Particle Energization in Space Plasmas: Towards a Multi-Point, Multi-Scale Plasma Observatory. A White Paper for the Voyage 2050 long-term plan in the ESA's Science ProgrammeThis White Paper outlines the importance of addressing the fundamental science theme <<How are charged particles energized in space plasmas>> through a future ESA mission. The White Paper presents…Alessandro Retino, Yuri Khotyaintsev, Olivier Le Contel et al.·Sep 6, 2019SaveLearn
Exploring the Foundations of the Universe with Space Tests of the Equivalence PrincipleWe present the scientific motivation for future space tests of the equivalence principle, and in particular the universality of free fall, at the 10-17 level or better. Two possible mission…Baptiste Battelier, Joël Bergé, Andrea Bertoldi et al.·Aug 30, 2019SaveLearn
LISA Pathfinder Performance Confirmed in an Open-Loop Configuration: Results from the Free-Fall Actuation ModeWe report on the results of the LISA Pathfinder (LPF) free-fall mode experiment, in which the control force needed to compensate the quasistatic differential force acting on two test masses is…M. Armano, H. Audley, J. Baird et al.·Aug 30, 2019SaveLearn
Observations of Electromagnetic Electron Holes and Evidence of Cherenkov Whistler EmissionWe report observations of electromagnetic electron holes (EHs). We use multi-spacecraft analysis to quantify the magnetic field contributions of three mechanisms: the Lorentz transform, electron…Konrad Steinvall, Yuri V. Khotyaintsev, Daniel B. Graham et al.·Aug 29, 2019SaveLearn
Electron acceleration and thermalization at magnetotail separatricesIn this study we use the Magnetospheric Multiscale (MMS) mission to investigate the electron acceleration and thermalization occurring along the magnetic reconnection separatrices in the magnetotail.…C. Norgren, M. Hesse, P. Tenfjord et al.·Aug 29, 2019SaveLearn
Universality of lower hybrid waves at Earth's magnetopauseWaves around the lower hybrid frequency are frequently observed at Earth's magnetopause, and readily reach very large amplitudes. Determining the properties of lower hybrid waves is crucial because…D. B. Graham, Yu. V. Khotyaintsev, C. Norgren et al.·Aug 28, 2019SaveLearn
Electron Heating by Debye-Scale Turbulence in Guide-Field ReconnectionWe report electrostatic Debye-scale turbulence developing within the diffusion region of asymmetric magnetopause reconnection with moderate guide field using observations by the Magnetospheric…Yu. V. Khotyaintsev, D. B. Graham, K. Steinvall et al.·Aug 26, 2019SaveLearn
Seeds for collisionless reconnectionA stationary, two-dimensional, and non-driven antiparallel magnetic field configuration consisting of a central current film, flanked by two non-magnetic domains of electron inertial scale,…R. A. Treumann, Wolfgang Baumjohann·Aug 26, 2019SaveLearn
Kappa-Maxwellian electrons and Bi-Maxwellian protons in a two-fluid model for fast solar windModeling fast solar wind based on the kinetic theory is an important task for scientists. In this paper, we present a two-fluid model for fast solar wind with anisotropic Kappa-Maxwellian electrons…Somayeh Taran, Hossein Safari, Farhad Daei·Aug 24, 2019SaveLearn
On the Close Correspondence between Storm-time ULF Wave Power and the POES VLF Chorus Wave Amplitude ProxyGround-based Pc5 ULF wave power in multiple ground-based meridians is compared to the VLF wave amplitude proxy, derived from POES precipitation, for the 33 storms studied by Li et al. [2015]. The…Stavros Dimitrakoudis, Ian R. Mann·Aug 22, 2019SaveLearn
Investigation of HZE particle fluxes as a space radiation hazard for future Mars missionsManned Mars missions planned in the near future of very low solar activity period and hence higher than acceptable radiation doses due mainly to the Galactic Cosmic Rays (GCR), would require special…Nagaraja Kamsali, S. C. Chakravarty, Praveen Kumar Basuvaraj·Aug 22, 2019SaveLearn
Turbulence vs. fire hose instabilities: 3-D hybrid expanding box simulationsThe relationship between a decaying plasma turbulence and proton fire hose instabilities in a slowly expanding plasma is investigated using three-dimensional (3-D) hybrid expanding box simulations.…P. Hellinger, L. Matteini, S. Landi et al.·Aug 21, 2019SaveLearn
Effects of alpha-proton differential flow on proton temperature anisotropy instabilities in the solar wind: Wind observationsPlasma kinetic waves and alpha-proton differential flow are two important subjects on the topic of evolution of the solar wind. Based on the Wind data during 2005-2015, this paper reports that the…G. Q. Zhao, H. Li, H. Q. Feng et al.·Aug 21, 2019SaveLearn
