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  Electrostatic lofting of dust grains from the surfaces of Thebe and Amalthea

Borisov, N., & Krüger, H. (2020). Electrostatic lofting of dust grains from the surfaces of Thebe and Amalthea. Planetary and Space Science, 183: 104556. doi:10.1016/j.pss.2018.06.005.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-DB23-D Version Permalink: http://hdl.handle.net/21.11116/0000-0005-DB24-C
Genre: Journal Article

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 Creators:
Borisov, N.1, Author              
Krüger, Harald2, Author              
Affiliations:
1MPS General, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832292              
2Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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Free keywords: Electrostatic dust levitation Jupiter gossamer rings Amalthea Thebe
 Abstract: Energetic electrons from the inner radiation belt provide significant electric charging of the surfaces of Jupiter's moons Thebe and Amalthea whose orbits are located within this radiation belt. We estimate theoretically the electric fields in the vicinity of the polar regions of Thebe and Amalthea and argue that these fields are sufficient for lofting of micron and submicron-sized dust grains from the surfaces of the moons. Thus, the lofting of charged dust grains in the electric fields can be considered as an additional source supplying dust to the gossamer rings in addition to dust ejection by micrometeoroid impacts onto the moons' surfaces. The suggested mechanism can explain qualitatively some peculiarities of the dust grain distributions within the gossamer rings.

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Language(s): eng - English
 Dates: 20182020
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.pss.2018.06.005
 Degree: -

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Title: Planetary and Space Science
Source Genre: Journal
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Affiliations:
Publ. Info: Amsterdam : Elsevier B.V.
Pages: - Volume / Issue: 183 Sequence Number: 104556 Start / End Page: - Identifier: ISSN: 0032-0633
CoNE: https://pure.mpg.de/cone/journals/resource/954925434422