Venusian bow shock as seen by the ASPERA-4 ion instrument on Venus Express

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Venusian bow shock as seen by the ASPERA-4 ion instrument on Venus Express. / Whittaker, I.; Guymer, G.; Grande, M.; Pintér, B.; Barabash, S.; Federov, A.; Mazelle, C.; Sauvaud, J. A.; Lundin, R.; Russell, C. T.; Futaana, Y.; Fränz, M.; Zhang, T. L.; Andersson, H.; Grigoriev, A.; Holmström, M.; Yamauchi, M.; Asamura, K.; Baumjohann, W.; Lammer, H.; Coates, A. J.; Kataria, D. O.; Linder, D. R.; Curtis, C. C.; Hsieh, K. C.; Koskinen, H. E. J.; Kallio, E.; Riihelä, P.; Schmidt, W.; Kozyra, J.; Mckenna-Lawlor, S.; Thocaven, J. J.; Orsini, S.; Cerulli-Irelli, R.; Mura, A.; Milillo, M.; Maggi, M.; Roelof, E.; Brandt, P.; Frahm, R. A.; Sharber, J. R.; Wurz, P.; Bochsler, P.

In: Journal of Geophysical Research: Space Physics, Vol. 115, No. A9, A09224, 28.09.2010, p. n/a.

Research output: Contribution to journalArticlepeer-review

Harvard

Whittaker, I, Guymer, G, Grande, M, Pintér, B, Barabash, S, Federov, A, Mazelle, C, Sauvaud, JA, Lundin, R, Russell, CT, Futaana, Y, Fränz, M, Zhang, TL, Andersson, H, Grigoriev, A, Holmström, M, Yamauchi, M, Asamura, K, Baumjohann, W, Lammer, H, Coates, AJ, Kataria, DO, Linder, DR, Curtis, CC, Hsieh, KC, Koskinen, HEJ, Kallio, E, Riihelä, P, Schmidt, W, Kozyra, J, Mckenna-Lawlor, S, Thocaven, JJ, Orsini, S, Cerulli-Irelli, R, Mura, A, Milillo, M, Maggi, M, Roelof, E, Brandt, P, Frahm, RA, Sharber, JR, Wurz, P & Bochsler, P 2010, 'Venusian bow shock as seen by the ASPERA-4 ion instrument on Venus Express', Journal of Geophysical Research: Space Physics, vol. 115, no. A9, A09224, pp. n/a. https://doi.org/10.1029/2009JA014826

APA

Whittaker, I., Guymer, G., Grande, M., Pintér, B., Barabash, S., Federov, A., Mazelle, C., Sauvaud, J. A., Lundin, R., Russell, C. T., Futaana, Y., Fränz, M., Zhang, T. L., Andersson, H., Grigoriev, A., Holmström, M., Yamauchi, M., Asamura, K., Baumjohann, W., ... Bochsler, P. (2010). Venusian bow shock as seen by the ASPERA-4 ion instrument on Venus Express. Journal of Geophysical Research: Space Physics, 115(A9), n/a. [A09224]. https://doi.org/10.1029/2009JA014826

Vancouver

Whittaker I, Guymer G, Grande M, Pintér B, Barabash S, Federov A et al. Venusian bow shock as seen by the ASPERA-4 ion instrument on Venus Express. Journal of Geophysical Research: Space Physics. 2010 Sep 28;115(A9):n/a. A09224. https://doi.org/10.1029/2009JA014826

