Investigation of the Relationship between Geomagnetic Activity and Solar Wind Parameters Based on A Novel Neural Network (Potential Learning)Predicting geomagnetic conditions based on in-situ solar wind observations allows us to evade disasters caused by large electromagnetic disturbances originating from the Sun to save lives and protect…Ryozo Kitajima, Motoharu Nowada, Ryotaro Kamimura·Mar 9, 2022SaveLearn
Adaptations to a geomagnetic field interpolation method in Southern AfricaSpace weather and its impact on infrastructure presents a clear risk in the modern era, as evidenced by the adverse effects of geomagnetically induced currents (GICs) in power networks. To model…M. J. Heyns, S. I. Lotz, P. J. Cilliers et al.·Mar 8, 2022SaveLearn
First results of Low-latitude Ionospheric Irregularities measured by NavIC and GPS near the Anomaly Crest and the Magnetic EquatorIonospheric irregularity studies are important aspects for understanding ionospheric physics and related processes, especially near the low-latitude regions. However, simultaneous measurements…Sumanjit Chakraborty, Abhirup Datta, Deepthi Ayyagari·Mar 4, 2022SaveLearn
Ion Acceleration at Magnetotail Plasma JetsWe investigate a series of Earthward bursty bulk flows (BBFs) observed by the Magnetospheric Multiscale (MMS) spacecraft in Earth's magnetotail at (-24, 7, 4) RE in Geocentric Solar Magnetospheric…L. Richard, Yu. V. Khotyaintsev, D. B Graham et al.·Mar 1, 2022SaveLearn
On the transmission of turbulent structures across the Earth's Bow ShockCollisionless shocks and plasma turbulence are crucial ingredients for a broad range of astrophysical systems. The shock-turbulence interaction, and in particular the transmission of fully developed…Domenico Trotta, Francesco Pecora, Adriana Settino et al.·Feb 28, 2022SaveLearn
Cosmic ray transport near the SunThe strongly diverging magnetic field lines in the very inner heliosphere, through the associated magnetic focusing/mirroring forces, can, potentially, lead to highly anisotropic galactic cosmic ray…R. D. Strauss, J. P. van den Berg, J. S. Rankin·Feb 23, 2022SaveLearn
Configuration of magnetotail current sheet prior to magnetic reconnection onsetThe magnetotail current sheet configuration determines magnetic reconnection properties that control the substorm onset, one of the most energetic phenomena in the Earth's magnetosphere. The…Xin An, Anton Artemyev, Vassilis Angelopoulos et al.·Feb 19, 2022SaveLearn
Suppression of reconnection in polarized, thin magnetotail current sheets: 2D simulations and implicationsMany in-situ spacecraft observations have demonstrated that magnetic reconnection in the Earth's magnetotail is largely controlled by the pre-reconnection current sheet configuration. One of the most…Xin An, Anton Artemyev, Vassilis Angelopoulos et al.·Feb 13, 2022SaveLearn
Kinetic-scale flux ropes: Observations and applications of kinetic equilibrium modelsMagnetic flux ropes with helical field lines and strong core field are ubiquitous structures in space plasmas. Recently, kinetic-scale flux ropes have been identified by high-resolution observations…Fan Yang, Xu-zhi Zhou, Jing-huan Li et al.·Feb 12, 2022SaveLearn
Identification of Flux Rope Orientation via Neural NetworksGeomagnetic disturbance forecasting is based on the identification of solar wind structures and accurate determination of their magnetic field orientation. For nowcasting activities, this is…Thomas Narock, Ayris Narock, Luiz F. G. Dos Santos et al.·Feb 11, 2022SaveLearn
Alpha-proton Differential Flow of the Young Solar Wind: Parker Solar Probe ObservationsThe velocity of alpha particles relative to protons can vary depending on the solar wind type and distance from the Sun (Marsch 2012). Measurements from the previous spacecraft provided the…P. Mostafavi, R. C. Allen, M. D. McManus et al.·Feb 7, 2022SaveLearn
Pressure-Strain Interaction as the Energy Dissipation Estimate in Collisionless PlasmaThe dissipative mechanism in weakly collisional plasma is a topic that pervades decades of studies without a consensus solution. We compare several energy dissipation estimates based on energy…Yan Yang, William H. Matthaeus, Sohom Roy et al.·Feb 4, 2022SaveLearn
Intermittency in the Expanding Solar Wind: Observations from Parker Solar Probe (0.16au), Helios 1 (0.3-1au), and Voyager 1 (1-10au)We examine statistics of magnetic field vector components to explore how intermittency evolves from near sun plasma to radial distances as large as 10 au. Statistics entering the analysis include…Manuel Enrique Cuesta, Tulasi N. Parashar, Rohit Chhiber et al.·Feb 3, 2022SaveLearn
