Long-lasting injection of solar energetic electrons into the heliosphereThe main sources of solar energetic particle (SEP) events are solar flares and shocks driven by coronal mass ejections (CMEs). While it is generally accepted that energetic protons can be accelerated…Nina Dresing, Raúl Gómez-Herrero, Bernd Heber et al.·Feb 13, 2018SaveLearn
Correlation of ICME Magnetic Fields at Radially Aligned SpacecraftThe B-field structures of two ICMEs each observed by a pair of spacecraft close to radial alignment have been analysed. The ICMEs were observed in situ by MESSENGER and STEREO-B in Nov. 2010 and Nov.…S. W. Good, R. J. Forsyth, J. P. Eastwood et al.·Feb 12, 2018SaveLearn
Laboratory Space Physics: Investigating the Physics of Space Plasmas in the LaboratoryLaboratory experiments provide a valuable complement to explore the fundamental physics of space plasmas without the limitations inherent to spacecraft measurements. Specifically, experiments…Gregory G. Howes·Feb 9, 2018SaveLearn
Common solar wind drivers behind magnetic storm-magnetospheric substorm dependencyThe dynamical relationship between magnetic storms and magnetospheric substorms presents one of the most controversial problems of contemporary geospace research. Here, we tackle this issue by…Jakob Runge, Georgios Balasis, Ioannis A. Daglis et al.·Feb 7, 2018SaveLearn
Electron Physics in 3D Two-Fluid Ten-Moment Modeling of Ganymede's MagnetosphereWe studied the role of electron physics in 3D two-fluid 10-moment simulation of the Ganymede's magnetosphere. The model captures non-ideal physics like the Hall effect, the electron inertia, and…Liang Wang, Kai Germaschewski, Ammar Hakim et al.·Feb 6, 2018SaveLearn
Assessing the time dependence of reconnection with Poynting's theorem: MMS observationsWe investigate the time dependence of electromagnetic-field-to-plasma energy conversion in the electron diffusion region of asymmetric magnetic reconnection. To do so, we consider the terms in…Kevin J. Genestreti, Paul A. Cassak, Ali Varsani et al.·Jan 31, 2018SaveLearn
Uncertainties in the heliosheath ion temperaturesThe Voyager plasma observations show that the physics of the heliosheath is rather complex, and especially that the temperature derived from observation differs from expectations. To explain this…Klaus Scherer, Hans Jörg Fahr, Horst Fichtner et al.·Jan 31, 2018SaveLearn
Electrostatic steepening of whistler wavesWe present surprising observations by the NASA Van Allen Probes spacecraft of whistler waves with substantial electric field power at harmonics of the whistler wave fundamental frequency. The wave…Ivan Y. Vasko, Oleksiy V. Agapitov, Forrest S. Mozer et al.·Jan 30, 2018SaveLearn
Detection of short term response of the low ionosphere on gamma ray burstsIn this paper, we study the possibility of detection of short term terrestrial lower ionospheric response to gamma ray bursts (GRBs) using a statistical analysis of perturbations of six very low or…Aleksandra Nina, Saša Simić, Vladimir A. Srećković et al.·Jan 30, 2018SaveLearn
Recurrence based quantification of dynamical complexity in the Earth's magnetosphere at geospace storm timescalesMagnetic storms are the most prominent global manifestations of out-of-equilibrium magnetospheric dynamics. Investigating the dynamical complexity exhibited by geomagnetic observables can provide…Reik V. Donner, Georgios Balasis, Veronika Stolbova et al.·Jan 29, 2018SaveLearn
The Structure of Martian Magnetosphere at the Dayside Terminator Region as Observed on MAVEN SpacecraftWe analyzed 44 passes of the MAVEN spacecraft through the magnetosphere, arranged by the angle between electric field vector and the projection of spacecraft position radius vector in the YZ plane in…O. L. Vaisberg, V. N. Ermakov, S. D. Shuvalov et al.·Jan 26, 2018SaveLearn
Unexpected cyclic behavior in cosmic ray protons observed by PAMELA at 1 AUProtons detected by the PAMELA experiment in the period 2006-2014 have been analyzed in the energy range between 0.40-50 GV to explore possible periodicities besides the well known solar undecennial…O. Adriani, G. C. Barbarino, G. A. Bazilevskaya et al.·Jan 24, 2018SaveLearn
Verification of real-time WSA-ENLIL+Cone simulations of CME arrival-time at the CCMC from 2010-2016The Wang-Sheeley-Arge (WSA)-ENLIL+Cone model is used extensively in space weather operations world-wide to model CME propagation. As such, it is important to assess its performance. We present…A. M. Wold, M. L. Mays, A. Taktakishvili et al.·Jan 24, 2018SaveLearn
