Published in Journal of Geophysical Research - Space Physics, 2025
Shumko, M., Artemyev, A., Raptis, S., Zou, Y., Turner, D. L., Ukhorskiy, A. Y., et al. (2025). On the spatial relationship between the aurora and relativistic electron precipitation during a storm‐time substorm. Geophysical Research Letters, 52, e2025GL116477. https://doi.org/10.1029/2025GL116477
Published in Journal of Geophysical Research - Space Physics, 2025
Liu, T. Z., Angelopoulos, V., Dorfman, S., Hartinger, M. D., Zhang, K., Raptis, S., & Ma, D. (2025). Statistical relationship between foreshock ULF wave power and ground‐based Pc3‐4 wave power. Journal of Geophysical Research: Space Physics, 130, e2025JA033760. https://doi.org/10.1029/2025JA033760
Published in Journal of Geophysical Research - Space Physics, 2025
Lindberg, M., Shi, X., Hietala, H., Vuorinen, L., Raptis, S., Koller, F., & Lalti, A. (2025). Fermi acceleration of electrons at Earth’s bow shock due to current sheet interaction. Journal of Geophysical Research: Space Physics, 130, e2025JA034314. https://doi.org/10.1029/2025JA034314
Published in AGU Advances, 2025
Zhang, C., Dong, C., Liu, T. Z., Mazelle, C., Raptis, S., Zhou, H., et al. (2025). Role of ULF waves in reforming the Martian bow shock. AGU Advances, 6, e2025AV001654. https://doi.org/10.1029/ 2025AV001654
Published in Frontiers in Astronomy and Space Sciences, 2025
Toy-Edens, V., Mo, W., Allen, R.C., Vines, S.K., & Raptis, S. (2025) Automated classification of MESSENGER plasma observations via unsupervised transfer learning. Front. Astron. Space Sci. 12:1608091. doi: 10.3389/fspas.2025.1608091
Published in omputational Science – ICCS 2025. Lecture Notes in Computer Science, 2025
Ekelund, J., Raptis, S., Toy-Edens, V., Mo, W., Turner, D. L., Cohen, I. J., & Markidis, S. (2025). Adaptive PCA-Based Outlier Detection for Multi-feature Time Series in Space Missions. In: Lees, M.H., et al. Computational Science – ICCS 2025. ICCS 2025. Lecture Notes in Computer Science, vol 15903. Springer, Cham. https://doi.org/10.1007/978-3-031-97626-1_18
Published in Journal of Geophysical Research - Space Physics, 2025
Zou, Y., Walsh, B. M., Chen, Y., Zhou, H., & Raptis, S. (2025). Control of solar wind on magnetic field fluctuations in the subsolar magnetosheath. Journal of Geophysical Research: Space Physics, 130, e2025JA033856. https://doi.org/10. 1029/2025JA033856
Published in Geophysical Research Letters (GRL), 2025
Turc, L., Archer, M. O., Zhou, H., Pfau-Kempf, Y., Suni, J., Kajdiˇc, P., Blanco-Cano, X., Dahani, S., Battarbee, M., Raptis, S. , Liu, T. Z., Zhang, H., Escoubet, P. C., LaMoury, A. T., Tao, S., Lipsanen, V., Hao, Yufei., & Palmroth, M., (2025). Interplay between a foreshock bubble and a hot flow anomaly forming along the same rotational discontinuity. Geophysical Research Letters, 52, e2025GL116473. https://doi.org/10.1029/ 2025GL116473
Published in Journal of Geophysical Research - Space Physics, 2025
Ohtani, S., Zou, Y., Merkin, V. G., Wiltberger, M., Pham, K. H., Raptis, S., Friel, M., & Gjerloev, J. W., (2025). Ground magnetic response to an extraordinary IMF By flip during the May 2024 storm: Travel time from the magnetosheath to dayside high latitudes. Journal of Geophysical Research: Space Physics, 130, e2024JA033691. https://doi.org/10.1029/2024JA033691
Published in Frontiers in Astronomy and Space Sciences, 2025