Unifying the Validation of Ambient Solar Wind ModelsProgress in space weather research and awareness needs community-wide strategies and procedures to evaluate our modeling assets. Here we present the activities of the Ambient Solar Wind Validation…Martin A. Reiss, Karin Muglach, Richard Mullinix et al.·Jan 31, 2022SaveLearn
How a realistic magnetosphere alters the polarizations of surface, fast magnetosonic, and Alfv\'en wavesSystem-scale magnetohydrodynamic (MHD) waves within Earth's magnetosphere are often understood theoretically using box models. While these have been highly instructive in understanding many…M. O. Archer, D. J. Southwood, M. D. Hartinger et al.·Jan 31, 2022SaveLearn
Parameter Distributions for the Drag-Based Modeling of CME PropagationIn recent years, ensemble modeling has been widely employed in space weather to estimate uncertainties in forecasts. We here focus on the ensemble modeling of CME arrival times and arrival velocities…Gianluca Napoletano, Raffaello Foldes, Enrico Camporeale et al.·Jan 28, 2022SaveLearn
Variability of the Incompressible Energy Cascade Rate in Solar Wind Turbulence Around MarsWe present a statistical analysis on the variability of the incompressible energy cascade rate in the solar wind around Mars, making use of an exact relation for fully developed turbulence and more…Norberto Romanelli, Nahuel Andres, Gina DiBraccio·Jan 27, 2022SaveLearn
Sub-Alfvenic Solar Wind observed by PSP: Characterization of Turbulence, Anisotropy, Intermittency, and SwitchbackIn the lower solar coronal regions where the magnetic field is dominant, the Alfven speed is much higher than the wind speed. In contrast, the near-Earth solar wind is strongly super-Alfvenic, i.e.,…R. Bandyopadhyay, W. H. Matthaeus, D. J. McComas et al.·Jan 26, 2022SaveLearn
ULF wave transmission across collisionless shocks: 2.5D local hybrid simulationsWe study the interaction of upstream ultra-low frequency (ULF) waves with collisionless shocks by analyzing the outputs of eleven 2D local hybrid simulation runs. Our simulated shocks have Alfv\'enic…Primoz Kajdic, Yann Pfau-Kempf, Lucile Turc et al.·Jan 25, 2022SaveLearn
On the Existence of Fast Modes in Compressible Magnetohydrodynamic TurbulenceWe study the existence and property of Fast magnetosonic modes in 3D compressible MHD turbulence by carrying out a number of simulations with compressible and incompressible driving conditions. We…Zhaoming Gan, Hui Li, Xiangrong Fu et al.·Jan 20, 2022SaveLearn
MMS Observations of a Compressed Current Sheet: Importance of the Ambipolar Electric FieldSpacecraft data reveals a nonuniform ambipolar electric field transverse to the magnetic field in a thin magnetotail current sheet that leads to intense ExB velocity shear and non-gyrotropic particle…Ami M. DuBois, Chris Crabtree, Gurudas Ganguli et al.·Jan 19, 2022SaveLearn
Observation-based modelling of the energetic storm particle event of 14 July 2012We model the energetic storm particle (ESP) event of 14 July 2012 using the energetic particle acceleration and transport model named PARADISE, together with the solar wind and coronal mass ejection…Nicolas Wijsen, Angels Aran, Camilla Scolini et al.·Jan 17, 2022SaveLearn
Interplay of Three-Dimensional Instabilities and Magnetic Reconnection in the Explosive Onset of Magnetospheric SubstormsMagnetospheric substorms are preceded by a slow growth phase of magnetic flux loading and current sheet thinning in the tail. Extensive datasets have provided evidence of the triggering of…Samuel R. Totorica, Amitava Bhattacharjee·Jan 17, 2022SaveLearn
First comparison of composite 0.52-55 keV ENA spectra observed by IBEX and Cassini/INCA with simulated ENAs inferred by proton hybrid simulations downstream of the termination shockWe present a first comparison of Energetic Neutral Atom (ENA) heliosheath measurements, remotely sensed by the Interstellar Boundary Explorer (IBEX) mission and the Ion and Neutral Camera (INCA) on…Matina Gkioulidou, M. Opher, M. Kornbleuth et al.·Jan 16, 2022SaveLearn
Very Local Interstellar Medium Revealed by Complete Solar Cycle of Interstellar Neutral Helium Observations with IBEXThe IBEX-Lo instrument on board the Interstellar Boundary Explorer (IBEX) mission samples interstellar neutral (ISN) helium atoms penetrating the heliosphere from the very local interstellar medium…P. Swaczyna, M. A. Kubiak, M. Bzowski et al.·Jan 14, 2022SaveLearn