Author

Whittaker, I. ; Guymer, G. ; Grande, M. ; Pintér, B. ; Barabash, S. ; Federov, A. ; Mazelle, C. ; Sauvaud, J. A. ; Lundin, R. ; Russell, C. T. ; Futaana, Y. ; Fränz, M. ; Zhang, T. L. ; Andersson, H. ; Grigoriev, A. ; Holmström, M. ; Yamauchi, M. ; Asamura, K. ; Baumjohann, W. ; Lammer, H. ; Coates, A. J. ; Kataria, D. O. ; Linder, D. R. ; Curtis, C. C. ; Hsieh, K. C. ; Koskinen, H. E. J. ; Kallio, E. ; Riihelä, P. ; Schmidt, W. ; Kozyra, J. ; Mckenna-Lawlor, S. ; Thocaven, J. J. ; Orsini, S. ; Cerulli-Irelli, R. ; Mura, A. ; Milillo, M. ; Maggi, M. ; Roelof, E. ; Brandt, P. ; Frahm, R. A. ; Sharber, J. R. ; Wurz, P. ; Bochsler, P. / Venusian bow shock as seen by the ASPERA-4 ion instrument on Venus Express. In: Journal of Geophysical Research: Space Physics. 2010 ; Vol. 115, No. A9. pp. n/a.

Bibtex - Download

@article{d93996b26bfe4953933a0d2bd3c50d7f,
title = "Venusian bow shock as seen by the ASPERA-4 ion instrument on Venus Express",
abstract = "The Analyzer of Space Plasmas and Energetic Atoms (ASPERA-4) instrument on Venus Express is used to determine bow shock position at Venus using ion data alone, using data recorded during a solar minimum from the Ion Mass Analyzer (IMA) which is part of the ASPERA-4 package. Previous models constructed from solar minimum data using Venus Express, Pioneer Venus Orbiter (PVO) and Venera 9 and 10 are also compared to the current fit. An important feature of this new fit is a statistical accuracy introduced in the form of a probability weighting function for the data points, based on the time spent in particular locations. The bow shock curve is then compared to two-dimensional ion maps. These verify the accuracy of this and previous solar minimum fit curves based on PVO and Venus Express magnetic data. Comparing all bow shock models to the 2D ion maps shows that a combination of models produces the best fit. Since all the fitted curves show differences in position they are investigated relative to the solar conditions pertaining at the times when the individual data sets were measured. The sub solar point and terminator distance were thus found to vary linearly with sunspot number and hence with solar activity. This relationship, which was already known to exist between solar maximum and solar minimum, is now shown to exist between different solar minima and even within the same minimum. This indicates a need for the mechanisms for bow shock maintenance and variance to be more closely modeled.",
keywords = "venus, bow shock, ions",
author = "I. Whittaker and G. Guymer and M. Grande and B. Pint{\'e}r and S. Barabash and A. Federov and C. Mazelle and Sauvaud, {J. A.} and R. Lundin and Russell, {C. T.} and Y. Futaana and M. Fr{\"a}nz and Zhang, {T. L.} and H. Andersson and A. Grigoriev and M. Holmstr{\"o}m and M. Yamauchi and K. Asamura and W. Baumjohann and H. Lammer and Coates, {A. J.} and Kataria, {D. O.} and Linder, {D. R.} and Curtis, {C. C.} and Hsieh, {K. C.} and Koskinen, {H. E. J.} and E. Kallio and P. Riihel{\"a} and W. Schmidt and J. Kozyra and S. Mckenna-Lawlor and Thocaven, {J. J.} and S. Orsini and R. Cerulli-Irelli and A. Mura and M. Milillo and M. Maggi and E. Roelof and P. Brandt and Frahm, {R. A.} and Sharber, {J. R.} and P. Wurz and P. Bochsler",
note = "Thesis work of Whittaker and Guymer (PhD students of M.Grande)",
year = "2010",
month = sep,
day = "28",
doi = "10.1029/2009JA014826",
language = "English",
volume = "115",
pages = "n/a",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9380",
publisher = "American Geophysical Union",
number = "A9",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Venusian bow shock as seen by the ASPERA-4 ion instrument on Venus Express

AU - Whittaker, I.

AU - Guymer, G.

AU - Grande, M.

AU - Pintér, B.

AU - Barabash, S.

AU - Federov, A.

AU - Mazelle, C.

AU - Sauvaud, J. A.

AU - Lundin, R.