Madanian, H., Pfau-Kemp, Y., Rachel, R., Liu, T. Z., Karlsson, T., Raptis, S., Turner, D.L. & Beedle, J. (2025). Sunward Flows in the Magnetosheath Associated with Magnetic Pressure Gradient and Magnetosheath. Front. Astron. Space Sci. - Space Physics, doi: 10.3389/fspas.2025.1574577
Published in Journal of Geophysical Research - Space Physics, 2025
Krämer, E., Hamrin, M., Gunell, H., Baddeley, L., Partamies, N., Raptis, S., Herlingshaw, K., & Schillings, A., (2025). Magnetosheath Jet-Triggered ULF Waves: Energy Deposition in the Ionosphere. Journal of Geophysical Research: Space Physics 130, e2025JA033792. https://doi.org/10.1029/ 2025JA033792
Published in The Astrophysical Journal Letters (ApJL), 2025
Raptis, S., Lindberg, M., Liu, T.Z., Turner, D.L., Lalti, A., Zhou, Y., Kajdič, P., Kouloumvakos, A., Sibeck, D.G., Vuorinen, L., Michael, A., Shumko, M., Osmane, A., Krämer, E., Turc, L., Karlsson, T., Katsavrias, C., Wilson III, L.B., Madanian, H., Blanco-Cano, X., Cohen, I.J., & Escoubet C.P., (2025). Multimission Observations of Relativistic Electrons and High-speed Jets Linked to Shock-generated Transients.The Astrophysical Journal Letters 981(1) L10, https://dx.doi.org/10.3847/2041-8213/adb154
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Published in Nature Communications, 2025
Raptis, S., Lalti, A., Lindberg, M., Turner, D. L., Caprioli, D., & Burch, J. L. (2025). Revealing an unexpectedly low electron injection threshold via reinforced shock acceleration. Nature Communications, 16(1), 488 https://doi.org/10.1038/s41467-024-55641-9
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Press Coverage: Northumbria University, phys.org, sciencedaily.com
Behind The Paper: Nature Portfolio
Published in Space Science Reviews, 2024
Krämer, E., Koller, F., Suni, J., LaMoury T. A., Pöppelwerth, A., Glebe, G., Mohammed-Amin, T., Raptis, S. , Vuorinen, L., Weiss, S., Xirogiannopoulou, N., Archer, M., Bianco-Cano, X., Gunell. H., Hietala, H., Karlsson, T., Plaschke, F., Preisser, L., Roberts, O., Wedlund, S. C., Temmer, M., & Vörös , Z. (2025). ts Downstream of Collisionless Shocks: Recent Discoveries and Challenges. Space Science Reviews, 221(1), 1-59
Published in The Astrophysical Journal (ApJ), 2024
Osmane, A., & Raptis, S. (2024). On the formation of super-Alfvénic flows downstream of collisionless shocks. The Astrophysical Journal, 976(1), 104.
Published in Geophysical Research Letters (GRL), 2024
Raptis, S. , Merkin, V., Ohtani, S., Gkioulidou, M., & Regoli, L. H. (2024). Plasma sheet magnetic flux transport during geomagnetic storms. Geophysical Research Letters, 51, e2024GL110839. https://doi.org/10.1029/2024GL110839
MMS highlighted summary : MMS highlighted summary
Published in Frontiers in Astronomy and Space Sciences, 2024
Kajdič, P., Blanco-Cano, X., Turc, L., Archer, M., Raptis, S., Liu, TZ., Pfau-Kempf, Y., LaMoury, AT., Hao, Y., Escoubet, PC., Omidi, N., Sibeck, DG., Wang, B., Zhang, H., and Lin, Y. (2024) Transient upstream mesoscale structures: drivers of solar-quiet space weather. Front. Astron. Space Sci. 11:1436916. doi: 10.3389/fspas.2024.1436916
Published in Journal of Geophysical Research - Space Physics, 2024
Toy-Edens, V., Mo, W., Raptis, S., & Turner, D. L. (2024). Classifying 8 years of MMS dayside plasma regions via unsupervised machine learning. Journal of Geophysical Research: Space Physics, 129, e2024JA032431. https://doi.org/10.1029/2024JA032431
Published in Journal of Geophysical Research - Space Physics, 2024
