2025

• Gasparini, Sara; Kepko, L.; Sorathia, K. A. et al. (2025). A New Approach to Data‐Model Comparisons: Using MAGE and Lompe to Unravel Ionosphere‐Magnetosphere Electrodynamics. (external link)
• Norgren, Astrid Elisabet Cecilia (2025). Ion Hall dynamics in symmetric magnetic reconnection. (external link)
• Norgren, Astrid Elisabet Cecilia (2025). The injection of ions into the exhaust by the Hall fields. (external link)
• Norgren, Astrid Elisabet Cecilia (2025). Plasma dynamics in the diffusion regions of magnetic reconnection. (external link)
• Norgren, Astrid Elisabet Cecilia; L.-J., Chen,; B., Graham, D. et al. (2025). Electron and Ion Dynamics in Reconnection Diffusion Regions. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Phan, T. et al. (2025). Phase-space contributions to pressure and stress tensors in the electron diffusion region of magnetic reconnection. (external link)
• Liu, Yi-Hsin; Hesse, Michael; Genestreti, Kevin et al. (2025). Ohm’s Law, the Reconnection Rate, and Energy Conversion in Collisionless Magnetic Reconnection. (external link)
• Graham, D.B.; Cozzani, G.; Khotyaintsev, Yu. V. et al. (2025). The Role of Kinetic Instabilities and Waves in Collisionless Magnetic Reconnection. (external link)

2024

• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Tenfjord, Paul Arne Riksheim et al. (2024). Dynamics of cold ions during magnetic reconnection. (external link)
• Norgren, Astrid Elisabet Cecilia; Julia, Dahlberg (2024). Onset and Evolution of Magnetic Reconnection in a Harris Plasma Current Sheet with Different Drift Velocities. (external link)

2023

• Norgren, Astrid Elisabet Cecilia (2023). The formation of the ion outflow inside the reconnection ion diffusion region. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Phan, Tai (2023). Particle dynamics associated with off-diagonal pressure components around the electron diffusion region of symmetric reconnection. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Phan, Tai et al. (2023). Intermittent (or unsteady) magnetic reconnection in the magnetotail. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Phan, Tai (2023). Reconnection cessation and onset in the terrestrial magnetotail. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Phan, Tai (2023). Kinetic physics of the electron diffusion region of magnetic reconnection. (external link)
• Baraka, Mohammed; Contel, Olivier Le; Alqeeq, Soboh et al. (2023). Study of a dayside magnetopause reconnection event detected by MMS related to a large-scale solar wind perturbation and magnetospheric cold ions. (external link)
• Borovsky, Joseph E.; Delzanno, Gian Luca; Kronberg, Elena A. et al. (2023). Editorial: Cold-ion populations and cold-electron populations in the Earth’s magnetosphere and their impact on the system. (external link)
• Liu, Huijie; Li, Wenya; Tang, Binbin et al. (2023). Statistics of the high-speed electron flows in the magnetotail. (external link)

2022

• Jimenez, Judit Perez-Coll; Tenfjord, Paul Arne Riksheim; Hesse, Michael et al. (2022). The Role of Resistivity on the Efficiency of Magnetic Reconnection in MHD. (external link)
• Hesse, Michael; Burch, James L; Norgren, Astrid Elisabet Cecilia et al. (2022). The electron diffusion region and its relation to the larger-scale environment. (external link)
• Norgren, Astrid Elisabet Cecilia (2022). Millisecond observations of nonlinear wave-electron interaction in electron phase space holes. (external link)
• Liu, Huijie; Li, Wenya; Tang, Binbin et al. (2022). Statistics of high-speed electron flows in the magnetotail. (external link)
• Hesse, Michael; Burch, James L; Liu, Yi-Hsin et al. (2022). Revisiting the Electron Diffusion Region in Asymmetric Guide-Field Reconnection. (external link)
• Graham, D.B.; Khotyaintsev, Yu. V.; André, M. et al. (2022). Direct observations of anomalous resistivity and diffusion in collisionless plasma. (external link)
• Graham, Daniel B.; Khotyaintsev, Yuri V.; André, Mats et al. (2022). Direct observations of anomalous resistivity and diffusion in magnetic reconnection. (external link)
• Hesse, Michael; Burch, James L; Liu, Yi-Hsin et al. (2022). What do we know about the reconnection electric field?. (external link)
• Norgren, Astrid Elisabet Cecilia; Graham, Daniel B.; Argall, Matthew et al. (2022). Millisecond observations of nonlinear wave–electron interaction in electron phase space holes. (external link)

