Paul Arne Riksheim Tenfjord
Researcher, Space Plasma Physics Group
- E-mailPaul.Tenfjord@uib.no
- Phone+47 55 58 27 14+47 934 58 461
- Visitor AddressAllégaten 55
- Postal AddressPostboks 78035020 BERGEN
Within the Space Plasma Physics Group, I study basic space plasma phenomena by means of analytical theory, and fluid- and particle-based numerical models. Research foci are the dynamics of magnetospheric, as well as solar and astrophysical plasmas, both on macro- and micro-scales. A special research focus is the kinetic physics of magnetic reconnection, which is investigated through comparisons of analytical and numerical model-based predictions with advanced spacecraft observations.
Academic article
- 2020. Validating the Space Weather Modeling Framework (SWMF) for applications in northern Europe: Ground magnetic perturbation validation. Journal of Space Weather and Space Climate. 13 pages.
- 2020. On the Impact of a Streaming Oxygen Population on Collisionless Magnetic Reconnection. Geophysical Research Letters.
- 2020. Interaction of Cold Streaming Protons with the Reconnection Process. Journal of Geophysical Research (JGR): Space Physics. 11 pages.
- 2020. High‐density magnetospheric He+ at the dayside magnetopause and its effect on magnetic reconnection . Journal of Geophysical Research (JGR): Space Physics. 12 pages.
- 2020. Electron Acceleration and Thermalization at Magnetotail Separatrices. Journal of Geophysical Research (JGR): Space Physics. 19 pages.
- 2020. Collisionless Magnetic Reconnection in an Asymmetric Oxygen Density Configuration. Geophysical Research Letters.
- 2020. Characteristics of the Flank Magnetopause: MMS Results . Journal of Geophysical Research (JGR): Space Physics.
- 2020. A new Look at the Electron Diffusion Region in Asymmetric Magnetic Reconnection. Journal of Geophysical Research (JGR): Space Physics. 16 pages.
- 2019. The Impact of Oxygen on the Reconnection Rate. Geophysical Research Letters. 6195-6203.
- 2019. Observations of asymmetric lobe convection for weak and strong tail activity. Journal of Geophysical Research (JGR): Space Physics. 9999-10017.
- 2019. Mass‐loading the Earth's dayside magnetopause boundary layer and its effect on magnetic reconnection. Geophysical Research Letters. 6204-6213.
- 2019. MMS observations of multiscale hall physics in the magnetotail. Geophysical Research Letters. 10230-10239.
- 2019. IMF By Influence on Magnetospheric Convection in Earth's Magnetotail Plasma Sheet . Geophysical Research Letters. 11698-11708.
- 2019. High‐density O+ in Earth's outer magnetosphere and its effect on dayside magnetopause magnetic reconnection. Journal of Geophysical Research (JGR): Space Physics. 10257-10269.
- 2018. Timescales of dayside and nightside field-aligned current response to changes in solar wind-magnetosphere coupling. Journal of Geophysical Research (JGR): Space Physics. 7307-7319.
- 2018. The physical foundation of the reconnection electric field. Physics of Plasmas. 1-7.
- 2018. The formation of an oxygen wave by magnetic reconnection . Journal of Geophysical Research (JGR): Space Physics. 9370-9380.
- 2018. The asymmetric geospace as displayed during the geomagnetic storm on 17 August 2001. Annales Geophysicae. 1577-1596.
- 2018. On the role of separatrix instabilities in heating the reconnection outflow region. Physics of Plasmas. 1-9.
- 2018. Observations of asymmetries in ionospheric return flow during different levels of geomagnetic activity. Journal of Geophysical Research (JGR): Space Physics. 4638-4651.
- 2018. Interplanetary Magnetic Field Bx Component Influence on Horizontal and Field-Aligned Currents in the Ionosphere. Journal of Geophysical Research (JGR): Space Physics. 3360-3379.
- 2018. How the IMF By Induces a Local By Component During Northward IMF Bz and Characteristic Timescales. Journal of Geophysical Research (JGR): Space Physics. 3333-3348.
- 2018. Evolution of Asymmetrically Displaced Footpoints During Substorms. Journal of Geophysical Research (JGR): Space Physics. 10,030-10,063.
- 2018. Estimating the Rate of Cessation of Magnetospheric Activity in AMPERE Field‐Aligned Currents. Geophysical Research Letters. 12713-12719.
- 2017. Overview of solar wind - magnetosphere - ionosphere - atmosphere coupling and the generation of magnetospheric currents. Space Science Reviews. 547-573.