Regoli, L. H., Gkioulidou, M., Ohtani, S., Raptis, S., Mouikis, C. G., Kistler, L. M., et al. (2024). Temporal evolution of O+ population in the near-Earth plasma sheet during geomagnetic storms as observed by the magnetospheric multiscale mission. Journal of Geophysical Research: Space Physics, 129, e2023JA032203. https://doi.org/10.1029/2023JA032203
Published in The Astrophysical Journal Letters (ApJL), 2024
Koller, F., Raptis, S., Temmer, M., & Karlsson, T. (2024). The Effect of Fast Solar Wind on Ion Distribution Downstream of Earth's Bow Shock. The Astrophysical Journal Letters 954(1) L5, https://dx.doi.org/10.3847/2041-8213/ad2ddf
Published in Geophysical Research Letters (GRL), 2024
Lindberg, M., Vaivads, A., Amano, T., Raptis, S. , & Joshi, S. (2024). Electron Acceleration at Earth's Bow Shock Due to Stochastic Shock Drift Acceleration Geophysical Research Letters, 51, e2023GL106612. https://doi.org/10.1029/2023GL106612
Published in Nature Communications, 2024
Zhou, Y., Raptis, S. , Wang, S., Shen, C., Ren., N., & Ma, L. (2024). Magnetosheath jets at Jupiter and across the solar system. Nature Communications., 15, 4, https://doi.org/10.1038/s41467-023-43942-4
Press Coverage: phys.org, Astronomy Magazine
Published in Geophysical Research Letters (GRL), 2023
Collinson, G., Hietala, H., Plaschke, F., Karlsson, T., Wilson, B. L., Archer, M., Battarbee, M., Bianco-Cano, X., Bertucci, C., Long, D., Opher, M., Sergis, N., Gasque, C., Liu, T., Raptis, S., Burne, S., Frahm, R., Zhang, T., & Futaana, Y. (2023). Shocklets and Short Large Amplitude Magnetic Structures (SLAMS) in the high Mach foreshock of Venus. Geophysical Research Letters, 50, e2023GL104610, https://doi.org/10.1029/2023GL104610
Published in Annales Geophysicae (ANGEO), 2023
Trollvik, H., Karlsson, T., Raptis, S. (2023). Velocity of magnetic holes in the solar wind from Cluster multipoint measurements. Ann. Geophys., 41, 327–337, https://doi.org/10.5194/angeo-41-327-2023
Published in Geophysical Research Letters (GRL), 2023
Lindberg, M., Vaivads, A., Raptis, S., & Karlsson, T. (2023). MMS observation of two-step electron acceleration at Earth’s bow shock. Geophysical Research Letters, 50, e2023GL104714. https://doi.org/10.1029/2023GL104714
Published in Annales Geophysicae (ANGEO), 2022
Karlsson, T., Trollvik, H., Raptis, S., Nilsson, H., & Madanian, H. (2022). Solar wind magnetic holes can cross the bow shock and enter the magnetosheath. Ann. Geophys., 40, 687–699, doi:10.5194/angeo-40-687-2022
Published in Physics of Plasmas, 2022
Pollock, C., Chen, L-J., Schwartz, S., Wang, S., Avanov, L. A., Burch, J. L., Gershman, D. J., Giles, B. L., Raptis, S., & Russell, C. T. (2022). Dynamics of Earth’s bow shock under near-radial interplanetary magnetic field conditions, Physics of Plasmas 29, 112902 (2022) https://doi.org/10.1063/5.0089937
Published in Geophysical Research Letters (GRL), 2022
Raptis, S., Karlsson, T., Vaivads, A., Lindberg, M., Johlander, A., & Trollvik, H. (2022). On magnetosheath jet kinetic structure and plasma properties. Geophysical Research Letters, 49, e2022GL100678. https://doi.org/10.1029/2022GL100678
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Published in Entropy, 2022
Lindberg, M., Vaivads, A., Raptis, S., Lindqvist, P.-A., Giles, B. L., & Gershman, D. J. (2021). Electron kinetic entropy across quasi-perpendicular shocks. Entropy 24, 745. https://doi.org/10.3390/e24060745
Published in Nature Communications, 2022
Raptis, S., Karlsson, T., Vaivads, A., Pollock, C., Plaschke, F., Johlander, A., Trollvik, H., & Lindqvist, P.-A. (2022). Downstream high-speed plasma jet generation as a direct consequence of shock reformation. Nature Communications. 13, 598 https://doi.org/10.1038/s41467-022-28110-4