Scattering of energetic electrons by heat-flux-driven whistlers in flaresThe scattering of electrons by heat-flux-driven whistler waves is explored with a particle-in-cell (PIC) simulation relevant to the transport of energetic electrons in flares. The simulation is…G. T. Roberg-Clark, O. V. Agapitov, J. F. Drake et al.·Aug 18, 2019SaveLearn
Summary of the plenary sessions at European Space Weather Week 15: space weather users and service providers working together now and in the futureDuring European Space Weather Week 15 two plenary sessions were held to review the status of operational space weather forecasting. The first session addressed the topic of working with space weather…Suzy Bingham, Sophie A. Murray, Antonio Guerrero et al.·Aug 16, 2019SaveLearn
Inflation deployed torus-shaped solar sail accelerated via thermal desorption of coatingA torus-shaped sail consists of a reflective membrane attached to an inflatable torus-shaped rim. The sail's deployment from its stowed configuration is initiated by introducing inflation pressure…Roman Ya. Kezerashvili, Olga L. Starinova, Alexander S. Chekashov et al.·Aug 15, 2019SaveLearn
Automated classification of plasma regions using 3D particle energy distributionsWe investigate the properties of the ion sky maps produced by the Dual Ion Spectrometers (DIS) from the Fast Plasma Investigation (FPI). We have trained a convolutional neural network classifier to…Vyacheslav Olshevsky, Yuri V. Khotyaintsev, Ahmad Lalti et al.·Aug 15, 2019SaveLearn
Mars' plasma system. Scientific potential of coordinated multi-point missions: "The next generation" (A White Paper submitted to ESA's Voyage 2050 Call)The objective of this White Paper submitted to ESA's Voyage 2050 call is to get a more holistic knowledge of the dynamics of the Martian plasma system from its surface up to the undisturbed solar…Beatriz Sánchez-Cano, Mark Lester, David J. Andrews et al.·Aug 15, 2019SaveLearn
Exploring Solar-Terrestrial Interactions via Multiple Observers (A White Paper for the Voyage 2050 long-term plan in the ESA Science Programme)This paper addresses the fundamental science question: "How does solar wind energy flow through the Earth's magnetosphere, how is it converted and distributed?". We need to understand how the Sun…G. Branduardi-Raymont, M. Berthomier, Y. Bogdanova et al.·Aug 13, 2019SaveLearn
Statistical analysis of ions in two-dimensional plasma turbulenceThe statistical properties of ions in two-dimensional fully developed turbulence have been compared between two different numerical algorithms. In particular, we compare Hybrid Particle In Cell…Francesco Pecora, Francesco Pucci, Giovanni Lapenta et al.·Aug 7, 2019SaveLearn
Implication of Kinetic Alfven Waves to Magnetic Field Turbulence Spectra: Earth's MagnetosheathIn the present paper, we investigate the power-law behaviour of the magnetic field spectra in the Earths magnetosheath region using Cluster spacecraft data under solar minimum condition. The power…N. K. Dwivedi, S. Kumar, P. Kovacs et al.·Aug 7, 2019SaveLearn
The in-situ exploration of Jupiter's radiation belts (A White Paper submitted in response to ESA's Voyage 2050 Call)Jupiter has the most energetic and complex radiation belts in our solar system. Their hazardous environment is the reason why so many spacecraft avoid rather than investigate them, and explains how…Elias Roussos, Oliver Allanson, Nicolas André et al.·Aug 6, 2019SaveLearn
A Case for Electron-AstrophysicsA grand-challenge problem at the forefront of physics is to understand how energy is transported and transformed in plasmas. This fundamental research priority encapsulates the conversion of…Daniel Verscharen, Robert T. Wicks, Olga Alexandrova et al.·Aug 6, 2019SaveLearn
3-D feature of self-correlation level contours at 1010\ cm scale in solar wind turbulenceThe self-correlation level contours at 1010\ cm scale reveal a 2-D isotropic feature in both the slow solar wind fluctuations and the fast solar wind fluctuations. However, this 2-D…Honghong Wu, Chuanyi Tu, Xin Wang et al.·Aug 6, 2019SaveLearn
Enceladus and Titan: Emerging Worlds of the Solar System (ESA Voyage 2050 White Paper)Some of the major discoveries of the recent Cassini-Huygens mission have put Titan and Enceladus firmly on the Solar System map. The mission has revolutionised our view of Solar System satellites,…Ali Sulaiman, Nicholas Achilleos, Sushil Atreya et al.·Aug 6, 2019SaveLearn