Uncertainty Propagation Using Hybrid MethodsSmall corrections in the argument of the latitude can be used to improve the accuracy of the SGP4 orbit propagator. These corrections have been obtained by applying the hybrid methodology for orbit…Juan Félix San-Juan, Montserrat San-Martín, Iván Pérez et al.·Sep 10, 2021SaveLearn
Unsupervised classification of simulated magnetospheric regionsIn magnetospheric missions, burst mode data sampling should be triggered in the presence of processes of scientific or operational interest. We present an unsupervised classification method for…Maria Elena Innocenti, Jorge Amaya, Joachim Raeder et al.·Sep 10, 2021SaveLearn
A fast bow shock location predictor-estimator from 2D and 3D analytical models: Application to Mars and the MAVEN missionWe present fast algorithms to automatically estimate the statistical position of the bow shock from spacecraft data, using existing analytical two-dimensional (2D) and three-dimensional (3D) models…C. Simon Wedlund, M. Volwerk, A. Beth et al.·Sep 9, 2021SaveLearn
Drift Orbit Bifurcations and Cross-field Transport in the Outer Radiation Belt: Global MHD and Integrated Test-Particle SimulationsEnergetic particle fluxes in the outer magnetosphere present a significant challenge to modelling efforts as they can vary by orders of magnitude in response to solar wind driving conditions. In this…R. T. Desai, J. P. Eastwood, R. B. Horne et al.·Sep 4, 2021SaveLearn
Observations of Asymmetric Lobe Convection for Weak and Strong Tail ActivityIn this study we use high-quality convection data from the Electron Drift Instrument on board Cluster to investigate how near-Earth tail activity affects the average convection pattern in the…A. Ohma, N. Østgaard, J. P. Reistad et al.·Sep 1, 2021SaveLearn
Detection of terrestrial gamma-ray flashes with the AGILE/MCALAGILE is one of the satellites currently detecting terrestrial gamma-ray flashes (TGFs). In particular, the AGILE Mini-CALorimeter detected more than 2000 events in 8 years activity, by exploiting a…Alessandro Ursi, Martino Marisaldi, Marco Tavani·Aug 25, 2021SaveLearn
Two-dimensional particle-in-cell simulation of magnetic reconnection in the downstream of a quasi-perpendicular shockIn this paper, by performing a two-dimensional particle-in-cell simulation, we investigate magnetic reconnection in the downstream of a quasi-perpendicular shock. The shock is nonstationary, and…Quanming Lu, Zhongwei Yang, Huanyu Wang et al.·Aug 25, 2021SaveLearn
MMS direct observations of kinetic-scale shock self-reformationStudies of shocks have long suggested that a shock can undergo cyclically self-reformation in a time scale of ion cyclotron period. This process has been proposed as a primary mechanism for energy…Zhongwei Yang, Ying D. Liu, Andreas Johlander et al.·Aug 24, 2021SaveLearn
Sudden depletion of Alfv\'enic turbulence in the rarefaction region of corotating solar wind high speed streams at 1 AU: possible solar origin?A canonical description of a corotating solar wind high speed stream, in terms of velocity profile, would indicate three main regions:a stream interface or corotating interaction region characterized…Giuseppina Carnevale, Roberto Bruno, Raffaele Marino et al.·Aug 21, 2021SaveLearn
Bursty magnetic reconnection at the Earth's magnetopause triggered by high-speed jetsThe impact of high-speed jets -- dynamic pressure enhancements in the magnetosheath -- on the Earth's magnetopause has been observed to trigger local magnetic reconnection. We perform a…J. Ng, L. -J. Chen, Y. Omelchenko·Aug 21, 2021SaveLearn
Testing the Effect of Solar Wind Parameters and Geomagnetic Storm Indices on Galactic Cosmic Ray Flux Variation with Automated-Selected Forbush DecreasesForbush decrease (FD), discovered by Scott E. Forbush about 80 years ago, is reffered to as the non-repetitive short-term depression in galactic cosmic ray (GCR) flux, presumed to be associated with…Jibrin A. Alhassan., Ogbonnaya Okike, Augustine E. Chukwude·Aug 20, 2021SaveLearn
Magnetic Reconnection within the Boundary Layer of a Magnetic Cloud in the Solar WindThe twisted local magnetic field at the front or rear regions of the magnetic clouds (MCs) associated with interplanetary coronal mass ejections (ICMEs) is often nearly opposite to the direction of…Zoltán Vörös, Ali Varsani, Emiliya Yordanova et al.·Aug 20, 2021SaveLearn
