Annales Geophysicae
Annales Geophysicae
Annales Geophysicae
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https://doi.org/10.5194/angeo-2019-162
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-2019-162
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Preprints
 
02 Jan 2020
02 Jan 2020
Status: this preprint has been withdrawn by the authors.

Inferring the source regions of pulsating auroras

Eric Grono and Eric Donovan Eric Grono and Eric Donovan
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  • Department of Physics and Astronomy, University of Calgary, Calgary, Alberta, Canada
Received: 06 Dec 2019 – Discussion started: 02 Jan 2020

Abstract. The aurora is an essential tool for remote sensing the large-scale dynamics of the magnetosphere which are to difficult to observe in situ and impossible to recreate in a lab. Despite pulsating aurora being a common and widespread morning-sector phenomenon, the processes responsible for its differentiation are not understood. In situ measurements of the pulsating aurora source regions are difficult to associate with specific auroral features, yet such observations will be necessary for identifying the unique causes of pulsating auroras. This study reports a method of inferring when a spacecraft is passing through the source region of patchy aurora (PA) based on the structuring of chorus. The locations of longer-lived chorus packets are found to correspond to the region of PA occurrence reported by Grono et al. (2019b). This result constrains the region where the structuring mechanisms and conditions responsible for PA and patchy pulsating aurora (PPA) can exist.

This preprint has been withdrawn.
How to cite. Grono, E. and Donovan, E.: Inferring the source regions of pulsating auroras, Ann. Geophys. Discuss. [preprint], https://doi.org/10.5194/angeo-2019-162, 2020.

Eric Grono and Eric Donovan

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Eric Grono and Eric Donovan

Data sets

Replication Data for: Inferring the source regions of pulsating aurora E. Grono https://doi.org/10.5683/SP2/FRR34B

Eric Grono and Eric Donovan

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Short summary
Pulsating auroras have recently begun to be reconsidered in the context of the conditions and mechanisms driving them. This research connects one type of pulsating aurora to specific plasma waves and uses in situ plasma observations to infer the source region of this aurora. Shortcomings of the available methods of associating in situ observations with specific auroral features are outlined and a key issue is identified which challenges our understanding of pulsating aurora formation.
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