Adnane Osmane
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View article: Exploring complexity measures for analysis of solar wind structures and streams
Exploring complexity measures for analysis of solar wind structures and streams Open
In this paper, we use statistical complexity and information theory metrics to study structure within solar wind time series. We explore this using entropy–complexity and information planes, where the measure for entropy is formed using ei…
View article: Phase-Space Synchronization Driven by Moon-Magnetosphere Coupling in Gas Giants
Phase-Space Synchronization Driven by Moon-Magnetosphere Coupling in Gas Giants Open
We present a new theoretical framework to describe the rapid and spatially localized loss of energetic particles in planetary radiation belts, focusing on interactions between gas giant magnetospheres and their moons. Observations show tha…
View article: Satellite impact of Carrington-level geomagnetic storm particle fluxes and fluences
Satellite impact of Carrington-level geomagnetic storm particle fluxes and fluences Open
The estimated recurrence rates of the most extreme space weather events, like the Carrington event of 1859, warrant investigations of their potential impact on modern satellite-based infrastructure. Our study is based on Extreme Value Theo…
View article: Radial Diffusion Driven by Spatially Localized ULF Waves in the Earth's Magnetosphere
Radial Diffusion Driven by Spatially Localized ULF Waves in the Earth's Magnetosphere Open
Ultra‐Low Frequency (ULF) waves are critical drivers of particle acceleration and loss in the Earth's magnetosphere. While statistical models of ULF‐induced radial transport have traditionally assumed that the waves are uniformly distribut…
View article: Multimission Observations of Relativistic Electrons and High-speed Jets Linked to Shock-generated Transients
Multimission Observations of Relativistic Electrons and High-speed Jets Linked to Shock-generated Transients Open
Shock-generated transients, such as hot flow anomalies (HFAs), upstream of planetary bow shocks, play a critical role in electron acceleration. Using multimission data from NASA’s Magnetospheric Multiscale and ESA’s Cluster missions, we de…
View article: Exploring Complexity Measures for Analysis of Solar Wind Structures and Streams
Exploring Complexity Measures for Analysis of Solar Wind Structures and Streams Open
In this paper we use statistical complexity and information theory metrics to study structure within solar wind time series. We explore this using entropy-complexity and information planes, where the measure for entropy is formed using eit…
View article: Multi-Mission Observations of Relativistic Electrons and High-Speed Jets Linked to Shock Generated Transients
Multi-Mission Observations of Relativistic Electrons and High-Speed Jets Linked to Shock Generated Transients Open
Shock-generated transients, such as hot flow anomalies (HFAs), upstream of planetary bow shocks, play a critical role in electron acceleration. Using multi-mission data from NASA's Magnetospheric Multiscale (MMS) and ESA's Cluster missions…
View article: On the Formation of Super-Alfvénic Flows Downstream of Collisionless Shocks
On the Formation of Super-Alfvénic Flows Downstream of Collisionless Shocks Open
Super-Alfvénic jets, with kinetic energy densities significantly exceeding that of the solar wind, are commonly generated downstream of Earth's bow shock under both high- and low-beta plasma conditions. In this study, we present theoretica…
View article: Radial Diffusion Driven by Spatially Localized ULF Waves in the Earth's Magnetosphere
Radial Diffusion Driven by Spatially Localized ULF Waves in the Earth's Magnetosphere Open
Ultra-Low Frequency (ULF) waves are critical drivers of particle acceleration and loss in the Earth's magnetosphere. While statistical models of ULF-induced radial transport have traditionally assumed that the waves are uniformly distribut…
View article: On the Formation of Super-Alfvénic Flows Downstream of Collisionless Shocks
On the Formation of Super-Alfvénic Flows Downstream of Collisionless Shocks Open
Super-Alfvénic jets, with kinetic energy densities significantly exceeding that of the solar wind, are commonly generated downstream of Earth's bow shock under both high and low beta plasma conditions. In this study, we present theoretical…
View article: Permutation entropy and complexity analysis of large-scale solar wind structures and streams
Permutation entropy and complexity analysis of large-scale solar wind structures and streams Open
In this work, we perform a statistical study of magnetic field fluctuations in the solar wind at 1 au using permutation entropy and complexity analysis and the investigation of the temporal variations of the Hurst exponents. Slow and fast …
View article: Impact of solar cycle on the non-linearity of the relationship between the solar wind parameters and geomagnetic conditions
Impact of solar cycle on the non-linearity of the relationship between the solar wind parameters and geomagnetic conditions Open
Solar wind and its transients drive the dynamics of Earth’s magnetosphere. Interplanetary coronal mass ejections (ICMEs) induce the largest variations in the near-Earth space, but significant geomagnetic activity can also be driven by high…
View article: Permutation Entropy and Complexity Analysis of Large-scale Solar Wind Structures and Streams
Permutation Entropy and Complexity Analysis of Large-scale Solar Wind Structures and Streams Open
In this work, we perform a statistical study of magnetic field fluctuations in the solar wind at 1 au using permutation entropy and complexity analysis, and the investigation of the temporal variations of the Hurst exponents. Slow and fast…
View article: The challenge to understand the zoo of particle transport regimes during resonant wave-particle interactions for given survey-mode wave spectra
The challenge to understand the zoo of particle transport regimes during resonant wave-particle interactions for given survey-mode wave spectra Open
Quasilinear theories have been shown to well describe a range of transport phenomena in magnetospheric, space, astrophysical and laboratory plasma “weak turbulence” scenarios. It is well known that the resonant diffusion quasilinear theory…
View article: Estimation of extreme electron fluxes at geostationary orbit: a statistical and a physical approach
