2019 |
Magnetic Field Line Twisting by Photospheric Vortices: Energy Storage and Release
Rappazzo, A.~F.; Velli, M.; Dahlburg, R.~B.; Einaudi, G.;
Published by: \apj Published on: 10/2019
YEAR: 2019   DOI: 10.3847/1538-4357/ab3c69
Parker Data Used; magnetohydrodynamics: MHD; Sun: corona; Sun: coronal mass ejections: CMEs; Astrophysics - Solar and Stellar Astrophysics
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Dynamic Evolution of Current Sheets, Ideal Tearing, Plasmoid Formation and Generalized Fractal Reconnection Scaling Relations
Singh, K.~A.~P.; Pucci, Fulvia; Tenerani, Anna; Shibata, Kazunari; Hillier, Andrew; Velli, Marco;
Published by: \apj Published on: 08/2019
YEAR: 2019   DOI: 10.3847/1538-4357/ab2b99
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; plasmas; Physics - Plasma Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
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Predicting the Structure of the Solar Corona and Inner Heliosphere during Parker Solar Probe \textquoterights First Perihelion Pass
NASA\textquoterights Parker Solar Probe (PSP) spacecraft reached its first perihelion of 35.7 solar radii on 2018 November 5. To aid in mission planning, and in anticipation of the unprecedented measurements to be returned, in late October, we developed a three-dimensional magnetohydrodynamic (MHD) solution for the solar corona and inner heliosphere, driven by the then available observations of the Sun\textquoterights photospheric magnetic field. Our model incorporates a wave-turbulence-driven model to heat the corona. He ...
Riley, Pete; Downs, Cooper; Linker, Jon; Mikic, Zoran; Lionello, Roberto; Caplan, Ronald;
Published by: The Astrophysical Journal Published on: 04/2019
YEAR: 2019   DOI: 10.3847/2041-8213/ab0ec3
Astrophysics - Solar and Stellar Astrophysics; magnetohydrodynamics: MHD; Parker Data Used; parker solar probe; Physics - Space Physics; Solar Probe Plus; Solar wind; Sun: corona; Sun: heliosphere; Sun: magnetic fields; waves
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Contextual Predictions for the Parker Solar Probe . I. Critical Surfaces and Regions
The solar corona and young solar wind may be characterized by critical surfaces\textemdashthe sonic, Alfv\ en, and first plasma-β unity surfaces\textemdashthat demarcate regions where the solar wind flow undergoes certain crucial transformations. Global numerical simulations and remote sensing observations offer a natural mode for the study of these surfaces at large scales, thus providing valuable context for the high-resolution in situ measurements expected from the recently launched Parker Solar Probe (PSP). The prese ...
Chhiber, Rohit; Usmanov, Arcadi; Matthaeus, William; Goldstein, Melvyn;
Published by: The Astrophysical Journal Supplement Series Published on: 03/2019
YEAR: 2019   DOI: 10.3847/1538-4365/ab0652
Astrophysics - Solar and Stellar Astrophysics; magnetohydrodynamics: MHD; Parker Data Used; parker solar probe; Physics - Space Physics; Solar Probe Plus; Solar wind; Sun: corona; turbulence
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The Fluid-like and Kinetic Behavior of Kinetic Alfv\ en Turbulence in Space Plasma
Kinetic Alfv\ en waves (KAWs) are the short-wavelength extension of the magnetohydrodynamics Alfv\ en-wave branch in the case of highly oblique propagation with respect to the background magnetic field. Observations of space plasma show that small-scale turbulence is mainly KAW-like. We apply two theoretical approaches, a collisional two-fluid theory and a collisionless linear kinetic theory, to obtain predictions for the KAW polarizations depending on\ β\ p\ (the ratio of the proton th ...