2021

• Xu, Yin; Fu, Huishan; Cao, Jinbin et al. (2021). Electron-Scale Measurements of Antidipolarization Front. (external link)
• Kuniyoshi, Hidetaka; Hesse, Michael; Norgren, Astrid Elisabet Cecilia et al. (2021). Magnetic Reconnection in a Sheared Magnetic Flux Tube: Slippage Versus Tearing. (external link)
• Spinnangr, Susanne Flø; Hesse, Michael; Tenfjord, Paul Arne Riksheim et al. (2021). The Micro-Macro Coupling of Mass-Loading in Symmetric Magnetic Reconnection With Cold Ions. (external link)
• Hwang, K.-J.; Dokgo, K.; Choi, E. et al. (2021). Bifurcated Current Sheet Observed on the Boundary of Kelvin-Helmholtz Vortices. (external link)
• Tenfjord, Paul Arne Riksheim; Spinnangr, Susanne Flø; Norgren, Astrid Elisabet Cecilia et al. (2021). Modulating the reconnection efficiency by moments and field variability and various inflow characteristics. (external link)
• Jimenez, Judit Perez-Coll; Tenfjord, Paul Arne Riksheim; Hesse, Michael et al. (2021). The role of resistivity on the efficiency of magnetic reconnection in MHD. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Graham, Daniel B. et al. (2021). Electron acceleration and thermalization at magnetotail separatrices. (external link)
• Kolstø, Håkon Midthun; Norgren, Astrid Elisabet Cecilia; Hesse, Michael et al. (2021). MMS Observations of an Expanding Oxygen Density Wave in Magnetic Reconnection. (external link)
• Spinnangr, Susanne Flø; Tenfjord, Paul Arne Riksheim; Norgren, Astrid Elisabet Cecilia et al. (2021). Magnetic Reconnection During Varying Inflow Conditions. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Tenfjord, Paul Arne Riksheim et al. (2021). Acceleration and thermalization of cold ions within the reconnection exhaust. (external link)
• Li, Yu-Xuan; Li, Wen-Ya; Tang, Bin-Bin et al. (2021). Quantification of Cold-Ion Beams in a Magnetic Reconnection Jet. (external link)
• Spinnangr, Susanne Flø; Tenfjord, Paul Arne Riksheim; Hesse, Michael et al. (2021). Asymmetrically Varying Guide Field During Magnetic Reconnection: Particle-In-Cell Simulations. (external link)
• Toledo-Redondo, Sergio; Hwang, Kyoung-Joo; Escoubet, C. P. et al. (2021). Solar Wind—Magnetosphere Coupling During Radial Interplanetary Magnetic Field Conditions: Simultaneous Multi-Point Observations. (external link)
• Kolstø, Håkon Midthun; Norgren, Cecilia; Hesse, Michael et al. (2021). Magnetospheric Multiscale Observations of an Expanding Oxygen Wave in Magnetic Reconnection. (external link)
• Norgren, Astrid Elisabet Cecilia; Tenfjord, Paul Arne Riksheim; Hesse, Michael et al. (2021). On the Presence and Thermalization of Cold Ions in the Exhaust of Antiparallel Symmetric Reconnection. (external link)
• Li, Wenya; Khotyaintsev, Yuri V.; Tang, Bin-Bin et al. (2021). Upper-Hybrid Waves Driven by Meandering Electrons Around Magnetic Reconnection X Line. (external link)

