PSP Bibliography





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Found 206 entries in the Bibliography.


Showing entries from 151 through 200


2016

The Solar Probe Plus Mission: Humanity\textquoterights First Visit to Our Star

Solar Probe Plus (SPP) will be the first spacecraft to fly into the low solar corona. SPP\textquoterights main science goal is to determine the structure and dynamics of the Sun\textquoterights coronal magnetic field, understand how the solar corona and wind are heated and accelerated, and determine what processes accelerate energetic particles. Understanding these fundamental phenomena has been a top-priority science goal for over five decades, dating back to the 1958 Simpson Committee Report. The scale and concept of su ...

Fox, N.; Velli, M.; Bale, S.; Decker, R.; Driesman, A.; Howard, R.; Kasper, J.; Kinnison, J.; Kusterer, M.; Lario, D.; Lockwood, M.; McComas, D.; Raouafi, N.; Szabo, A.;

Published by: Space Science Reviews      Published on: 12/2016

YEAR: 2016     DOI: 10.1007/s11214-015-0211-6

Corona; Heliophysics; NASA mission; Parker Data Used; parker solar probe; Solar Probe Plus; Solar wind; SPP

Simulations of Lateral Transport and Dropout Structure of Energetic Particles from Impulsive Solar Flares

Tooprakai, P.; Seripienlert, A.; Ruffolo, D.; Chuychai, P.; Matthaeus, W.~H.;

Published by: \apj      Published on: 11/2016

YEAR: 2016     DOI: 10.3847/0004-637X/831/2/195

Parker Data Used; magnetic fields; Solar wind; Sun: particle emission; turbulence

Propinquity of Current and Vortex Structures: Effects on Collisionless Plasma Heating

Parashar, Tulasi; Matthaeus, William;

Published by: \apj      Published on: 11/2016

YEAR: 2016     DOI: 10.3847/0004-637X/832/1/57

Parker Data Used; plasmas; Solar wind; Sun: heliosphere; turbulence; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics

Slow Solar Wind: Observations and Modeling

While it is certain that the fast solar wind originates from coronal holes, where and how the slow solar wind (SSW) is formed remains an outstanding question in solar physics even in the post-SOHO era. The quest for the SSW origin forms a major objective for the planned future missions such as the Solar Orbiter and Solar Probe Plus. Nonetheless, results from spacecraft data, combined with theoretical modeling, have helped to investigate many aspects of the SSW. Fundamental physical properties of the coronal plasma have be ...

Abbo, L.; Ofman, L.; Antiochos, S.; Hansteen, V.; Harra, L.; Ko, Y.-K.; Lapenta, G.; Li, B.; Riley, P.; Strachan, L.; von Steiger, R.; Wang, Y.-M.;

Published by: Space Science Reviews      Published on: 11/2016

YEAR: 2016     DOI: 10.1007/s11214-016-0264-1

Corona; Coronal streamers; MHD and kinetic models; parker solar probe; Solar Probe Plus; Solar wind; Sun

Fading Coronal Structure and the Onset of Turbulence in the Young Solar Wind

DeForest, C.~E.; Matthaeus, W.~H.; Viall, N.~M.; Cranmer, S.~R.;

Published by: \apj      Published on: 09/2016

YEAR: 2016     DOI: 10.3847/0004-637X/828/2/66

Parker Data Used; Solar wind; Sun: corona; Sun: fundamental parameters; techniques: image processing; Astrophysics - Solar and Stellar Astrophysics

Turbulence and Proton-Electron Heating in Kinetic Plasma

Matthaeus, William; Parashar, Tulasi; Wan, Minping; Wu, P.;

Published by: \apjl      Published on: 08/2016

YEAR: 2016     DOI: 10.3847/2041-8205/827/1/L7

Parker Data Used; galaxies: ISM; ISM: kinematics and dynamics; plasmas; solar─terrestrial relations; Solar wind; turbulence

MEASURING COLLISIONLESS DAMPING IN HELIOSPHERIC PLASMAS USING FIELD\textendashPARTICLE CORRELATIONS

An innovative field-particle correlation technique is proposed that uses single-point measurements of the electromagnetic fields and particle velocity distribution functions to investigate the net transfer of energy from fields to particles associated with the collisionless damping of turbulent fluctuations in weakly collisional plasmas, such as the solar wind. In addition to providing a direct estimate of the local rate of energy transfer between fields and particles, it provides vital new information about the distribut ...

Klein, K.; Howes, G.;

Published by: The Astrophysical Journal      Published on: 08/2016

YEAR: 2016     DOI: 10.3847/2041-8205/826/2/L30

Astrophysics - Solar and Stellar Astrophysics; parker solar probe; Physics - Plasma Physics; Physics - Space Physics; plasmas; Solar Probe Plus; Solar wind; turbulence; waves

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

Variance anisotropy in compressible 3-D MHD

Oughton, S.; Matthaeus, W.~H.; Wan, Minping; Parashar, Tulasi;

Published by: Journal of Geophysical Research (Space Physics)      Published on: 06/2016

YEAR: 2016     DOI: 10.1002/2016JA022496

Parker Data Used; Solar wind; turbulence

Variance Anisotropy in Kinetic Plasmas

Parashar, Tulasi; Oughton, Sean; Matthaeus, William; Wan, Minping;

Published by: \apj      Published on: 06/2016

YEAR: 2016     DOI: 10.3847/0004-637X/824/1/44

Parker Data Used; plasmas; Solar wind; turbulence; waves

The Digital Fields Board for the FIELDS instrument suite on the Solar Probe Plus mission: Analog and digital signal processing

The first in situ measurements of electric and magnetic fields in the near-Sun environment (\< 0.25 AU from the Sun) will be made by the FIELDS instrument suite on the Solar Probe Plus mission. The Digital Fields Board (DFB) is an electronics board within FIELDS that performs analog and digital signal processing, as well as digitization, for signals between DC and 60 kHz from five voltage sensors and four search coil magnetometer channels. These nine input signals are processed on the DFB into 26 analog data streams. A ...