Wu, Honghong; Verscharen, Daniel; Wicks, Robert; Chen, Christopher; He, Jiansen; Nicolaou, Georgios;
Published by: The Astrophysical Journal Published on: 01/2019
YEAR: 2019   DOI: 10.3847/1538-4357/aaef77
magnetohydrodynamics: MHD; plasmas; solar-terrestrial relations; turbulence; waves; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics
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2018 |
Dependence of Coronal Loop Temperature on Loop Length and Magnetic Field Strength
Dahlburg, R.~B.; Einaudi, G.; Ugarte-Urra, I.; Rappazzo, A.~F.; Velli, M.;
Published by: \apj Published on: 12/2018
YEAR: 2018   DOI: 10.3847/1538-4357/aae535
Parker Data Used; magnetohydrodynamics: MHD; Sun: activity; Sun: corona; turbulence
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Magnetic Helicity Reversal in the Corona at Small Plasma Beta
Solar and stellar dynamos shed small-scale and large-scale magnetic helicity of opposite signs. However, solar wind observations and simulations have shown that some distance above the dynamo both the small-scale and large-scale magnetic helicities have reversed signs. With realistic simulations of the solar corona above an active region now being available, we have access to the magnetic field and current density along coronal loops. We show that a sign reversal in the horizontal averages of the magnetic helicity occurs ...
Bourdin, Philippe; Singh, Nishant; Brandenburg, Axel;
Published by: The Astrophysical Journal Published on: 12/2018
YEAR: 2018   DOI: 10.3847/1538-4357/aae97a
Astrophysics - Solar and Stellar Astrophysics; dynamo; magnetohydrodynamics: MHD; methods: numerical; parker solar probe; Physics - Plasma Physics; Solar Probe Plus; Solar wind; Sun: corona; Sun: magnetic fields
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Prospective White-light Imaging and In Situ Measurements of Quiescent Large-scale Solar-wind Streams from the Parker Solar Probe and Solar Orbiter
Deep-space exploration of the inner heliosphere is in an unprecedented golden age, with the recent and forthcoming launches of the Parker Solar Probe (PSP) and Solar Orbiter (SolO) missions, respectively. In order to both predict and understand the prospective observations by PSP and SolO, we perform forward MHD modeling of the 3D inner heliosphere at solar minimum, and synthesize the white-light (WL) emission that would result from Thomson scattering of sunlight from the coronal and heliospheric plasmas. Both solar rotat ...
Xiong, Ming; Davies, Jackie; Feng, Xueshang; Li, Bo; Yang, Liping; Xia, Lidong; Harrison, Richard; Hayashi, Keiji; Li, Huichao; Zhou, Yufen;
Published by: The Astrophysical Journal Published on: 12/2018
YEAR: 2018   DOI: 10.3847/1538-4357/aae978
magnetohydrodynamics: MHD; methods: numerical; Parker Data Used; parker solar probe; Solar Probe Plus; Solar wind; Sun: corona; Sun: heliosphere
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Incompressive Energy Transfer in the Earth\textquoterights Magnetosheath: Magnetospheric Multiscale Observations
Bandyopadhyay, Riddhi; Chasapis, A.; Chhiber, R.; Parashar, T.~N.; Matthaeus, W.~H.; Shay, M.~A.; Maruca, B.~A.; Burch, J.~L.; Moore, T.~E.; Pollock, C.~J.; Giles, B.~L.; Paterson, W.~R.; Dorelli, J.; Gershman, D.~J.; Torbert, R.~B.; Russell, C.~T.; Strangeway, R.~J.;
Published by: \apj Published on: 10/2018
YEAR: 2018   DOI: 10.3847/1538-4357/aade04
Parker Data Used; magnetohydrodynamics: MHD; planets and satellites: magnetic fields; plasmas; Solar wind; turbulence; Physics - Space Physics
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Solar Wind Turbulence Studies Using MMS Fast Plasma Investigation Data
Bandyopadhyay, Riddhi; Chasapis, A.; Chhiber, R.; Parashar, T.~N.; Maruca, B.~A.; Matthaeus, W.~H.; Schwartz, S.~J.; Eriksson, S.; Le Contel, O.; Breuillard, H.; Burch, J.~L.; Moore, T.~E.; Pollock, C.~J.; Giles, B.~L.; Paterson, W.~R.; Dorelli, J.; Gershman, D.~J.; Torbert, R.~B.; Russell, C.~T.; Strangeway, R.~J.;
Published by: \apj Published on: 10/2018
YEAR: 2018   DOI: 10.3847/1538-4357/aade93
Parker Data Used; magnetohydrodynamics: MHD; methods: data analysis; methods: statistical; plasmas; Solar wind; turbulence; Physics - Space Physics
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Parametric Decay and the Origin of the Low-frequency Alfv\ enic Spectrum of the Solar Wind
The fast solar wind shows a wide spectrum of transverse magnetic and velocity field perturbations. These perturbations are strongly correlated in the sense of Alfv\ en waves propagating mostly outward, from the Sun to the interplanetary medium. They are likely to be fundamental to the acceleration and the heating of the solar wind. However, the precise origin of the broadband spectrum is unknown to date. Typical periods of chromospheric Alfv\ en waves are limited to a few minutes, and any longer period perturbations shoul ...