2020

• Khotyaintsev, Yuri V.; Graham, Daniel B.; Steinvall, Konrad et al. (2020). Electron Heating by Debye-Scale Turbulence in Guide-Field Reconnection. (external link)
• Kwagala, Norah Kaggwa; Hesse, Michael; Moretto, Therese et al. (2020). Validating the Space Weather Modeling Framework (SWMF) for applications in northern Europe: Ground magnetic perturbation validation. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Graham, Daniel B. et al. (2020). Electron Acceleration and Thermalization at Magnetotail Separatrices. (external link)
• Li, Wenya; Graham, D. B.; Khotyaintsev, Yuri V. et al. (2020). Electron Bernstein waves driven by electron crescents near the electron diffusion region. (external link)
• Kwagala, Norah Kaggwa; Hesse, Michael; Jørgensen, Therese Moretto et al. (2020). Effect of selecting different simulation configurations on the prediction performance of the Space Weather Modeling Framework regarding ground magnetic perturbations. (external link)
• Haaland, Stein; Paschmann, Götz; Oieroset, M et al. (2020). Characteristics of the Flank Magnetopause: MMS Results. (external link)
• Kolstø, Håkon Midthun; Hesse, Michael; Norgren, Astrid Elisabet Cecilia et al. (2020). Collisionless Magnetic Reconnection in an Asymmetric Oxygen Density Configuration. (external link)
• Escoubet, C. P.; Hwang, KJ; Toledo-Redondo, Sergio et al. (2020). Cluster and MMS simultaneous observations of magnetosheath high speed jets and their impact on the magnetopause. (external link)
• Tenfjord, Paul; Hesse, Michael; Spinnangr, Susanne Flø et al. (2020). Electron and ion dynamics during closure of Hall current systems. (external link)
• Tenfjord, Paul; Hesse, Michael; Spinnangr, Susanne Flø et al. (2020). What can limit the effectiveness of magnetic reconnection?. (external link)
• Tenfjord, Paul; Hesse, Michael; Spinnangr, Susanne Flø et al. (2020). Cold proton-reconnection interaction. (external link)
• Kolstø, Håkon Midthun; Hesse, Michael; Norgren, Astrid Elisabet Cecilia et al. (2020). On the Impact of a Streaming Oxygen Population on Collisionless Magnetic Reconnection. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Tenfjord, Paul Arne Riksheim et al. (2020). Acceleration and thermalization of cold ions during magnetic reconnection. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Tenfjord, Paul Arne Riksheim et al. (2020). Cold ions inside the exhaust of antiparallel magnetic reconnection. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Tenfjord, Paul Arne Riksheim et al. (2020). Cold ions inside the exhaust of antiparallel magnetic reconnection. (external link)
• Kwagala, Norah Kaggwa; Moretto, Therese; Hesse, Michael et al. (2020). Quantitative Investigation of the Effect on Ground Magnetic Perturbations of IMF Bx. (external link)
• Tenfjord, Paul; Hesse, Michael; Norgren, Astrid Elisabet Cecilia et al. (2020). Interaction of Cold Streaming Protons with the Reconnection Process. (external link)
• Hesse, Michael; Norgren, Astrid Elisabet Cecilia; Tenfjord, Paul et al. (2020). A new Look at the Electron Diffusion Region in Asymmetric Magnetic Reconnection. (external link)

2019

• Khotyaintsev, Yuri V.; Graham, Daniel B.; Norgren, Astrid Elisabet Cecilia et al. (2019). Collisionless Magnetic Reconnection and Waves: Progress Review. (external link)
• Tenfjord, Paul; Hesse, Michael; Norgren, Astrid Elisabet Cecilia et al. (2019). The Impact of Oxygen on the Reconnection Rate. (external link)
• Shuster, JR; Gershman, Daniel J; Chen, LJ et al. (2019). MMS Measurements of the Vlasov Equation: Probing the Electron Pressure Divergence Within Thin Current Sheets. (external link)
• Kwagala, Norah Kaggwa; Hesse, Michael; Tenfjord, Paul et al. (2019). Validating the Space Weather Modeling Framework (SWMF) for applications in northern Europe: Ground magnetic perturbation validation. (external link)
• Kwagala, Norah Kaggwa; Hesse, Michael; Tenfjord, Paul et al. (2019). Validating the Space Weather Modeling Framework (SWMF) for applications in northern Europe: Ground magnetic perturbation validation. (external link)
• Hesse, M.; Norgren, Astrid Elisabet Cecilia; Tenfjord, Paul Arne Riksheim et al. (2019). Erratum: On the role of separatrix instabilities in heating the reconnection outflow region (Physics of Plasmas (2018) 25 (122902) DOI: 10.1063/1.5054100). (external link)
• Xu, Y; Fu, HS; Norgren, Astrid Elisabet Cecilia et al. (2019). Ionospheric Cold Ions Detected by MMS Behind Dipolarization Fronts. (external link)
• Graham, D. B.; Khotyaintsev, Yu V; Norgren, Astrid Elisabet Cecilia et al. (2019). Universality of Lower Hybrid Waves at Earth's Magnetopause. (external link)

