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Mass loading at 67P/Churyumov-Gerasimenko: A case study
Luleå tekniska universitet, Institutionen för system- och rymdteknik.
Luleå tekniska universitet, Institutionen för system- och rymdteknik, Rymdteknik.
Swedish Institute of Space Physics.
Wigner Research Centre for Physics, 1121 Konkoly Thege Street 29-33, Budapest.
Vise andre og tillknytning
2016 (engelsk)Inngår i: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 43, nr 4, 1411-1418 s.Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We study the dynamics of the interaction between the solar wind ions and a partially ionized atmosphere around a comet, at a distance of 2.88 AU from the Sun during a period of low nucleus activity. Comparing particle data and magnetic field data for a case study, we highlight the prime role of the solar wind electric field in the cometary ion dynamics. Cometary ion and solar wind proton flow directions evolve in a correlated manner, as expected from the theory of mass loading. We find that the main component of the accelerated cometary ion flow direction is along the antisunward direction and not along the convective electric field direction. This is interpreted as the effect of an antisunward polarization electric field adding up to the solar wind convective electric field.

sted, utgiver, år, opplag, sider
2016. Vol. 43, nr 4, 1411-1418 s.
HSV kategori
Forskningsprogram
Atmosfärsvetenskap
Identifikatorer
URN: urn:nbn:se:ltu:diva-8286DOI: 10.1002/2015GL067436ISI: 000373109000001Lokal ID: 6c6ac809-0b7a-4666-8ba3-4712cf4ebf06OAI: oai:DiVA.org:ltu-8286DiVA: diva2:981178
Merknad

Validerad; 2016; Nivå 2; 20160219 (andbra)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2017-10-19bibliografisk kontrollert

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