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From solar sneezing to killer electrons: outer radiation belt response to solar eruptions

Daglis, IA; Katsavrias, C; Georgiou, M; (2019) From solar sneezing to killer electrons: outer radiation belt response to solar eruptions. Philosophical Transactions A , 377 (2148) , Article 20180097. 10.1098/rsta.2018.0097. Green open access

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Abstract

Electrons in the outer Van Allen (radiation) belt occasionally reach relativistic energies, turning them into a potential hazard for spacecraft operating in geospace. Such electrons have secured the reputation of satellite killers and play a prominent role in space weather. The flux of these electrons can vary over time scales of years (related to the solar cycle) to minutes (related to sudden storm commencements). Electric fields and plasma waves are the main factors regulating the electron transport, acceleration and loss. Both the fields and the plasma waves are driven directly or indirectly by disturbances originating in the Sun, propagating through interplanetary space and impacting the Earth. This paper reviews our current understanding of the response of outer Van Allen belt electrons to solar eruptions and their interplanetary extensions, i.e. interplanetary coronal mass ejections and high-speed solar wind streams and the associated stream interaction regions.

Type: Article
Title: From solar sneezing to killer electrons: outer radiation belt response to solar eruptions
Open access status: An open access version is available from UCL Discovery
DOI: 10.1098/rsta.2018.0097
Publisher version: https://doi.org/10.1098/rsta.2018.0097
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: radiation belts, trapped particles, plasma waves, wave–particle interactions, coronal mass ejections, stream interaction regions
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/10087034
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