- 2017. North-south asymmetries in cold plasma density in the magnetotail lobes: Cluster observations. Journal of Geophysical Research (JGR): Space Physics. 136-149.
- 2017. Dayside and nightside magnetic field responses at 780 km altitude to dayside reconnection. Journal of Geophysical Research (JGR): Space Physics. 1670-1689.
- 2016. The impact of sunlight on high-latitude equivalent currents. Journal of Geophysical Research (JGR): Space Physics. 2715-2726.
- 2016. Mechanisms that Produce Auroral Asymmetries in Conjugate Hemispheres. Geophysical Monograph.
- 2016. Magnetospheric response and reconfiguration times following IMF By reversals. Journal of Geophysical Research (JGR): Space Physics. 417-431.
- 2016. Dynamic effects of restoring footpoint symmetry on closed magnetic field lines. Journal of Geophysical Research (JGR): Space Physics. 3963-3977.
- 2015. How the IMF By induces a By component in the closed magnetosphere and how it leads to asymmetric currents and convection patternsin the two hemispheres. Journal of Geophysical Research (JGR): Space Physics. 9368-9384.
- 2015. Defining and resolving current systems in geospace. Annales Geophysicae. 1369-1402.
- 2015. Birkeland current effects on high-latitude ground magnetic field perturbations. Geophysical Research Letters. 7248-7254.
- 2014. Intensity asymmetries in the dusk sector of the poleward auroral oval due to IMF Bx. Journal of Geophysical Research (JGR): Space Physics. 9497-9507.
- 2014. Characteristics of the flank magnetopause: Cluster observations. Journal of Geophysical Research (JGR): Space Physics. 9019-9037.
- 2013. Energy transfer and flow in the solar wind-magnetosphere-ionosphere system: A new coupling function. Journal of Geophysical Research (JGR): Space Physics. 5659-5672.
Lecture
- 2014. Seasonal differences in ionospheric current rise and decay times.
Academic lecture
- 2021. Electron acceleration and thermalization at magnetotail separatrices.
- 2021. Acceleration and thermalization of cold ions within the reconnection exhaust.
- 2020. What can limit the effectiveness of magnetic reconnection?
- 2020. On the Micro-Macro Coupling of Mass-Loading in Magnetic Reconnection with Cold Ions.
- 2020. On the Micro-Macro Coupling of Mass-Loading in Magnetic Reconnection with Cold Ions.
- 2020. How does a cold proton population influence the reconnection process on different scales?
- 2020. Electron and ion dynamics during closure of Hall current systems.
- 2020. Cold proton-reconnection interaction.
- 2020. Cold ions inside the exhaust of antiparallel magnetic reconnection.
- 2020. Cold ions inside the exhaust of antiparallel magnetic reconnection.
- 2020. Acceleration and thermalization of cold ions during magnetic reconnection.
- 2019. Validating the Space Weather Modeling Framework (SWMF) for applications in northern Europe: Ground magnetic perturbation validation .
- 2019. Observations of Asymmetric Lobe Convection for Weak and Strong Tail Reconnection.
- 2019. How does the magnetosphere go to sleep?
- 2019. How asymmetries in Geospace evolve during increased tail reconnection.
- 2019. How Asymmetries in Geospace Evolve During Substorms.
- 2019. Cluster EDI Observations of the Asymmetric Plasma Convection in the Magnetotail Lobes During Different Levels of Tail Reconnection Rate .
- 2018. The influence of oxygen on the reconnection rate .
- 2018. Plasma circulation inside the polar cap and lobe reconnection.
- 2018. How well are interhemispheric asymmetries in ionospheric potential reproduced in global MHD models?
- 2018. How Oxygen Influences the Reconnection Rate.
- 2018. How Does the Magnetosphere go to Sleep?
- 2018. Formation of oxygen density striations.
- 2018. Electron acceleration and thermalisation along magnetotail separatrices.
- 2018. Electron acceleration and thermalisation along magnetotail separatrices.
- 2018. Electron acceleration and thermalisation along magnetotail separatrices.
- 2017. The role of nongyrotropy in balancing the reconnection diffusion region.
- 2017. The role of different ion species in the cessation of magnetic reconnection .
- 2017. The role of different ion species in magnetic reconnection: Formation of oxygen density striations.
- 2017. The influence of plasma flows bringing the magnetotail back to a more symmetric configuration.
- 2017. Seasonal and IMF-controlled variations in the large-scale true horizontal ionospheric current.
- 2017. Oxygen heating and acceleration.
- 2017. North-south asymmetries in polar ionospheric currents - effects of asymmetries in the main magnetic field.