Réville, Victor; Tenerani, Anna; Velli, Marco;
Published by: The Astrophysical Journal Published on: 10/2018
YEAR: 2018   DOI: 10.3847/1538-4357/aadb8f
instabilities; magnetohydrodynamics: MHD; methods: numerical; parker solar probe; Solar Probe Plus; Solar wind; waves
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The Steady Global Corona and Solar Wind: A Three-dimensional MHD Simulation with Turbulence Transport and Heating
Usmanov, Arcadi; Matthaeus, William; Goldstein, Melvyn; Chhiber, Rohit;
Published by: \apj Published on: 09/2018
YEAR: 2018   DOI: 10.3847/1538-4357/aad687
Parker Data Used; magnetohydrodynamics: MHD; methods: numerical; Solar wind; Sun: corona; Sun: rotation; turbulence
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Marginal Stability of Sweet-Parker Type Current Sheets at Low Lundquist Numbers
Shi, Chen; Velli, Marco; Tenerani, Anna;
Published by: \apj Published on: 06/2018
YEAR: 2018   DOI: 10.3847/1538-4357/aabd83
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; Physics - Plasma Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
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Weakened Magnetization and Onset of Large-scale Turbulence in the Young Solar Wind\textemdashComparisons of Remote Sensing Observations with Simulation
Chhiber, Rohit; Usmanov, Arcadi; DeForest, Craig; Matthaeus, William; Parashar, Tulasi; Goldstein, Melvyn;
Published by: \apjl Published on: 04/2018
YEAR: 2018   DOI: 10.3847/2041-8213/aab843
Parker Data Used; magnetohydrodynamics: MHD; Solar wind; Sun: corona; turbulence
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2017 |
Test Particle Energization and the Anisotropic Effects of Dynamical MHD Turbulence
alez, C.~A.; Dmitruk, P.; Mininni, P.~D.; Matthaeus, W.~H.;
Published by: \apj Published on: 11/2017
YEAR: 2017   DOI: 10.3847/1538-4357/aa8c02
Parker Data Used; acceleration of particles; magnetohydrodynamics: MHD; turbulence; Physics - Plasma Physics; Physics - Space Physics
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Fast Magnetic Reconnection: \textquotedblleftIdeal\textquotedblright Tearing and the Hall Effect
Pucci, Fulvia; Velli, Marco; Tenerani, Anna;
Published by: \apj Published on: 08/2017
YEAR: 2017   DOI: 10.3847/1538-4357/aa7b82
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; plasmas; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics
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Coronal Heating Topology: The Interplay of Current Sheets and Magnetic Field Lines
Rappazzo, A.~F.; Matthaeus, W.~H.; Ruffolo, D.; Velli, M.; Servidio, S.;
Published by: \apj Published on: 07/2017
YEAR: 2017   DOI: 10.3847/1538-4357/aa79f2
Parker Data Used; magnetohydrodynamics: MHD; Solar wind; Sun: activity; Sun: corona; Sun: magnetic fields; turbulence; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics
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Evolving Waves and Turbulence in the Outer Corona and Inner Heliosphere: The Accelerating Expanding Box
