Articles | Volume 42, issue 2
https://doi.org/10.5194/angeo-42-355-2024
https://doi.org/10.5194/angeo-42-355-2024
Regular paper
 | 
06 Sep 2024
Regular paper |  | 06 Sep 2024

Statistical comparison of electron precipitation during auroral breakups occurring either near the open–closed field line boundary or in the central part of the auroral oval

Maxime Grandin, Noora Partamies, and Ilkka I. Virtanen

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Cited articles

Akasofu, S.-I.: The development of the auroral substorm, Planet. Space Sci., 12, 273–282, https://doi.org/10.1016/0032-0633(64)90151-5, 1964. a
Bilitza, D., Pezzopane, M., Truhlik, V., Altadill, D., Reinisch, B. W., and Pignalberi, A.: The International Reference Ionosphere Model: A Review and Description of an Ionospheric Benchmark, Rev. Geophys., 60, e2022RG000792, https://doi.org/10.1029/2022RG000792, 2022. a
Borovsky, J. and Yakymenko, K.: Substorm Occurrence Rates, Substorm Recurrence Times, and Solar Wind Structure, J. Geophys. Res.-Space, 122, 2973–2998, https://doi.org/10.1002/2016JA023625, 2017. a
Cresswell-Moorcock, K., Rodger, C. J., Kero, A., Collier, A. B., Clilverd, M. A., Häggström, I., and Pitkänen, T.: A reexamination of latitudinal limits of substorm-produced energetic electron precipitation, J. Geophys. Res.-Space, 118, 6694–6705, https://doi.org/10.1002/jgra.50598, 2013. a, b, c
EISCAT data: EISCAT, EISCAT Portal [data set], https://portal.eiscat.se/schedule/, last access: 2 September 2024. a
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Short summary
Auroral displays typically take place at high latitudes, but the exact latitude where the auroral breakup occurs can vary. In this study, we compare the characteristics of the fluxes of precipitating electrons from space during auroral breakups occurring above Tromsø (central part of the auroral zone) and above Svalbard (poleward boundary of the auroral zone). We find that electrons responsible for the aurora above Tromsø carry more energy than those precipitating above Svalbard.