- 2017. North-south asymmetries in lobe density: Cluster observations.
- 2017. North-South asymmetries in cold plasma density.
- 2017. How the IMF By induces a By-component on closed field lines during northward IMF Bz.
- 2017. Hemispherical differences in the Ionospheric current system as seen by Swarm and CHAMP.
- 2017. Estimating the Rate of Cessation of Magnetospheric Activity in AMPERE Currents.
- 2017. Does the Magnetosphere go to Sleep?
- 2017. Dayside and nightside magnetic field responses at 780 km altitude to dayside reconnection.
- 2017. Characterizing external influence on the large-scale polar ionospheric current system.
- 2015. Statistical maps of Birkeland currents from Swarm magnetometer measurements.
- 2015. On which timescales are By induced in the closed magnetosphere?
- 2015. Magnetic field patterns near the polar cap boundary.
- 2015. Generation of Birkeland Currents during IMF By; Mechanisms and theory.
- 2015. Effects of electric field component representation on estimated cross polar cap potential - Implications for interhemispheric asymmetries.
- 2015. Effects of electric field component representation on estimated cross polar cap potential - Implications for interhemispheric asymmetries.
- 2015. Are there auroral signatures related to asymmetric generation of field-aligned currents in the tail due to an IMF By induced twist?
- 2014. Hemispheric differences in solar wind – magnetosphere interactions.
- 2014. Dawn-dusk asymmetries in the magnetopause and ring current.
- 2014. Comparison of solar wind driving of the aurora in the two hemispheres due to the solar wind dynamo.
- 2014. Comparison of solar wind driving of the aurora in the two hemispheres due to solar wind dynamo.
- 2014. Asymmetric Solar Wind dynamo efficiency and IMF Bx.
- 2014. Are there detectable interhemispheric asymmetries in the field aligned currents, when IMF By is large? .
- 2013. What are the mechanisms that produce auroral asymmetries in the conjugate hemispheres?
- 2013. Investigation of the role of IMF Bx on magnetopause characteristic past the terminator.
- 2013. Investigation of a possible IMF Bx influence on magnetopause characteristics.
- 2013. Investigation of a possible IMF Bx influence on magnetopause characteristic.
- 2013. Inter-hemispheric currents in the ring current region.
- 2013. Intensity asymmetries between the northern and southern auroral ovals associated with the x-component of the Interplanetary Magnetic Field.
- 2013. Characteristics of the flank magnetopause - contributions from the Cluster mission.
Doctoral dissertation
- 2017. Solar wind energy transfer and the asymmetric geospace.
Poster
- 2020. Quantitative Investigation of the Effect on Ground Magnetic Perturbations of IMF Bx .
- 2019. Validating the Space Weather Modeling Framework (SWMF) for applications in northern Europe: Ground magnetic perturbation validation .
- 2019. Physics-based validation of global MHD models.
- 2018. The formation of oxygen density striations in the diffusion region.
- 2018. How the IMF BY induces a BY component on closed field lines during northward IMF Bz and characteristic timescales.
- 2018. Evolution of asymmetrically displaced footpoints during substorms.
- 2018. Electron reconnection in the magnetopause current layer.
- 2017. When and where is the process of restoring symmetry important?
- 2017. The asymmetric geospace - the most common state of the system.
- 2017. How the IMF By induces a By-component on closed field lines during northward IMF Bz.
- 2017. Evolution of asymmetrically displaced footpoints during substorms.
- 2017. Evolution of asymmetrically displaced footpoints during substorms.
- 2016. How the IMF By induces a By component on closed field lines during northward IMF Bz.
- 2016. Dynamic effects of restoring footpoint symmetry on closed magnetic field-lines: Asymmetric Birkeland currents.
- 2015. The Impact of IMF By on the Magnetosphere-Ionosphere System.
- 2015. Solar wind coupling times from the dayside to the nightside as observed by AMPERE.
- 2015. On the importance of magnetotail untwisting.
- 2015. On the importance of magnetotail untwist.
- 2014. Hemispheric asymmetries in the global aurora and IMF Bx.
- 2014. Generation of Field Aligned Currents during IMF By: Mechanisms and theory.
- 2013. Inter-hemispheric currents in the ring current region as seen by the Cluster spacecraft.
- 2013. Energy transfer and flow in the solar wind-magnetosphere-ionosphere system: A new coupling function.
- 2013. Energy transfer and flow in the solar wind-magnetosphere-ionosphere system: A new coupling function.
More information in national current research information system (CRIStin)
Fields of competence