| 2014 |
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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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DYNAMICS OF DOUBLE LAYERS, ION ACCELERATION, AND HEAT FLUX SUPPRESSION DURING SOLAR FLARES
Observations of flare-heated electrons in the corona typically suggest confinement of electrons. The confinement mechanism, however, remains unclear. The transport of coronal hot electrons into ambient plasma was recently investigated by particle-in-cell (PIC) simulations. Electron transport was significantly suppressed by the formation of a highly localized, nonlinear electrostatic potential in the form of a double layer (DL). In this work large-scale PIC simulations are performed to explore the dynamics of DLs in larger ...
Li, T.; Drake, J.; Swisdak, M.;
Published by: The Astrophysical Journal Published on: 09/2014
YEAR: 2014 DOI: 10.1088/0004-637X/793/1/7
acceleration of particles; Astrophysics - Solar and Stellar Astrophysics; parker solar probe; Physics - Plasma Physics; Physics - Space Physics; Solar Probe Plus; Solar wind; Sun: corona; Sun: flares
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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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Role of Transients in the Sustainability of Solar Coronal Plumes
Raouafi, N.; Stenborg, G.;
Published by: \apj Published on: 06/2014
YEAR: 2014 DOI: 10.1088/0004-637X/787/2/118
Parker Data Used; plasmas; Sun: activity; Sun: corona; Sun: magnetic fields; Sun: UV radiation
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INBOUND WAVES IN THE SOLAR CORONA: A DIRECT INDICATOR OF ALFV\ EN SURFACE LOCATION
The tenuous supersonic solar wind that streams from the top of the corona passes through a natural boundary\textemdashthe Alfv\ en surface\textemdashthat marks the causal disconnection of individual packets of plasma and magnetic flux from the Sun itself. The Alfv\ en surface is the locus where the radial motion of the accelerating solar wind passes the radial Alfv\ en speed, and therefore any displacement of material cannot carry information back down into the corona. It is thus the natural outer boundary of the solar co ...
Deforest, C.; Howard, T.; McComas, D.;
Published by: The Astrophysical Journal Published on: 06/2014
YEAR: 2014 DOI: 10.1088/0004-637X/787/2/124
Astrophysics - Solar and Stellar Astrophysics; parker solar probe; Solar Probe Plus; Solar wind; Sun: corona; Sun: fundamental parameters; techniques: image processing
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Test-particle Acceleration in a Hierarchical Three-dimensional Turbulence Model
Dalena, S.; Rappazzo, A.~F.; Dmitruk, P.; Greco, A.; Matthaeus, W.~H.;
Published by: \apj Published on: 03/2014
YEAR: 2014 DOI: 10.1088/0004-637X/783/2/143
Parker Data Used; acceleration of particles; magnetic reconnection; Sun: corona; turbulence; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
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| 2013 |
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Stochastic Heating, Differential Flow, and the Alpha-to-proton Temperature Ratio in the Solar Wind
Chandran, B.~D.~G.; Verscharen, D.; Quataert, E.; Kasper, J.~C.; Isenberg, P.~A.; Bourouaine, S.;
Published by: \apj Published on: 10/2013
YEAR: 2013 DOI: 10.1088/0004-637X/776/1/45
Parker Data Used; plasmas; Solar wind; Sun: corona; turbulence; waves; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics
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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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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 |
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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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| 2011 |
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CORONAL PLUMES IN THE FAST SOLAR WIND
The expansion of a coronal hole filled with a discrete number of higher density coronal plumes is simulated using a time-dependent two-dimensional code. A solar wind model including an exponential coronal heating function and a flux of Alfv\ en waves propagating both inside and outside the structures is taken as a basic state. Different plasma plume profiles are obtained by using different scale heights for the heating rates. Remote sensing and solar wind in situ observations are used to constrain the parameter range of t ...
Velli, Marco; Lionello, Roberto; Linker, Jon; c, Zoran;
Published by: The Astrophysical Journal Published on: 07/2011
YEAR: 2011 DOI: 10.1088/0004-637X/736/1/32
parker solar probe; Solar Probe Plus; Solar wind; Sun: corona; Sun: heliosphere
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