Aurora in the polar cap: a review
Aurora in the polar cap: a review
This paper reviews our current understanding of auroral features that appear poleward of the main auroral oval within the polar cap, especially those that are known as Sun-aligned arcs, transpolar arcs, or theta auroras. They tend to appear predominantly during periods of quiet geomagnetic activity or northwards directed interplanetary magnetic field (IMF). We also introduce polar rain aurora which has been considered as a phenomenon on open field lines. We describe the morphology of such auroras, their development and dynamics in response to solar wind-magnetosphere coupling processes, and the models that have been developed to explain them.
Ionospheric convection, Magnetosphere, Polar cap aurora, Polar rain aurora, Reconnection, Sun-aligned arc, Transpolar arc
Hosokawa, Keisuke
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Kullen, Anita
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Milan, Steve
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Reidy, Jade
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Zou, Ying
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Frey, Harald U.
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Maggiolo, Romain
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Fear, Robert
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5 February 2020
Hosokawa, Keisuke
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Kullen, Anita
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Milan, Steve
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Reidy, Jade
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Zou, Ying
dbdc97ed-e5bc-4c9d-a866-5351a38e1ad0
Frey, Harald U.
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Maggiolo, Romain
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Fear, Robert
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Hosokawa, Keisuke, Kullen, Anita, Milan, Steve, Reidy, Jade, Zou, Ying, Frey, Harald U., Maggiolo, Romain and Fear, Robert
(2020)
Aurora in the polar cap: a review.
Space Science Reviews, 216 (1), [15].
(doi:10.1007/s11214-020-0637-3).
Abstract
This paper reviews our current understanding of auroral features that appear poleward of the main auroral oval within the polar cap, especially those that are known as Sun-aligned arcs, transpolar arcs, or theta auroras. They tend to appear predominantly during periods of quiet geomagnetic activity or northwards directed interplanetary magnetic field (IMF). We also introduce polar rain aurora which has been considered as a phenomenon on open field lines. We describe the morphology of such auroras, their development and dynamics in response to solar wind-magnetosphere coupling processes, and the models that have been developed to explain them.
Text
s11214-020-0637-3
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More information
Accepted/In Press date: 23 January 2020
Published date: 5 February 2020
Keywords:
Ionospheric convection, Magnetosphere, Polar cap aurora, Polar rain aurora, Reconnection, Sun-aligned arc, Transpolar arc
Identifiers
Local EPrints ID: 491559
URI: http://eprints.soton.ac.uk/id/eprint/491559
ISSN: 0038-6308
PURE UUID: 29c414ba-8fc8-46bc-932a-4275319d80a3
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Date deposited: 26 Jun 2024 16:31
Last modified: 27 Jun 2024 01:45
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Contributors
Author:
Keisuke Hosokawa
Author:
Anita Kullen
Author:
Steve Milan
Author:
Jade Reidy
Author:
Ying Zou
Author:
Harald U. Frey
Author:
Romain Maggiolo
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