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Press Coverage: KTH, phys.org, spacedaily.com
Behind The Paper: Nature Portfolio
Published in Journal of Space Weather and Space Climate (JSWSC), 2021
Sigiava, A-G., Raptis, S., Anastasiadis, A. A., Tsigkanos, A., Sandberg, I., Papaioannou, A., Papadimitrioy, C., Jiggens, P., Aran, A., & Daglis, I.A. (2021). Solar Energetic Particle Event occurrence prediction using Solar Flare Soft X-ray measurements with Machine Learning. Journal of Space Weather and Space Climate (2021) doi: 10.1051/swsc/2021043
Published in Journal of Geophysical Research - Space Physics, 2021
Karlsson, T., Raptis, S., Trollvik, H., & Nilsson, H. (2021). Classifying the magnetosheath behind the quasi-parallel and quasi-perpendicular bow shock by local measurements. Journal of Geophysical Research: Space Physics, 126, e2021JA029269. https://doi.org/10.1029/2021JA029269
Published in Geophysical Research Letters (GRL), 2021
Katsavrias, C., Raptis, S., Daglis, I. A., Karlsson, T., Georgiou, M., & Balasis, G. (2021). On the generation of Pi2 pulsations due to plasma flow patterns around magnetosheath jets. Geophysical Research Letters, 48, e2021GL093611. doi:10.1029/2021GL093611
Published in Geophysical Research Letters (GRL), 2021
Kajdič, P., Raptis, S., Blanco-Cano, X., & Karlsson, T. (2021). Causes of jets in the quasi-perpendicular magnetosheath. Geophysical Research Letters, 48, e2021GL093173. doi:10.1029/2021GL093173
Published in Annales Geophysicae (ANGEO), 2021
Palmroth, M., Raptis, S., Suni, J., Karlsson, T., Turc, L., Johlander, A., Ganse, U., Pfau-Kempf, Y., Blanco-Cano, X., Akhavan-Tafti, M., Battarbee, M., Dubart, M., Grandin, M., Tarvus, V., & Osmane, A. (2021). Magnetosheath jet evolution as a function of lifetime: global hybrid-Vlasov simulations compared to MMS observations, Ann. Geophys., 39, 289–308, doi:10.5194/angeo-39-289-2021
Published in Annales Geophysicae (ANGEO), 2020
Battarbee, M., Blanco-Cano, X., Turc, L., Kajdič, P., Johlander, A., Tarvus, V., Fuselier, S., Trattner, K., Alho, M., Brito, T., Ganse, U., Pfau-Kempf, Y., Akhavan-Tafti, M., Karlsson, T., Raptis, S., Dubart, M., Grandin, M., Suni, J., and Palmroth, M. (2020). Helium in the Earth's foreshock: a global Vlasiator survey, Ann. Geophys., 38, 1081–1099, doi:10.5194/angeo-38-1081-2020
Published in Journal of Geophysical Research - Space Physics, 2020
Raptis, S., Karlsson, T., Plaschke, F., Kullen, A., & Lindqvist, P.-A. (2020). Classifying magnetosheath jets using MMS: Statistical properties. Journal of Geophysical Research: Space Physics, 125, e2019JA027754. doi:10.1029/2019JA027754
Published in Frontiers in Astronomy and Space Sciences, 2020
Raptis. S., Aminalragia-Giamini. S., Karlsson. T., & Lindberg. M. (2020) Classification of Magnetosheath Jets Using Neural Networks and High Resolution OMNI (HRO) Data. Front. Astron. Space Sci. 7:24. doi: 10.3389/fspas.2020.00024
Editorial E-book : Research Topic: Machine Learning in Heliophysics
Published in Frontiers in Astronomy and Space Sciences, 2020
Yordanova, E., Vörös, Z., Raptis, S. & Karlsson, T. (2020). Current Sheet Statistics in the Magnetosheath. Front. Astron. Space Sci. 7:2. doi: 10.3389/fspas.2020.00002
Editorial E-book : Research Topic: Improving the Understanding of Kinetic Processes in Solar Wind and Magnetosphere: From CLUSTER to MMS