Observed instability constraints on electron heat flux in the solar windWe present for the first time the joint distribution of electron heat flux and electron plasma beta, and the joint distribution of core electron drift velocity and electron plasma beta using a…Yuguang Tong, Stuart D. Bale, Chadi Salem et al.·Jan 23, 2018SaveLearn
The Role of Proton-Cyclotron Resonance as a Dissipation Mechanism in Solar Wind Turbulence: A Statistical Study at Ion-Kinetic ScalesWe use magnetic field and ion moment data from the MFI and SWE instruments onboard the Wind spacecraft to study the nature of solar wind turbulence at ion-kinetic scales. We analyze the spectral…Lloyd D. Woodham, Robert T. Wicks, Daniel Verscharen et al.·Jan 22, 2018SaveLearn
Proton fluxes measured by the PAMELA experiment from the minimum to the maximum solar activity for the 24th solar cyclePrecise measurements of the time-dependent intensity of the low energy (<50 GeV) galactic cosmic rays are fundamental to test and improve the models which describe their propagation inside the…M. Martucci, R. Munini, M. Boezio et al.·Jan 22, 2018SaveLearn
Mesospheric optical signatures of possible lightning on VenusA self-consistent two-dimensional model is proposed to account for the transient mesospheric nighttime optical emissions associated to possible intra-cloud (IC) lightning occurring in the Venusian…F. J. Pérez-Invernón, A. Luque, F. J. Gordillo-Vázquez·Jan 20, 2018SaveLearn
Three-dimensional modeling of lightning-induced electromagnetic pulses on Venus, Jupiter and SaturnWhile lightning activity in Venus is still controversial, its existence in Jupiter and Saturn was first detected by the Voyager missions and later on confirmed by Cassini and New Horizons optical…F. J. Pérez-Invernón, A. Luque, F. J. Gordillo-Vázquez·Jan 20, 2018SaveLearn
A Probabilistic Approach to the Drag-Based ModelThe forecast of the time of arrival of a coronal mass ejection (CME) to Earth is of critical importance for our high-technology society and for any future manned exploration of the Solar System. As…Gianluca Napoletano, Roberta Forte, Dario Del Moro et al.·Jan 11, 2018SaveLearn
Observational evidence for self-generation of small-scale magnetic flux ropes from intermittent solar wind turbulenceWe present unique and additional observational evidence for the self-generation of small-scale coherent magnetic flux rope structures in the solar wind. Such structures with durations between 9 and…Jinlei Zheng, Qiang Hu·Jan 5, 2018SaveLearn
The Physical Foundation of the Reconnection Electric FieldWe report on computer simulations and analytic theory to provide a self-consistent understanding of the role of the reconnection electric field, which extends substantially beyond the simple change…M. Hesse, Y. -H. Liu, L. -J. Chen et al.·Jan 3, 2018SaveLearn
Interpretation of increased energetic particle flux measurements by SEPT aboard the STEREO spacecraft and contaminationContext. Interplanetary (IP) shocks are known to be accelerators of energetic charged particles observed in-situ in the heliosphere. However, the acceleration of near-relativistic electrons by shocks…S. Wraase, B. Heber, S. Böttcher et al.·Jan 2, 2018SaveLearn
Magnetospheric Multiscale Dayside Reconnection Electron Diffusion Region EventsWe have used the high-resolution data of the Magnetospheric Multiscale (MMS) mission dayside phase to identify twenty-one previously unreported encounters with the electron diffusion region (EDR), as…J. M. Webster, J. L. Burch, P. H. Reiff et al.·Dec 28, 2017SaveLearn
On the statistical properties of turbulent energy transfer rate in the inner HeliosphereThe transfer of energy from large to small scales in solar wind turbulence is an important ingredient of the longstanding question about the mechanism of the interplanetary plasma heating. Previous…Luca Sorriso-Valvo, Francesco Carbone, Silvia Perri et al.·Dec 28, 2017SaveLearn
Parametric Instability, Inverse Cascade, and the 1/f Range of Solar-Wind TurbulenceIn this paper, weak turbulence theory is used to investigate the nonlinear evolution of the parametric instability in 3D low-β plasmas at wavelengths much greater than the ion inertial length under…Benjamin D. G. Chandran·Dec 26, 2017SaveLearn