Swarm absolute scalar magnetometer burst mode: observed ELF signals and their originsAdam J. Emsley, Ciaran D. Beggan, Aimee Callow, Kathryn A. Whaler, Pierdavide Coïsson, Louis Chauvet, Gauthier Hulot and Martin JennerJ. Space Weather Space Clim., 15 (2025) 37DOI: https://doi.org/10.1051/swsc/2025028