Kinetic‐Scale Turbulence in the Venusian Magnetosheath

Bowen, T. A.; Bale, S. D.; Bandyopadhyay, R.; Bonnell, J. W.; Case, A. W.; Chasapis, A.; Chen, C. H. K.; Curry, S.; Wit, T. Dudok de; Goetz, K.; Goodrich, K.; Gruesbeck, J.; Halekas, J. S.; Howes, G. G.; Kasper, J. C.; Korreck, K. E.; Larson, D. E.; Livi, R.; MacDowall, R. J.; Malaspina, D.; Mallet, Alfred; McManus, Michael D.; Page, Brent; Pulupa, M.; Raouafi, N. E.; Stevens, Michael L.; Whittlesey, P. L.

doi:10.1029/2020gl090783

Cited by 16 publications

(10 citation statements)

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“…Regarding scale-dependent behavior of K, we observe an increase at MHD scales and then reduces or plateaus in the sub-ion range, see Figures 5 and 7, consistent with the results of Kiyani et al (2009) et al (2021). This is different from what is typically observed in planetary magnetosheaths (Alberti et al, 2021;Bowen et al, 2021;Chhiber et al, 2018;Tao et al, 2015;von Papen et al, 2014;Yordanova et al, 2020). However, there are some observations of weak intermittency in planetary magnetosheaths behind the quasi perpendicular shock (e.g., Hadid et al, 2015), where ion instabilities may be at work to reduce strong temperature anisotropy.…”

Section: Summary and Discussioncontrasting

confidence: 61%

Scale‐Dependent Kurtosis of Magnetic Field Fluctuations in the Solar Wind: A Multi‐Scale Study With Cluster 2003–2015

et al. 2022

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The solar wind is an excellent example of weakly compressive plasma turbulence (Bruno & Carbone, 2013). Compared to a neutral fluid, the physics is complicated by electromagnetic fields and various charged species with several different characteristic time and length scales. Existence of these scales result in several different distinct ranges where either fluid physics, proton kinetic, or electron kinetic physics dominate the dynamics of the plasma (

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Section: Summary and Discussioncontrasting

confidence: 61%

Scale‐Dependent Kurtosis of Magnetic Field Fluctuations in the Solar Wind: A Multi‐Scale Study With Cluster 2003–2015

et al. 2022

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“…As of this writing, five flybys have occurred so far (VGA1–VGA5). These encounters are providing new information about the planetary environment, particularly its interaction with the solar wind (e.g., Bowen et al., 2021 ).…”

Section: Observationsmentioning

confidence: 99%

Parker Solar Probe Imaging of the Night Side of Venus

Wood

Hess

Lustig‐Yaeger

et al. 2022

Geophysical Research Letters

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Although Venus is the brightest planet in the sky, its surface was long a mystery due to the opacity of its thick atmosphere. Optical images of the planet show a featureless white disk, dominated by scattered sunlight from the impenetrable atmosphere. Radar imaging from Earth provided the first means to see the surface (e.g., Goldstein et al., 1976;Rogers & Ingalls, 1969), but detailed mapping had to await the arrival of orbiting spacecraft with radar capabilities, particularly Magellan (e.g., Solomon et al., 1992).Starting with the work of Allen and Crawford (1984), it was found that it was possible to penetrate the thick Venusian atmosphere by observing nightside thermal emissions in the near infrared (NIR), providing a means to study both the surface and lower atmosphere (

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“…The Parker Solar Probe (Fox et al 2016) has a total of seven Venus flybys to adjust the spacecraft's orbit for closer perihelia during solar encounters. Two flybys on 3 October 2018 and 26 December 2019, approaching Venus from downstream, showed strong kinetic-scale turbulence in the magnetosheath (Bowen et al 2021), sub-proton scale magnetic holes (Goodrich et al 2021), and double layers near the bow shock (Malaspina et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Solar Orbiter’s first Venus flyby

Volwerk

Horbury

Woodham

et al. 2021

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Context. The induced magnetosphere of Venus is caused by the interaction of the solar wind and embedded interplanetary magnetic field with the exosphere and ionosphere of Venus. Solar Orbiter entered Venus’s magnetotail far downstream, > 70 Venus radii, of the planet and exited the magnetosphere over the north pole. This offered a unique view of the system over distances that had only been flown through before by three other missions, Mariner 10, Galileo, and BepiColombo. Aims. In this study, we study the large-scale structure and activity of the induced magnetosphere as well as the high-frequency plasma waves both in the magnetosphere and in a limited region upstream of the planet where interaction with Venus’s exosphere is expected. Methods. The large-scale structure of the magnetosphere was studied with low-pass filtered data and identified events are investigated with a minimum variance analysis as well as combined with plasma data. The high-frequency plasma waves were studied with spectral analysis. Results. We find that Venus’s magnetotail is very active during the Solar Orbiter flyby. Structures such as flux ropes and reconnection sites were encountered, in addition to a strong overdraping of the magnetic field downstream of the bow shock and planet. High-frequency plasma waves (up to six times the local proton cyclotron frequency) are observed in the magnetotail, which are identified as Doppler-shifted proton cyclotron waves, whereas in the upstream solar wind, these waves appear just below the proton cyclotron frequency (as expected) but are very patchy. The bow shock is quasi-perpendicular, however, expected mirror mode activity is not found directly behind it; instead, there is strong cyclotron wave power. This is most likely caused by the relatively low plasma-β behind the bow shock. Much further downstream, magnetic hole or mirror mode structures are identified in the magnetosheath.

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Kinetic‐Scale Turbulence in the Venusian Magnetosheath

Cited by 16 publications

References 100 publications

Scale‐Dependent Kurtosis of Magnetic Field Fluctuations in the Solar Wind: A Multi‐Scale Study With Cluster 2003–2015

Scale‐Dependent Kurtosis of Magnetic Field Fluctuations in the Solar Wind: A Multi‐Scale Study With Cluster 2003–2015

Parker Solar Probe Imaging of the Night Side of Venus

Solar Orbiter’s first Venus flyby

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