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Observations of Mod...
Observations of Modulation of Ion Flux in the Coma of Comet 67P/Churyumov-Gerasimenko
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- Goldstein, R. (författare)
- Southwest Res Inst, San Antonio, TX 78228 USA.
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- Burch, J. L. (författare)
- Southwest Res Inst, San Antonio, TX 78228 USA.
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- Llera, K. (författare)
- Southwest Res Inst, San Antonio, TX 78228 USA.
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- Altwegg, K. (författare)
- Univ Bern, Phys Inst, Bern, Switzerland.
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- Rubin, M. (författare)
- Univ Bern, Phys Inst, Bern, Switzerland.
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- Eriksson, Anders (författare)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Nilsson, H. (författare)
- Swedish Inst Space Phys, Kiruna, Sweden.
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Southwest Res Inst, San Antonio, TX 78228 USA Univ Bern, Phys Inst, Bern, Switzerland. (creator_code:org_t)
- American Geophysical Union (AGU), 2022
- 2022
- Engelska.
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Ingår i: Geophysical Research Letters. - : American Geophysical Union (AGU). - 0094-8276 .- 1944-8007. ; 49:11
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- On 6-8 June 2015, the Ion and Electron Sensor on board Rosetta observed keV-range water-group pickup ions arriving from the solar direction. Based on magnetic field intensification and variations, the appearance of the ions was likely to have been caused by a coronal mass ejection. During the 3-day period when Rosetta was 200 km from the comet, peak ion energy/charge (E/q) varied over a range from 50 eV to 1 keV in concert with neutral gas density variations caused by the rotation of the comet and its variable solar illumination. Thermal ion densities showed the same variations. The neutral density variations provided a unique opportunity to observe the repeated slowing of the solar wind by mass loading caused by charge exchange between energetic water-group ions and thermal water-group molecules. Such solar wind slowing was observed previously only by flyby missions that provided single events.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- comets
- plasma
- ions
- charge exchange
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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