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Zhu, Qingyu (author), Lu, Gang (author), Lei, Jiuhou (author), Deng, Yue (author), Doornbos, E.N. (author), van den IJssel, J.A.A. (author), Siemes, C. (author)The thermospheric neutral density response to the 7–9 September 2017 storms is investigated based on the Swarm satellite observations and the thermosphere-ionosphere-electrodynamic general circulation model (TIEGCM) simulation. The Swarm data depicted a prominent interhemispheric asymmetry (IHA) in the afternoon sector during the second storm...journal article 2023
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He, Jianhui (author), Astafyeva, Elvira (author), Yue, Xinan (author), Pedatella, Nicholas M. (author), Lin, Dong (author), Fuller-Rowell, Timothy J. (author), Fedrizzi, Mariangel (author), Doornbos, E.N. (author), Siemes, C. (author)On 3 February 2022, at 18:13 UTC, SpaceX launched and a short time later deployed 49 Starlink satellites at an orbit altitude between 210 and 320 km. The satellites were meant to be further raised to 550 km. However, the deployment took place during the main phase of a moderate geomagnetic storm, and another moderate storm occurred on the...journal article 2023
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Siemes, C. (author), De Teixeira Da Encarnação, J. (author), Doornbos, E.N. (author), van den IJssel, J.A.A. (author), Kraus, Jiří (author), Pereštý, Radek (author), Grunwaldt, Ludwig (author), Apelbaum, Guy (author), Flury, Jakob (author), Holmdahl Olsen, Poul Erik (author)The Swarm satellites were launched on November 22, 2013, and carry accelerometers and GPS receivers as part of their scientific payload. The GPS receivers do not only provide the position and time for the magnetic field measurements, but are also used for determining non-gravitational forces like drag and radiation pressure acting on the...journal article 2016