Tenerani, Anna; Velli, Marco;
Published by: \apj Published on: 07/2017
YEAR: 2017   DOI: 10.3847/1538-4357/aa71b9
Parker Data Used; magnetohydrodynamics: MHD; methods: numerical; Solar wind; Sun: heliosphere; turbulence; waves; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics
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Turbulent Transport in a Three-dimensional Solar Wind
Shiota, D.; Zank, G.~P.; Adhikari, L.; Hunana, P.; Telloni, D.; Bruno, R.;
Published by: \apj Published on: 03/2017
YEAR: 2017   DOI: 10.3847/1538-4357/aa60bc
Parker Data Used; magnetohydrodynamics: MHD; Solar wind; turbulence
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Reconnection-Driven Coronal-Hole Jets with Gravity and Solar Wind
Karpen, J.~T.; DeVore, C.~R.; Antiochos, S.~K.; Pariat, E.;
Published by: \apj Published on: 01/2017
YEAR: 2017   DOI: 10.3847/1538-4357/834/1/62
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; Solar wind; stars: jets; Sun: activity; Sun: corona; Astrophysics - Solar and Stellar Astrophysics
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Revisiting a Classic: The Parker-Moffatt Problem
Pezzi, O.; Parashar, T.~N.; Servidio, S.; Valentini, F.; asconez, C.~L.; Yang, Y.; Malara, F.; Matthaeus, W.~H.; Veltri, P.;
Published by: \apj Published on: 01/2017
YEAR: 2017   DOI: 10.3847/1538-4357/834/2/166
Parker Data Used; magnetohydrodynamics: MHD; plasmas; Solar wind; Physics - Space Physics
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2016 |
Closed-field Coronal Heating Driven by Wave Turbulence
Downs, Cooper; Lionello, Roberto; c, Zoran; Linker, Jon; Velli, Marco;
Published by: \apj Published on: 12/2016
YEAR: 2016   DOI: 10.3847/0004-637X/832/2/180
Parker Data Used; magnetohydrodynamics: MHD; Sun: corona; Sun: magnetic fields; turbulence; Astrophysics - Solar and Stellar Astrophysics
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Inward Motions in the Outer Solar Corona between 7 and 12 R $_☉$: Evidence for Waves or Magnetic Reconnection Jets?
Tenerani, Anna; Velli, Marco; DeForest, Craig;
Published by: \apjl Published on: 07/2016
YEAR: 2016   DOI: 10.3847/2041-8205/825/1/L3
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; Solar wind; Sun: corona; waves
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SOLAR WIND COLLISIONAL AGE FROM A GLOBAL MAGNETOHYDRODYNAMICS SIMULATION
Simple estimates of the number of Coulomb collisions experienced by the interplanetary plasma to the point of observation, I.e., the \textquotedblleftcollisional age\textquotedblright, can be usefully employed in the study of non-thermal features of the solar wind. Usually these estimates are based on local plasma properties at the point of observation. Here we improve the method of estimation of the collisional age by employing solutions obtained from global three-dimensional magnetohydrodynamics simulations. This enable ...