Estimation of extreme electron fluxes at geostationary orbit: a statistical and a physical approach Open
The outer Van Allen belt is home to relativistic electrons and experience large variations in electron fluxes during geomagnetic driving events. Many satellite orbits, especially geostationary ones, overlap with the radiation belts and exp…
View article: Wave storms in the Earth's magnetosphere
Wave storms in the Earth's magnetosphere Open
Ultra-low frequency (ULF) waves permeate near-Earth space and play a key role in the transfer of electromagnetic energy from the solar wind to the magnetosphere. These waves contribute to magnetosphere-ionosphere coupling, and are central …
View article: Turbulent structure of CME-driven sheath regions and their role as energizing charged particles in interplanetary space
Turbulent structure of CME-driven sheath regions and their role as energizing charged particles in interplanetary space Open
Fast Coronal Mass Ejections (CMEs) gather compressed and heated solar wind ahead of them to for turbulent sheath regions. In this presentation we will first demonstrate with recent examples (using e.g. Parker Solar Probe and Solar Orbiter …
View article: The spatial localisation of storm-time ULF waves due to plasmaspheric plumes and implications for calculating radial diffusion
The spatial localisation of storm-time ULF waves due to plasmaspheric plumes and implications for calculating radial diffusion Open
The generation and propagation of Ultra Low Frequency (ULF) waves are intrinsically coupled to the cold plasma population in the terrestrial magnetosphere. During geomagnetic storms, extreme reconfigurations of the cold plasma creates a co…
View article: Comment on egusphere-2023-2352
Comment on egusphere-2023-2352 Open
Abstract. In this work, we perform a statistical study of magnetic field fluctuations in the solar wind at 1 au using permutation entropy and complexity analysis. Slow and fast wind, magnetic clouds, interplanetary coronal mass ejection (I…
View article: Comment on egusphere-2023-2352
Comment on egusphere-2023-2352 Open
Abstract. In this work, we perform a statistical study of magnetic field fluctuations in the solar wind at 1 au using permutation entropy and complexity analysis. Slow and fast wind, magnetic clouds, interplanetary coronal mass ejection (I…
View article: Parametrization of coefficients for sub-grid modeling of pitch-angle diffusion in global magnetospheric hybrid-Vlasov simulations
Parametrization of coefficients for sub-grid modeling of pitch-angle diffusion in global magnetospheric hybrid-Vlasov simulations Open
Sub-grid models are key tools to accurately describe the physical processes at play in a system when high-resolution simulations are not feasible. We previously developed a sub-grid model for pitch-angle diffusion in hybrid-Vlasov simulati…
View article: Radial Transport in the Earth’s Radiation Belts: Linear, Quasi-linear, and Higher-order Processes
Radial Transport in the Earth’s Radiation Belts: Linear, Quasi-linear, and Higher-order Processes Open
Observational studies of the Earth’s radiation belts indicate that Alfvénic fluctuations in the frequency range of 2–25 mHz accelerate electrons to relativistic energies. For decades, statistical models of radiation belts have quantified t…
View article: Permutation Entropy and Complexity Analysis of Large-scale Solar Wind Structures and Streams
Permutation Entropy and Complexity Analysis of Large-scale Solar Wind Structures and Streams Open
In this work, we perform a statistical study of magnetic field fluctuations in the solar wind at 1 au using permutation entropy and complexity analysis. Slow and fast wind, magnetic clouds, interplanetary coronal mass ejection (ICME)-drive…
View article: Foresail-2: Space Physics Mission in a Challenging Environment
Foresail-2: Space Physics Mission in a Challenging Environment Open
Earth’s radiation belts are extremely important for space weather because they can store and accelerate particles to relativistic energies, which can have a potential impact on satellite functionality, communications, and navigation system…
View article: Magnetotail plasma eruptions driven by magnetic reconnection and kinetic instabilities
Magnetotail plasma eruptions driven by magnetic reconnection and kinetic instabilities Open
Rapid plasma eruptions explosively release energy within Earth’s magnetosphere, at the Sun and at other planets. At Earth, these eruptions, termed plasmoids, occur in the magnetospheric nightside and are associated with sudden brightening …
View article: Linear, Quasi-Linear and Nonlinear Radial Transport in the Earth's Radiation Belts
Linear, Quasi-Linear and Nonlinear Radial Transport in the Earth's Radiation Belts Open
Observational studies of the Earth's radiation belts indicate that Alfvénic fluctuations in the frequency range of 2-25 mHz accelerate magnetically trapped electrons to relativistic energies. For decades, statistical models of the Earth's …
View article: Imbalanced Turbulence Modified by Large-scale Velocity Shears in the Solar Wind
Imbalanced Turbulence Modified by Large-scale Velocity Shears in the Solar Wind Open
We have investigated how the degree of imbalance in solar wind turbulence is modified by large-scale velocity shears in the solar wind plasma. The balance between counterpropagating Alfvénic fluctuations, which interact nonlinearly to gene…
View article: Imbalanced Turbulence Modified by Large-scale Velocity Shears in the Solar Wind
Imbalanced Turbulence Modified by Large-scale Velocity Shears in the Solar Wind Open
We have investigated how the degree of imbalance in solar wind turbulence is modified by large-scale velocity shears in the solar wind plasma. The balance between counterpropagating Alfvénic fluctuations, which interact nonlinearly to gene…
View article: Outer radiation belt electron flux and phase space density changes during sheath regions of coronal mass ejections from Van Allen Probes and GPS data
Outer radiation belt electron flux and phase space density changes during sheath regions of coronal mass ejections from Van Allen Probes and GPS data Open
Turbulent and compressed sheath regions ahead of interplanetary coronal mass ejections are key drivers of dramatic changes in the electron fluxes in the Earth’s outer radiation belt. They are also associated with elevated wave activi…