Theoretical investigation of the bow shock location for the solar wind interacting with the unmagnetized planetMartian bow shocks, the solar wind interacting with an unmagnetized planet, are studied. We theoretically investigated how solar parameters, such as the solar wind dynamic pressure and the solar…I-Lin Yeh, Sunny W. Y. Tam, Po-Yu Chang·Jan 6, 2020SaveLearn
MMS Observations of Whistler and Lower Hybrid Drift Waves Associated with Magnetic Reconnection in the Turbulent MagnetosheathMagnetic reconnection (MR) and the associated concurrently occurring waves have been extensively studied at large-scale plasma boundaries, in quasi-symmetric and asymmetric configurations in the…Vörös Zoltán, Emiliya Yordanova, Daniel B. Graham et al.·Jan 1, 2020SaveLearn
Radial Evolution of Coronal Mass Ejections Between MESSENGER, Venus Express, STEREO, and L1: Catalog and AnalysisOur knowledge of the properties of Coronal Mass Ejections (CMEs) in the inner heliosphere is constrained by the relative lack of plasma observations between Sun and 1 AU. In this work, we present a…T. M. Salman, R. M. Winslow, N. Lugaz·Dec 26, 2019SaveLearn
Frequency Components of Geomagnetically Induced Currents for Power System ModellingGeomagnetically induced currents (GICs) in power systems are conventionally modelled as direct currents, based on their commonly described quasi-DC nature. For more representative power system…D. T. O. Oyedokun, M. J. Heyns, P. J. Cilliers et al.·Dec 19, 2019SaveLearn
In situ Measurement of Curvature of Magnetic Field in Turbulent Space Plasmas: A Statistical StudyUsing in situ data, accumulated in the turbulent magnetosheath by the Magnetospheric Multiscale (MMS) Mission, we report a statistical study of magnetic field curvature and discuss its role in the…Riddhi Bandyopadhyay, Yan Yang, William H. Matthaeus et al.·Dec 19, 2019SaveLearn
PIC simulation of a shock tube: Implications for wave transmission in the heliospheric boundary regionA shock tube problem is solved numerically by using one-dimensional full particle-in-cell simulations under the condition that a relatively tenuous and weakly magnetized plasma is continuously pushed…S. Matsukiyo, T. Noumi, G. P. Zank et al.·Dec 19, 2019SaveLearn
Heavy Ion Acceleration by Super-Alfvenic WavesA generation mechanism of super Alfv\'enic (SPA) waves in multi-ion species plasma is proposed and the associated heavy ion acceleration process is discussed. The SPA waves are thought to play…S. Matsukiyo, T. Akamizu, T. Hada·Dec 19, 2019SaveLearn
CME -Associated Energetic Ions at 0.23 AU -- Consideration of the Auroral Pressure Cooker Mechanism Operating in the Low Corona as a Possible Energization ProcessWe draw a comparison between a solar energetic particle event associated with the release of a slow coronal mass ejection close to the sun, and the energetic particle population produced in high…D. G. Mitchell, J. Giacalone, R. C. Allen et al.·Dec 18, 2019SaveLearn
Energetic Particle Increases Associated with Stream Interaction RegionsThe Parker Solar Probe was launched on 2018 August 12 and completed its second orbit on 2019 June 19 with perihelion of 35.7 solar radii. During this time, the Energetic particle Instrument-Hi…C. M. S. Cohen, E. R. Christian, A. C. Cummings et al.·Dec 17, 2019SaveLearn
Whistler instabilities from the interplay of electron anisotropies in space plasmas: A quasilinear approachRecent statistical studies of observational data unveil relevant correlations between whistler fluctuations and the anisotropic electron populations present in space plasmas, e.g., solar wind and…S. M. Shaaban, M. Lazar·Dec 17, 2019SaveLearn
Cross Helicity Reversals In Magnetic SwitchbacksWe consider 2D joint distributions of normalised residual energy σr(s,t) and cross helicity σc(s,t) during one day of Parker Solar Probe's (PSP's) first encounter as a function of…Michael D. McManus, Trevor A. Bowen, Alfred Mallet et al.·Dec 17, 2019SaveLearn
Kinetic Scale Spectral Features of Cross Helicity and Residual Energy in the Inner HeliosphereIn this Paper, we present the first results from the Flux Angle operation mode of the Faraday Cup instrument onboard Parker Solar Probe. The Flux Angle mode allows rapid measurements of phase space…Daniel Vech, Justin C. Kasper, Kristopher G. Klein et al.·Dec 16, 2019SaveLearn
Measures of Scale Dependent Alfv\'enicity in the First PSP Solar EncounterThe solar wind shows periods of highly Alfv\'enic activity, where velocity fluctuations and magnetic fluctuations are aligned or anti-aligned with each other. It is generally agreed that solar wind…T. N. Parashar, M. L. Goldstein, B. A. Maruca et al.·Dec 16, 2019SaveLearn