2018

• Tenfjord, Paul; Hesse, Michael; Norgren, Astrid Elisabet Cecilia (2018). The formation of an oxygen wave by magnetic reconnection. (external link)
• Norgren, Astrid Elisabet Cecilia; Argall, Matthew; Hesse, Michael et al. (2018). Electron acceleration and thermalisation along magnetotail separatrices. (external link)
• Burch, James L; Paul, Cassak; Norgren, Astrid Elisabet Cecilia (2018). Magnetic Reconnection and NASA's Magnetospheric Multiscale (MMS) Mission. (external link)
• Norgren, Astrid Elisabet Cecilia; Lavraud, Benoit; Hesse, Michael (2018). Electron scattering at different guide fields. (external link)
• Norgren, Astrid Elisabet Cecilia; Graham, Daniel B.; Khotyaintsev, Yuri V. et al. (2018). Electron Reconnection in the Magnetopause Current Layer. (external link)
• Tenfjord, Paul; Hesse, Michael; Norgren, Astrid Elisabet Cecilia (2018). How Oxygen Influences the Reconnection Rate. (external link)
• Norgren, Astrid Elisabet Cecilia; Graham, Daniel B.; Khotyaintsev, Yuri V. et al. (2018). Electron reconnection in the magnetopause current layer. (external link)
• Norgren, Astrid Elisabet Cecilia; Graham, Daniel B.; Hesse, Michael et al. (2018). Electron acceleration and thermalisation along magnetotail separatrices. (external link)
• Norgren, Astrid Elisabet Cecilia; Graham, Daniel B.; André, Mats et al. (2018). Magnetopause fluxrope, electron rings, and whistler waves. (external link)
• Tenfjord, Paul; Hesse, Michael; Norgren, Astrid Elisabet Cecilia (2018). The influence of oxygen on the reconnection rate. (external link)
• Tenfjord, Paul; Hesse, Michael; Norgren, Astrid Elisabet Cecilia (2018). The formation of oxygen density striations in the diffusion region. (external link)
• Norgren, Astrid Elisabet Cecilia; Argall, Matthew; Graham, Daniel B. et al. (2018). Observation and modelling of electron trapping associated with electron phase space holes. (external link)
• Norgren, Astrid Elisabet Cecilia; Argall, Matthew; Graham, Daniel B. et al. (2018). Electron acceleration and thermalisation along magnetotail separatrices. (external link)
• Tenfjord, Paul; Hesse, Michael; Norgren, Astrid Elisabet Cecilia (2018). Formation of oxygen density striations. (external link)
• Norgren, Astrid Elisabet Cecilia; Hesse, Michael; Graham, Daniel B. et al. (2018). Electron acceleration and thermalisation along magnetotail separatrices. (external link)
• Norgren, Astrid Elisabet Cecilia; Graham, Daniel B.; Hesse, Michael et al. (2018). Separatrix wave activity prior to X-line passage: July 11, 2017. (external link)
• Hesse, Michael; Norgren, Astrid Elisabet Cecilia; Tenfjord, Paul et al. (2018). On the role of separatrix instabilities in heating the reconnection outflow region. (external link)
• Hesse, Michael; Liu, Yi-Hsin; Chen, Li-Jen et al. (2018). The physical foundation of the reconnection electric field. (external link)
• Xu, Y; Fu, HS; Norgren, Astrid Elisabet Cecilia et al. (2018). Formation of dipolarization fronts after current sheet thinning. (external link)

2017

• Tenfjord, Paul; Hesse, Michael; Norgren, Astrid Elisabet Cecilia (2017). Oxygen heating and acceleration. (external link)
• Tenfjord, Paul; Hesse, Michael; Norgren, Astrid Elisabet Cecilia (2017). The role of different ion species in magnetic reconnection: Formation of oxygen density striations. (external link)

See a complete overview of publications in Cristin.

Using a combination of fully kinetic particle-in-cell simulations and spacecraft observations with Cluster and the Magnetospheric MultiScale mission, my research focuses on the kinetic physics of thin boundaries and magnetic reconnection, plasma heating and acceleration, and wave-particle interaction in space plasma.