Search Results - "Grandin, Maxime"
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Properties and Geoeffectiveness of Solar Wind High‐Speed Streams and Stream Interaction Regions During Solar Cycles 23 and 24
Published in Journal of geophysical research. Space physics (01-06-2019)“…We study the properties and geoeffectiveness of solar wind high‐speed streams (HSSs) emanating from coronal holes and associated with stream interaction…”
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Classification of Enhanced Geoeffectiveness Resulting from High-speed Solar Wind Streams Compressing Slower Interplanetary Coronal Mass Ejections
Published in Astrophysical journal. Letters (01-03-2024)“…High-speed solar wind streams (HSSs) interact with the preceding ambient solar wind to form stream interaction regions (SIRs), which are a primary source of…”
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Lower-thermosphere–ionosphere (LTI) quantities: current status of measuring techniques and models
Published in Annales geophysicae (1988) (25-02-2021)“…The lower-thermosphere–ionosphere (LTI) system consists of the upper atmosphere and the lower part of the ionosphere and as such comprises a complex system…”
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Non-locality of Earth's quasi-parallel bow shock: injection of thermal protons in a hybrid-Vlasov simulation
Published in Annales geophysicae (1988) (26-05-2020)“…We study the interaction of solar wind protons with Earth's quasi-parallel bow shock using a hybrid-Vlasov simulation. We employ the global hybrid model…”
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Hybrid-Vlasov simulation of auroral proton precipitation in the cusps: Comparison of northward and southward interplanetary magnetic field driving
Published in Journal of space weather and space climate (2020)“…Particle precipitation is a central aspect of space weather, as it strongly couples the magnetosphere and the ionosphere and can be responsible for radio…”
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First 3D hybrid-Vlasov global simulation of auroral proton precipitation and comparison with satellite observations
Published in Journal of space weather and space climate (2023)“…The precipitation of charged particles from the magnetosphere into the ionosphere is one of the crucial coupling mechanisms between these two regions of…”
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A global view of Pc3 wave activity in near-Earth space: Results from hybrid-Vlasov simulations
Published in Frontiers in astronomy and space sciences (29-09-2022)“…Ultra-low frequency (ULF) waves in the Pc3 range, with periods between 10–45 s, are routinely observed in Earth’s dayside magnetosphere. They are thought to…”
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Plasma-neutral interactions in the lower thermosphere-ionosphere: The need for in situ measurements to address focused questions
Published in Frontiers in astronomy and space sciences (30-01-2023)“…The lower thermosphere-ionosphere (LTI) is a key transition region between Earth’s atmosphere and space. Interactions between ions and neutrals maximize within…”
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Magnetospheric responses to solar wind Pc5 density fluctuations: Results from 2D hybrid Vlasov simulation
Published in Frontiers in astronomy and space sciences (02-09-2022)“…Ultra-low frequency (ULF) waves are routinely observed in Earth’s dayside magnetosphere. Here we investigate the influence of externally-driven density…”
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Large‐Scale Dune Aurora Event Investigation Combining Citizen Scientists' Photographs and Spacecraft Observations
Published in AGU advances (01-06-2021)“…Recently, citizen scientist photographs led to the discovery of a new auroral form called “the dune aurora” which exhibits parallel stripes of brighter…”
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Vlasov methods in space physics and astrophysics
Published in Living reviews in computational astrophysics (01-12-2018)“…This paper reviews Vlasov-based numerical methods used to model plasma in space physics and astrophysics. Plasma consists of collectively behaving charged…”
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Statistical comparison of electron precipitation during auroral breakups occurring either near the open–closed field line boundary or in the central part of the auroral oval
Published in Annales geophysicae (1988) (06-09-2024)“…Auroral electron precipitation during a substorm exhibits complex spatiotemporal variations which are still not fully understood, especially during the very…”
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Energy Flux Through the Magnetopause During Flux Transfer Events in Hybrid‐Vlasov 2D Simulations
Published in Geophysical research letters (16-10-2022)“…Solar wind—magnetosphere coupling drives magnetospheric dynamic phenomena by enabling energy exchange between magnetospheric and solar wind plasmas. In this…”
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Quasi‐Parallel Shock Reformation Seen by Magnetospheric Multiscale and Ion‐Kinetic Simulations
Published in Geophysical research letters (28-01-2022)“…Shock waves in collisionless plasmas are among the most efficient particle accelerators in space. Shock reformation is a process important to plasma heating…”
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Magnetotail plasma eruptions driven by magnetic reconnection and kinetic instabilities
Published in Nature geoscience (01-07-2023)“…Rapid plasma eruptions explosively release energy within Earth’s magnetosphere, at the Sun and at other planets. At Earth, these eruptions, termed plasmoids,…”
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Resolution dependence of magnetosheath waves in global hybrid-Vlasov simulations
Published in Annales geophysicae (1988) (21-12-2020)“…Kinetically driven plasma waves are fundamental for a description of the thermodynamical properties of the Earth's magnetosheath. The most commonly observed…”
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Magnetosheath jet evolution as a function of lifetime: global hybrid-Vlasov simulations compared to MMS observations
Published in Annales geophysicae (1988) (12-03-2021)“…Magnetosheath jets are regions of high dynamic pressure, which can traverse from the bow shock towards the magnetopause. Recent modelling efforts, limited to a…”
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Ion distribution functions in magnetotail reconnection: global hybrid-Vlasov simulation results
Published in Annales geophysicae (1988) (02-07-2021)“…We present results of noon–midnight meridional plane global hybrid-Vlasov simulations of the magnetotail ion dynamics under a steady southward interplanetary…”
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Foreshock cavitons and spontaneous hot flow anomalies: a statistical study with a global hybrid-Vlasov simulation
Published in Annales geophysicae (1988) (14-10-2021)“…The foreshock located upstream of Earth's bow shock hosts a wide variety of phenomena related to the reflection of solar wind particles from the bow shock and…”
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Asymmetries in the Earth's dayside magnetosheath: results from global hybrid-Vlasov simulations
Published in Annales geophysicae (1988) (06-10-2020)“…Bounded by the bow shock and the magnetopause, the magnetosheath forms the interface between solar wind and magnetospheric plasmas and regulates solar…”
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