Chhiber, R; Usmanov, AV; Matthaeus, WH; Goldstein, ML;
Published by: The Astrophysical Journal Published on: 04/2016
YEAR: 2016   DOI: 10.3847/0004-637X/821/1/34
magnetohydrodynamics: MHD; methods: numerical; parker solar probe; plasmas; scattering; Solar Probe Plus; Solar wind; turbulence
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A Four-fluid MHD Model of the Solar Wind/Interstellar Medium Interaction with Turbulence Transport and Pickup Protons as Separate Fluid
Usmanov, Arcadi; Goldstein, Melvyn; Matthaeus, William;
Published by: \apj Published on: 03/2016
YEAR: 2016   DOI: 10.3847/0004-637X/820/1/17
Parker Data Used; ISM: magnetic fields; magnetohydrodynamics: MHD; methods: numerical; Solar wind; Sun: heliosphere; turbulence
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2015 |
Magnetic Reconnection: Recursive Current Sheet Collapse Triggered by \textquotedblleftIdeal\textquotedblright Tearing
Tenerani, Anna; Velli, Marco; Rappazzo, Antonio; Pucci, Fulvia;
Published by: \apjl Published on: 11/2015
YEAR: 2015   DOI: 10.1088/2041-8205/813/2/L32
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; Sun: corona; Physics - Plasma Physics
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Transition from Kinetic to MHD Behavior in a Collisionless Plasma
Parashar, Tulasi; Matthaeus, William; Shay, Michael; Wan, Minping;
Published by: \apj Published on: 10/2015
YEAR: 2015   DOI: 10.1088/0004-637X/811/2/112
Parker Data Used; magnetohydrodynamics: MHD; plasmas; Solar wind; turbulence
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Intermittency and Alignment in Strong RMHD Turbulence
Chandran, B.~D.~G.; Schekochihin, A.~A.; Mallet, A.;
Published by: \apj Published on: 07/2015
YEAR: 2015   DOI: 10.1088/0004-637X/807/1/39
Parker Data Used; magnetohydrodynamics: MHD; plasmas; Solar wind; Sun: chromosphere; Sun: corona; turbulence; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
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Resistive Magnetohydrodynamics Simulations of the Ideal Tearing Mode
Landi, S.; Del Zanna, L.; Papini, E.; Pucci, F.; Velli, M.;
Published by: \apj Published on: 06/2015
YEAR: 2015   DOI: 10.1088/0004-637X/806/1/131
Parker Data Used; magnetohydrodynamics: MHD; magnetic reconnection; methods: numerical; plasmas; Sun: magnetic fields; Astrophysics - Solar and Stellar Astrophysics
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2014 |
Generating Synthetic Magnetic Field Intermittency Using a Minimal Multiscale Lagrangian Mapping Approach
Subedi, P.; Chhiber, R.; Tessein, J.~A.; Wan, M.; Matthaeus, W.~H.;
Published by: \apj Published on: 12/2014
YEAR: 2014   DOI: 10.1088/0004-637X/796/2/97
Parker Data Used; magnetohydrodynamics: MHD; plasmas; turbulence
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Dissipation and Reconnection in Boundary-driven Reduced Magnetohydrodynamics
Wan, Minping; Rappazzo, Antonio; Matthaeus, William; Servidio, Sergio; Oughton, Sean;
Published by: \apj Published on: 12/2014
YEAR: 2014   DOI: 10.1088/0004-637X/797/1/63
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; Sun: corona
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Application of a Solar Wind Model Driven by Turbulence Dissipation to a 2D Magnetic Field Configuration
Lionello, Roberto; Velli, Marco; Downs, Cooper; Linker, Jon; c, Zoran;
Published by: \apj Published on: 12/2014
YEAR: 2014   DOI: 10.1088/0004-637X/796/2/111
Parker Data Used; magnetohydrodynamics: MHD; Solar wind; turbulence; waves; Astrophysics - Solar and Stellar Astrophysics
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Nonlinear and Linear Timescales near Kinetic Scales in Solar Wind Turbulence
Matthaeus, W.~H.; Oughton, S.; Osman, K.~T.; Servidio, S.; Wan, M.; Gary, S.~P.; Shay, M.~A.; Valentini, F.; Roytershteyn, V.; Karimabadi, H.; Chapman, S.~C.;
Published by: \apj Published on: 08/2014
YEAR: 2014   DOI: 10.1088/0004-637X/790/2/155