A novel machine learning technique to identify and categorize plasma waves in spacecraft measurementsThe available magnetic field data from the terrestrial magnetosphere, solar wind and planetary magnetospheres exceeds over 106 hours. Identifying plasma waves in these large data sets is a time…Daniel Vech, David M. Malaspina·Aug 19, 2021SaveLearn
Diffuse Josephson Radiation in TurbulenceThe possibility of generating diffuse radiation in extended astronomical media by plasma turbulence is investigated under the assumption that the turbulence can be understood as an ensemble of…R. A. Treumann, Wolfgang Baumjohann·Aug 19, 2021SaveLearn
Triggered ion acoustic waves in the solar windFor more than 12 hours beginning on January 18, 2021, continuous narrowband electrostatic emissions were observed on Parker Solar Probe near 20 solar radii. The observed <1000 Hz frequencies were…Forrest S. Mozer, Ivan . Y. Vasko, J. L. Verniero·Aug 17, 2021SaveLearn
First estimations of Gravity Wave Potential Energy in the Martian thermosphere: An analysis using MAVEN NGIMS dataFirst estimations of Gravity Wave Potential Energy (GWPE) for the Martian thermosphere are reported herein using the height profile of CO2 density derived temperature fluctuations for different…G Manju, Mridula N·Aug 17, 2021SaveLearn
Energy Balance at Interplanetary Shocks: In-situ Measurement of the Fraction in Supra-thermal and Energetic Particles with ACE and WindThe acceleration of charged particles by interplanetary shocks can drain a non-negligible fraction of the upstream ram pressure. For a sample of shocks observed in-situ at 1 AU by the ACE and Wind…Liam David, Federico Fraschetti, Joe Giacalone et al.·Aug 16, 2021SaveLearn
Relating the Solar Wind Turbulence Spectral Break at the Dissipation Range with an Upstream Spectral Bump at Planetary Bow ShocksAt scales much larger than the ion inertial scale and the gyro-radius of thermal protons, magnetohydrodynamic (MHD) theory is well equipped to describe the nature of solar wind turbulence. The…Michael Terres, Gang Li·Aug 16, 2021SaveLearn
Statistical Study on Spatial Distribution and Polarization of Saturn Narrowband EmissionsThe spatial distribution and polarization of Saturn narrowband (NB) emissions have been studied by using Cassini Radio and Plasma Wave Sciences data and goniopolarimetric data obtained through an…Siyuan. Wu, Shengyi. Ye, Georg. Fischer et al.·Aug 16, 2021SaveLearn
Machine learning for predicting the Bz magnetic field component from upstream in situ observations of solar coronal mass ejectionsPredicting the Bz magnetic field embedded within ICMEs, also known as the Bz problem, is a key challenge in space weather forecasting. We study the hypothesis that upstream in situ measurements of…Martin A. Reiss, Christian Möstl, Rachel L. Bailey et al.·Aug 9, 2021SaveLearn
Cross-helicity and transition from magnetohydrodynamics to kinetics in space plasmasCross-helicity dominated distributed chaos (CHDC) for magnetohydrodynamic (large-scale) and kinetic (small-scale) ranges of space plasmas has been studied using results of direct numerical…A. Bershadskii·Aug 4, 2021SaveLearn
System Modelling of Very Low Earth Orbit Satellites for Earth ObservationThe operation of satellites in very low Earth orbit (VLEO) has been linked to a variety of benefits to both the spacecraft platform and mission design. Critically, for Earth observation (EO) missions…N. H. Crisp, P. C. E. Roberts, K. L. Smith et al.·Aug 4, 2021SaveLearn
Spatial Variation in the Responses of the Surface External and Induced Magnetic Field to the Solar WindWe analyze the spatial variation in the response of the surface geomagnetic field (or the equivalent ionospheric current) to variations in the solar wind. Specifically, we regress a reanalysis of…R. M. Shore, M. P. Freeman, J. C. Coxon et al.·Aug 3, 2021SaveLearn
Interplanetary Magnetic Field Control of PolarIonospheric Equivalent Current System ModesWe analyze the response of different ionospheric equivalent current modes to variations in the interplanetary magnetic field (IMF) components By and Bz. Each mode comprises a fixed spatial pattern…R. M. Shore, M. P. Freeman, J. W. Gjerloev·Aug 3, 2021SaveLearn
The Benefits of Spin Polarization for Inertial and Magneto-Inertial Fusion PropulsionSpin-polarized fusion has the potential to lower the radiation shielding and ignition requirements for fusion rockets while simultaneously increasing the fusion fuel burnup and provide better…Gerrit Bruhaug, Ayden Kish·Aug 2, 2021SaveLearn