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Auroral Imaging With Combined Suomi 100 Nanosatellite and Ground-Based Observations: A Case Study
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2023 (Engelska)Ingår i: Journal of Geophysical Research - Space Physics, ISSN 2169-9380, E-ISSN 2169-9402, Vol. 128, nr 5Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Auroras can be regarded as the most fascinating manifestation of space weather and they are continuously observed by ground-based and, nowadays more and more, also by space-based measurements. Investigations of auroras and geospace comprise the main research goals of the Suomi 100 nanosatellite, the first Finnish space research satellite, which has been measuring the Earth's ionosphere since its launch on 3 December 2018. In this work, we present a case study where the satellite's camera observations of an aurora over Northern Europe are combined with ground-based observations of the same event. The analyzed image is, to the authors' best knowledge, the first auroral image ever taken by a CubeSat. Our data analysis shows that a satellite vantage point provides complementary, novel information of such phenomena. The 3D auroral location reconstruction of the analyzed auroral event demonstrates how information from a 2D image can be used to provide location information of auroras under study. The location modeling also suggests that the Earth's limb direction, which was the case in the analyzed image, is an ideal direction to observe faint auroras. Although imaging on a small satellite has some large disadvantages compared with ground-based imaging (the camera cannot be repaired, a fast moving spinning satellite), the data analysis and modeling demonstrate how even a small 1-Unit (size: 10 × 10 × 10 cm) CubeSat and its camera, build using cheap commercial off-the-shelf components, can open new possibilities for auroral research, especially, when its measurements are combined with ground-based observations.

Ort, förlag, år, upplaga, sidor
John Wiley & Sons, Ltd , 2023. Vol. 128, nr 5
Nyckelord [en]
auroras, auroral imaging, camera instrument, all-sky camera, nanosatellite, CubeSat
Nationell ämneskategori
Fusion, plasma och rymdfysik
Identifikatorer
URN: urn:nbn:se:polar:diva-9066DOI: 10.1029/2023JA031414OAI: oai:DiVA.org:polar-9066DiVA, id: diva2:1820845
Tillgänglig från: 2023-12-19 Skapad: 2023-12-19 Senast uppdaterad: 2023-12-19Bibliografiskt granskad

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Förlagets fulltexthttps://doi.org/10.1029/2023JA031414
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Journal of Geophysical Research - Space Physics
Fusion, plasma och rymdfysik

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