJ, Mazelle, C, McKenna-Lawler, S, Orsini, S, Cerulli-Irelli, R, Maggi, M, Mura, A, Milillo, A, Wurz, P, Galli, A, Bochsler, P, Asamura, K, Szegö, K, Baumjohann, W, Zhang, TL & Lammer, H 2008, 'Location of the bow shock and ion composition boundaries at Venus-initial determinations from Venus Express ASPERA-4', Planetary and Space Science, vol. 56, no. 6, pp. 780-784. https://doi.org/10.1016/j.pss.2007.07.007
Martinecz, C. ; Fränz, M. ; Woch, J. ; Krupp, N. ; Roussos, E. ; Dubinin, E. ; Motschmann, U. ; Barabash, S. ; Lundin, R. ; Holmström, M. ; Andersson, H. ; Yamauchi, M. ; Grigoriev, A. ; Futaana, Y. ; Brinkfeldt, K. ; Gunell, H. ; Frahm, R. A. ; Winningham, J. D. ; Sharber, J. R. ; Scherrer, J. ; Coates, A. J. ; Linder, D. R. ; Kataria, D. O. ; Kallio, E. ; Sales, T. ; Schmidt, W. ; Riihela, P. ; Koskinen, H. E J ; Kozyra, J. U. ; Luhmann, J. ; Russell, C. T. ; Roelof, E. C. ; Brandt, P. ; Curtis, C. C. ; Hsieh, K. C. ; Sandel, B. R. ; Grande, M. ; Sauvaud, J. A. ; Fedorov, A. ; Thocaven, J. J. ; Mazelle, C. ; McKenna-Lawler, S. ; Orsini, S. ; Cerulli-Irelli, R. ; Maggi, M. ; Mura, A. ; Milillo, A. ; Wurz, P. ; Galli, A. ; Bochsler, P. ; Asamura, K. ; Szegö, K. ; Baumjohann, W. ; Zhang, T. L. ; Lammer, H. / Location of the bow shock and ion composition boundaries at Venus-initial determinations from Venus Express ASPERA-4. In: Planetary and Space Science. 2008 ; Vol. 56, No. 6. pp. 780-784.
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abstract = "For the first time since 1992 when the Pioneer Venus Orbiter (PVO) ceased to operate, there is again a plasma instrument in orbit around Venus, namely the ASPERA-4 flown on Venus Express (inserted into an elliptical polar orbit about the planet on April 11, 2006). In this paper we report on measurements made by the ion and electron sensors of ASPERA-4 during their first five months of operation and, thereby, determine the locations of both the Venus bow shock (BS) and the ion composition boundary (ICB) under solar minimum conditions. In contrast to previous studies based on PVO data, we employ a 3-parameter fit to achieve a realistic shape for the BS. We use a different technique to fit the ICB because this latter boundary cannot be represented by a conic section. Additionally we investigate the dependence of the location of the BS on solar wind ram pressure (based on ASPERA-4 solar wind data) and solar EUV flux (using a proxy from Earth).",
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T1 - Location of the bow shock and ion composition boundaries at Venus-initial determinations from Venus Express ASPERA-4

AU - Martinecz, C.

AU - Fränz, M.

AU - Woch, J.

AU - Krupp, N.

AU - Roussos, E.

AU - Dubinin, E.

AU - Motschmann, U.

AU - Barabash, S.

AU - Lundin, R.

AU - Holmström, M.

AU - Andersson, H.

AU - Yamauchi, M.

AU - Grigoriev, A.

AU - Futaana, Y.

AU - Brinkfeldt, K.

AU - Gunell, H.

AU - Frahm, R. A.

AU - Winningham, J. D.

AU - Sharber, J. R.

AU - Scherrer, J.

AU - Coates, A. J.

AU - Linder, D. R.

AU - Kataria, D. O.

AU - Kallio, E.

AU - Sales, T.

AU - Schmidt, W.

AU - Riihela, P.

AU - Koskinen, H. E J

AU - Kozyra, J. U.

AU - Luhmann, J.

AU - Russell, C. T.

AU - Roelof, E. C.

AU - Brandt, P.

AU - Curtis, C. C.

AU - Hsieh, K. C.

AU - Sandel, B. R.

AU - Grande, M.

AU - Sauvaud, J. A.

AU - Fedorov, A.

AU - Thocaven, J. J.

AU - Mazelle, C.

AU - McKenna-Lawler, S.

AU - Orsini, S.

AU - Cerulli-Irelli, R.

AU - Maggi, M.

AU - Mura, A.

AU - Milillo, A.

AU - Wurz, P.

AU - Galli, A.

AU - Bochsler, P.

AU - Asamura, K.

AU - Szegö, K.

AU - Baumjohann, W.

AU - Zhang, T. L.

AU - Lammer, H.

PY - 2008/5

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N2 - For the first time since 1992 when the Pioneer Venus Orbiter (PVO) ceased to operate, there is again a plasma instrument in orbit around Venus, namely the ASPERA-4 flown on Venus Express (inserted into an elliptical polar orbit about the planet on April 11, 2006). In this paper we report on measurements made by the ion and electron sensors of ASPERA-4 during their first five months of operation and, thereby, determine the locations of both the Venus bow shock (BS) and the ion composition boundary (ICB) under solar minimum conditions. In contrast to previous studies based on PVO data, we employ a 3-parameter fit to achieve a realistic shape for the BS. We use a different technique to fit the ICB because this latter boundary cannot be represented by a conic section. Additionally we investigate the dependence of the location of the BS on solar wind ram pressure (based on ASPERA-4 solar wind data) and solar EUV flux (using a proxy from Earth).

AB - For the first time since 1992 when the Pioneer Venus Orbiter (PVO) ceased to operate, there is again a plasma instrument in orbit around Venus, namely the ASPERA-4 flown on Venus Express (inserted into an elliptical polar orbit about the planet on April 11, 2006). In this paper we report on measurements made by the ion and electron sensors of ASPERA-4 during their first five months of operation and, thereby, determine the locations of both the Venus bow shock (BS) and the ion composition boundary (ICB) under solar minimum conditions. In contrast to previous studies based on PVO data, we employ a 3-parameter fit to achieve a realistic shape for the BS. We use a different technique to fit the ICB because this latter boundary cannot be represented by a conic section. Additionally we investigate the dependence of the location of the BS on solar wind ram pressure (based on ASPERA-4 solar wind data) and solar EUV flux (using a proxy from Earth).

KW - Bow shock

KW - Ion composition boundary

KW - Solar wind dynamic pressure

KW - Solar wind interaction

KW - Venus

KW - Venus Express

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U2 - 10.1016/j.pss.2007.07.007

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EP - 784

JO - Planetary and Space Science

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