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Birth of a comet magnetosphere: A spring of water ions
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Space Technology.
Swedish Institute of Space Physics.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering.
Aalto University, School of Electrical Engineering, Department of Radio Science and Engineering.
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Number of Authors: 29
2015 (English)In: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 347, no 6220, aaa0571Article in journal (Refereed) Published
Abstract [en]

The Rosetta mission shall accompany comet 67P/Churyumov-Gerasimenko from a heliocentric distance of >3.6 astronomical units through perihelion passage at 1.25 astronomical units, spanning low and maximum activity levels. Initially, the solar wind permeates the thin comet atmosphere formed from sublimation, until the size and plasma pressure of the ionized atmosphere define its boundaries: A magnetosphere is born. Using the Rosetta Plasma Consortium ion composition analyzer, we trace the evolution from the first detection of water ions to when the atmosphere begins repelling the solar wind (~3.3 astronomical units), and we report the spatial structure of this early interaction. The near-comet water population comprises accelerated ions (

Place, publisher, year, edition, pages
2015. Vol. 347, no 6220, aaa0571
National Category
Aerospace Engineering
Research subject
Space Technology; Atmospheric science
Identifiers
URN: urn:nbn:se:ltu:diva-3136DOI: 10.1126/science.aaa0571Local ID: 0eb80de3-affe-418a-a246-d47cfd5661a1OAI: oai:DiVA.org:ltu-3136DiVA: diva2:975992
Note

Validerad; 2015; Nivå 2; 20150127 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-10-19Bibliographically approved

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Nilsson, HansBehar, EtienneBarabash, Stas
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