AU - Russell, C. T.

AU - Futaana, Y.

AU - Fränz, M.

AU - Zhang, T. L.

AU - Andersson, H.

AU - Grigoriev, A.

AU - Holmström, M.

AU - Yamauchi, M.

AU - Asamura, K.

AU - Baumjohann, W.

AU - Lammer, H.

AU - Coates, A. J.

AU - Kataria, D. O.

AU - Linder, D. R.

AU - Curtis, C. C.

AU - Hsieh, K. C.

AU - Koskinen, H. E. J.

AU - Kallio, E.

AU - Riihelä, P.

AU - Schmidt, W.

AU - Kozyra, J.

AU - Mckenna-Lawlor, S.

AU - Thocaven, J. J.

AU - Orsini, S.

AU - Cerulli-Irelli, R.

AU - Mura, A.

AU - Milillo, M.

AU - Maggi, M.

AU - Roelof, E.

AU - Brandt, P.

AU - Frahm, R. A.

AU - Sharber, J. R.

AU - Wurz, P.

AU - Bochsler, P.

N1 - Thesis work of Whittaker and Guymer (PhD students of M.Grande)

PY - 2010/9/28

Y1 - 2010/9/28

N2 - The Analyzer of Space Plasmas and Energetic Atoms (ASPERA-4) instrument on Venus Express is used to determine bow shock position at Venus using ion data alone, using data recorded during a solar minimum from the Ion Mass Analyzer (IMA) which is part of the ASPERA-4 package. Previous models constructed from solar minimum data using Venus Express, Pioneer Venus Orbiter (PVO) and Venera 9 and 10 are also compared to the current fit. An important feature of this new fit is a statistical accuracy introduced in the form of a probability weighting function for the data points, based on the time spent in particular locations. The bow shock curve is then compared to two-dimensional ion maps. These verify the accuracy of this and previous solar minimum fit curves based on PVO and Venus Express magnetic data. Comparing all bow shock models to the 2D ion maps shows that a combination of models produces the best fit. Since all the fitted curves show differences in position they are investigated relative to the solar conditions pertaining at the times when the individual data sets were measured. The sub solar point and terminator distance were thus found to vary linearly with sunspot number and hence with solar activity. This relationship, which was already known to exist between solar maximum and solar minimum, is now shown to exist between different solar minima and even within the same minimum. This indicates a need for the mechanisms for bow shock maintenance and variance to be more closely modeled.

AB - The Analyzer of Space Plasmas and Energetic Atoms (ASPERA-4) instrument on Venus Express is used to determine bow shock position at Venus using ion data alone, using data recorded during a solar minimum from the Ion Mass Analyzer (IMA) which is part of the ASPERA-4 package. Previous models constructed from solar minimum data using Venus Express, Pioneer Venus Orbiter (PVO) and Venera 9 and 10 are also compared to the current fit. An important feature of this new fit is a statistical accuracy introduced in the form of a probability weighting function for the data points, based on the time spent in particular locations. The bow shock curve is then compared to two-dimensional ion maps. These verify the accuracy of this and previous solar minimum fit curves based on PVO and Venus Express magnetic data. Comparing all bow shock models to the 2D ion maps shows that a combination of models produces the best fit. Since all the fitted curves show differences in position they are investigated relative to the solar conditions pertaining at the times when the individual data sets were measured. The sub solar point and terminator distance were thus found to vary linearly with sunspot number and hence with solar activity. This relationship, which was already known to exist between solar maximum and solar minimum, is now shown to exist between different solar minima and even within the same minimum. This indicates a need for the mechanisms for bow shock maintenance and variance to be more closely modeled.

KW - venus

KW - bow shock

KW - ions

UR - http://hdl.handle.net/2160/8335

U2 - 10.1029/2009JA014826

DO - 10.1029/2009JA014826

M3 - Article

VL - 115

SP - n/a

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9380

IS - A9

M1 - A09224

ER -

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