Plasma Waves near the Electron Cyclotron Frequency in the near-Sun Solar WindData from the first two orbits of the Sun by Parker Solar Probe reveal that the solar wind sunward of 50 solar radii is replete with plasma waves and instabilities. One of the most prominent plasma…David M. Malaspina, Jasper Halekas, Laura Bercic et al.·Dec 14, 2019SaveLearn
Switchbacks in the solar magnetic field: their evolution, their content, and their effects on the plasma, V2Switchbacks (rotations of the magnetic field) are observed on the Parker Solar Probe. Their evolution, content, and plasma effects are studied in this paper. The solar wind does not receive a net…F. S. Mozer1, O. V. Agapitov1, S. D. Bale1 et al.·Dec 13, 2019SaveLearn
Observations of heating along intermittent structures in the inner heliosphere from PSP dataThe solar wind proton temperature at 1-au has been found to be correlated with small-scale intermittent magnetic structures, i.e., regions with enhanced temperature are associated with coherent…R. A. Qudsi, B. A. Maruca, W. H. Matthaeus et al.·Dec 11, 2019SaveLearn
Evolution of a Long-Duration Coronal Mass Ejection and its Sheath Region Between Mercury and Earth on 2013 July 9-14Using in situ measurements and remote-sensing observations, we study a coronal mass ejection (CME) that left the Sun on 9 July 2013 and impacted both Mercury and Earth while the planets were in…N. Lugaz, R. M. Winslow, C. J. Farrugia·Dec 11, 2019SaveLearn
dSECS: Including Variometers in Geomagnetic Field InterpolationOne of the best tools we have in geophysical modelling is the ability to interpolate the horizontal geomagnetic field at the surface of the Earth. This is especially useful in regions, such as…M. J. Heyns, S. I. Lotz, C. T. Gaunt·Dec 10, 2019SaveLearn
Ensemble Estimation of Network Parameters: A Tool to Improve the Real-time Estimation of GICs in the South African Power NetworkIt has long been known that large grounded conducting networks on the surface of Earth are affected by solar activity and geomagnetic storms. Power networks are such extensive grounded conductors and…M. J. Heyns, S. I. Lotz, P. J. Cilliers et al.·Dec 10, 2019SaveLearn
Measuring the Earth's Synchrotron Emission from Radiation Belts with a Lunar Near Side Radio ArrayThe high kinetic energy electrons that populate the Earth's radiation belts emit synchrotron emissions because of their interaction with the planetary magnetic field. A lunar near side array would be…Alexander Hegedus, Quentin Nenon, Antoine Brunet et al.·Dec 10, 2019SaveLearn
Proton Temperature Anisotropy Variations in Inner Heliosphere Estimated with First Parker Solar Probe ObservationsWe report proton temperature anisotropy variations in the inner heliosphere with Parker Solar Probe (PSP) observations. Using a linear fitting method, we derive proton temperature anisotropy with…Jia Huang, Justin C. Kasper, Daniel Vech et al.·Dec 9, 2019SaveLearn
Clustering of Intermittent Magnetic and Flow Structures near Parker Solar Probe's First Perihelion -- A Partial-Variance-of-Increments AnalysisDuring the Parker Solar Probe's (PSP) first perihelion pass, the spacecraft reached within a heliocentric distance of \( 37~R\) and observed numerous magnetic and flow structures…Rohit Chhiber, M. Goldstein, B. Maruca et al.·Dec 8, 2019SaveLearn
Suprathermal electron acceleration by a quasi-perpendicular shock: simulations and observationsThe acceleration of suprathermal electrons in the solar wind is mainly associated with shocks driven by interplanetary coronal mass ejections (ICMEs). It is well known that the acceleration of…F. -J. Kong, G. Qin·Dec 8, 2019SaveLearn
Time domain structures and dust in the solar vicinity: Parker Solar Probe observationsOn April 5, 2019, while the Parker Solar Probe was at its 35 solar radius perihelion, the data set collected at 293 samples/sec contained more than 10,000 examples of spiky electric-field-like…F. S. Mozer, O. V. Agapitov, S. D. Bale et al.·Dec 7, 2019SaveLearn
Observations of Energetic-Particle Population Enhancements along Intermittent Structures near the Sun from Parker Solar ProbeObservations at 1 au have confirmed that enhancements in measured energetic particle fluxes are statistically associated with "rough" magnetic fields, i.e., fields having atypically large spatial…Riddhi Bandyopadhyay, W. H. Matthaeus, T. N. Parashar et al.·Dec 7, 2019SaveLearn