Parker Data Used; magnetohydrodynamics: MHD; Solar wind; Sun: corona; turbulence; Physics - Space Physics; Physics - Plasma Physics
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Complexity and Diffusion of Magnetic Flux Surfaces in Anisotropic Turbulence
Servidio, S.; Matthaeus, W.~H.; Wan, M.; Ruffolo, D.; Rappazzo, A.~F.; Oughton, S.;
Published by: \apj Published on: 04/2014
YEAR: 2014   DOI: 10.1088/0004-637X/785/1/56
Parker Data Used; ISM: magnetic fields; magnetic fields; magnetic reconnection; magnetohydrodynamics: MHD; Solar wind; Sun: magnetic fields
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Validating a Time-dependent Turbulence-driven Model of the Solar Wind
Lionello, Roberto; Velli, Marco; Downs, Cooper; Linker, Jon; c, Zoran; Verdini, Andrea;
Published by: \apj Published on: 04/2014
YEAR: 2014   DOI: 10.1088/0004-637X/784/2/120
Parker Data Used; magnetohydrodynamics: MHD; Solar wind; turbulence; waves; Astrophysics - Solar and Stellar Astrophysics
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2013 |
Magnetic Field Line Random Walk in Models and Simulations of Reduced Magnetohydrodynamic Turbulence
Snodin, A.~P.; Ruffolo, D.; Oughton, S.; Servidio, S.; Matthaeus, W.~H.;
Published by: \apj Published on: 12/2013
YEAR: 2013   DOI: 10.1088/0004-637X/779/1/56
Parker Data Used; diffusion; magnetic fields; magnetohydrodynamics: MHD; turbulence
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Direct Numerical Simulations of Reflection-driven, Reduced Magnetohydrodynamic Turbulence from the Sun to the Alfv\ en Critical Point
Perez, Jean; Chandran, Benjamin;
Published by: \apj Published on: 10/2013
YEAR: 2013   DOI: 10.1088/0004-637X/776/2/124
Parker Data Used; magnetohydrodynamics: MHD; Solar wind; Sun: corona; turbulence; waves
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Association of Suprathermal Particles with Coherent Structures and Shocks
Tessein, J.~A.; Matthaeus, W.~H.; Wan, M.; Osman, K.~T.; Ruffolo, D.; Giacalone, J.;
Published by: \apjl Published on: 10/2013
YEAR: 2013   DOI: 10.1088/2041-8205/776/1/L8
Parker Data Used; acceleration of particles; magnetohydrodynamics: MHD; plasmas; shock waves; Solar wind
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Current Sheets Formation in Tangled Coronal Magnetic Fields
Rappazzo, A.~F.; Parker, E.~N.;
Published by: \apjl Published on: 08/2013
YEAR: 2013   DOI: 10.1088/2041-8205/773/1/L2
Parker Data Used; magnetohydrodynamics: MHD; Sun: corona; Sun: magnetic topology; Astrophysics - Solar and Stellar Astrophysics
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Field Lines Twisting in a Noisy Corona: Implications for Energy Storage and Release, and Initiation of Solar Eruptions
Rappazzo, A.~F.; Velli, M.; Einaudi, G.;
Published by: \apj Published on: 07/2013
YEAR: 2013   DOI: 10.1088/0004-637X/771/2/76
Parker Data Used; magnetohydrodynamics: MHD; Sun: corona; Sun: coronal mass ejections: CMEs; Sun: magnetic topology; turbulence; Astrophysics - Solar and Stellar Astrophysics
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Intermittent Heating in Solar Wind and Kinetic Simulations
Wu, P.; Perri, S.; Osman, K.; Wan, M.; Matthaeus, W.~H.; Shay, M.~A.; Goldstein, M.~L.; Karimabadi, H.; Chapman, S.;
Published by: \apjl Published on: 02/2013
YEAR: 2013   DOI: 10.1088/2041-8205/763/2/L30
Parker Data Used; magnetohydrodynamics: MHD; Solar wind; Sun: corona; turbulence
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2012 |
Interchange Reconnection in a Turbulent Corona
Rappazzo, A.~F.; Matthaeus, W.~H.; Ruffolo, D.; Servidio, S.; Velli, M.;
Published by: \apjl Published on: 10/2012
YEAR: 2012   DOI: 10.1088/2041-8205/758/1/L14
Parker Data Used; magnetic reconnection; magnetohydrodynamics: MHD; Solar wind; Sun: corona; Sun: magnetic topology; turbulence; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
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