BepiColombo mission confirms stagnation region of Venus and reveals its large extent
Moa Persson
(1)
,
Sae Aizawa
(1)
,
Nicolas André
(1)
,
Stanislav V. Barabash
(2)
,
Y. Saito
(3)
,
Y. Harada
(4)
,
Daniel Heyner
(5)
,
Stefano Orsini
(6)
,
Andréi Fedorov
(1)
,
Christian Mazelle
(1)
,
Yoshifumi Futaana
(2)
,
Lina Z. Hadid
(7)
,
Martin Volwerk
(8)
,
Glyn A. Collinson
(9)
,
Beatriz Sanchez-Cano
(10)
,
Alain Barthe
(1)
,
Emmanuel Penou
(1)
,
S. Yokota
(11)
,
Vincent N. Génot
(1)
,
Jean-André Sauvaud
(1)
,
Dominique C. Delcourt
(7)
,
Markus Fraenz
(12)
,
Ronan Modolo
(13)
,
Anna Milillo
(6)
,
Hans-Ulrich Auster
(5)
,
Ingo Richter
(5)
,
Johannes Z. D. Mieth
(5)
,
Phillippe H. Louarn
(1)
,
Christopher J. Owen
(14)
,
Timothy S. Horbury
(15)
,
Kazushi Asamura
(3)
,
S. Matsuda
(16)
,
Hans Nilsson
(2)
,
Martin Wieser
(2)
,
Tommaso Alberti
(6)
,
Ali Varsani
(8)
,
V. Mangano
(6)
,
Alessandro Mura
(6)
,
Herbert Iwo Maria Lichtenegger
(8)
,
Gunther Laky
(8)
,
Harald Jeszenszky
(8)
,
Kei Masunaga
(3)
,
Claire Signoles
(1)
,
Mathias Rojo
(1)
,
Go Murakami
(3)
1
IRAP -
Institut de recherche en astrophysique et planétologie
2 IRF - Swedish Institute of Space Physics [Kiruna]
3 ISAS - Institute of Space and Astronautical Science
4 Department of Geophysics [Kyoto]
5 IGEP - Institut für Geophysik und Extraterrestrische Physik [Braunschweig]
6 IAPS - Istituto di Astrofisica e Planetologia Spaziali - INAF
7 LPP - Laboratoire de Physique des Plasmas
8 IWF - Space Research Institute of Austrian Academy of Sciences
9 GSFC - NASA Goddard Space Flight Center
10 School of Physics and Astronomy [Leicester]
11 Department of Earth and Space Science [Osaka]
12 MPS - Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research
13 HELIOS - LATMOS
14 MSSL - Mullard Space Science Laboratory
15 Imperial College London
16 Graduate School of the Natural Science and Technology [Kanazawa]
2 IRF - Swedish Institute of Space Physics [Kiruna]
3 ISAS - Institute of Space and Astronautical Science
4 Department of Geophysics [Kyoto]
5 IGEP - Institut für Geophysik und Extraterrestrische Physik [Braunschweig]
6 IAPS - Istituto di Astrofisica e Planetologia Spaziali - INAF
7 LPP - Laboratoire de Physique des Plasmas
8 IWF - Space Research Institute of Austrian Academy of Sciences
9 GSFC - NASA Goddard Space Flight Center
10 School of Physics and Astronomy [Leicester]
11 Department of Earth and Space Science [Osaka]
12 MPS - Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research
13 HELIOS - LATMOS
14 MSSL - Mullard Space Science Laboratory
15 Imperial College London
16 Graduate School of the Natural Science and Technology [Kanazawa]
Moa Persson
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- Function : Correspondent author
- PersonId : 781986
- ORCID : 0000-0003-3497-3209
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Sae Aizawa
- Function : Author
- PersonId : 1072540
Yoshifumi Futaana
- Function : Author
- PersonId : 760863
- ORCID : 0000-0002-7056-3517
Beatriz Sanchez-Cano
- Function : Author
- PersonId : 795056
- ORCID : 0000-0003-0277-3253
- IdRef : 257649042
Jean-André Sauvaud
- Function : Author
- PersonId : 930857
Anna Milillo
- Function : Author
- PersonId : 1163228
- ORCID : 0000-0002-0266-2556
- IdRef : 243754914
Hans-Ulrich Auster
- Function : Author
- PersonId : 1163230
- ORCID : 0000-0003-1411-217X
Christopher J. Owen
- Function : Author
- PersonId : 758071
- ORCID : 0000-0002-5982-4667
Kazushi Asamura
- Function : Author
- PersonId : 1218181
- ORCID : 0000-0002-6076-3814
Tommaso Alberti
- Function : Author
- PersonId : 792766
- ORCID : 0000-0001-6096-0220
V. Mangano
- Function : Author
- PersonId : 766843
- ORCID : 0000-0002-9903-4053
Alessandro Mura
- Function : Author
- PersonId : 768260
- ORCID : 0000-0002-4552-4292
Kei Masunaga
- Function : Author
- PersonId : 797935
- ORCID : 0000-0001-9704-6993
Go Murakami
- Function : Author
- PersonId : 780125
- ORCID : 0000-0002-2759-7682
Abstract
The second Venus flyby of the BepiColombo mission offer a unique opportunity to make a complete tour of one of the few gas-dynamics dominated interaction regions between the supersonic solar wind and a Solar System object. The spacecraft pass through the full Venusian magnetosheath following the plasma streamlines, and cross the subsolar stagnation region during very stable solar wind conditions as observed upstream by the neighboring Solar Orbiter mission. These rare multipoint synergistic observations and stable conditions experimentally confirm what was previously predicted for the barely-explored stagnation region close to solar minimum. Here, we show that this region has a large extend, up to an altitude of 1900 km, and the estimated low energy transfer near the subsolar point confirm that the atmosphere of Venus, despite being non-magnetized and less conductive due to lower ultraviolet flux at solar minimum, is capable of withstanding the solar wind under low dynamic pressure.
Origin : Publisher files allowed on an open archive
Licence : CC BY - Attribution
Licence : CC BY - Attribution