Malaspina, David; Ergun, Robert; Bolton, Mary; Kien, Mark; Summers, David; Stevens, Ken; Yehle, Alan; Karlsson, Magnus; Hoxie, Vaughn; Bale, Stuart; Goetz, Keith;

Published by: Journal of Geophysical Research: Space Physics      Published on: 06/2016

YEAR: 2016     DOI: 10.1002/2016JA022344

electric and magnetic fields; instrumentation; Parker Data Used; parker solar probe; signal processing; solar probe; Solar Probe Plus; Solar wind

Local modulation and trapping of energetic particles by coherent magnetic structures

Tessein, Jeffrey; Ruffolo, David; Matthaeus, William; Wan, Minping;

Published by: \grl      Published on: 04/2016

YEAR: 2016     DOI: 10.1002/2016GL068045

Parker Data Used; Solar wind; turbulence; Energetic particles; intermittency; magnetic fields

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

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

EVOLUTION OF THE PROTON VELOCITY DISTRIBUTION DUE TO STOCHASTIC HEATING IN THE NEAR-SUN SOLAR WIND

We investigate how the proton distribution function evolves when the protons undergo stochastic heating by strong, low-frequency, Alfv\ en-wave turbulence under the assumption that β is small. We apply our analysis to protons undergoing stochastic heating in the supersonic fast solar wind and obtain proton distributions at heliocentric distances ranging from 4 to 30 solar radii. We find that the proton distribution develops non-Gaussian structure with a flat core and steep tail. For r\gt 5 RS, the proton distr ...

Klein, Kristopher; Chandran, Benjamin;

Published by: The Astrophysical Journal      Published on: 03/2016

YEAR: 2016     DOI: 10.3847/0004-637X/820/1/47

Astrophysics - Solar and Stellar Astrophysics; parker solar probe; Physics - Plasma Physics; plasmas; Solar Probe Plus; Solar wind; turbulence; waves

The Wide-Field Imager for Solar Probe Plus (WISPR)

Vourlidas, Angelos; Howard, Russell; Plunkett, Simon; Korendyke, Clarence; Thernisien, Arnaud; Wang, Dennis; Rich, Nathan; Carter, Michael; Chua, Damien; Socker, Dennis; Linton, Mark; Morrill, Jeff; Lynch, Sean; Thurn, Adam; Van Duyne, Peter; Hagood, Robert; Clifford, Greg; Grey, Phares; Velli, Marco; Liewer, Paulett; Hall, Jeffrey; DeJong, Eric; Mikic, Zoran; Rochus, Pierre; Mazy, Emanuel; Bothmer, Volker; Rodmann, Jens;

Published by: Space Science Reviews      Published on: 02/2015

YEAR: 2016     DOI: 10.1007/s11214-014-0114-y

Heliospheric imager; Imaging; Parker Data Used; Solar corona; Solar Probe Plus; Solar wind; Thomson scattering

2015

3D ELECTRON DENSITY DISTRIBUTIONS IN THE SOLAR CORONA DURING SOLAR MINIMA: ASSESSMENT FOR MORE REALISTIC SOLAR WIND MODELING

Knowledge of the electron density distribution in the solar corona put constraints on the magnetic field configurations for coronal modeling and on initial conditions for solar wind modeling. We work with polarized SOHO/LASCO-C2 images from the last two recent minima of solar activity (1996-1997 and 2008-2010), devoid of coronal mass ejections. The goals are to derive the 4D electron density distributions in the corona by applying a newly developed time-dependent tomographic reconstruction method and to compare the result ...

de Patoul, Judith; Foullon, Claire; Riley, Pete;

Published by: The Astrophysical Journal      Published on: 11/2015

YEAR: 2015     DOI: 10.1088/0004-637X/814/1/68

Astrophysics - Solar and Stellar Astrophysics; parker solar probe; Solar Probe Plus; Solar wind; Sun: corona; Sun: evolution; Sun: fundamental parameters; Sun: rotation

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

ION-SCALE TURBULENCE IN THE INNER HELIOSPHERE: RADIAL DEPENDENCE

The evolution of the ion-scale plasma turbulence in the inner heliosphere is studied by associating the plasma parameters for hybrid-code turbulence simulations to the radial distance from the Sun via a Solar wind model based mapping procedure. Using a mapping based on a one-dimensional solar wind expansion model, the resulting ion-kinetic scale turbulence is related to the solar wind distance from the Sun. For this purpose the mapping is carried out for various values of ion beta that correspond to the heliocentric dista ...

Comişel, H.; Motschmann, U.; üchner, J.; Narita, Y.; Nariyuki, Y.;

Published by: The Astrophysical Journal      Published on: 10/2015

YEAR: 2015     DOI: 10.1088/0004-637X/812/2/175

parker solar probe; plasmas; Solar Probe Plus; Solar wind; turbulence; waves

Radial Variation of the Solar Wind Proton Temperature: Heat Flow or Addition?

Scudder, J.~D.;

Published by: \apj      Published on: 08/2015

YEAR: 2015     DOI: 10.1088/0004-637X/809/2/126

Parker Data Used; conduction; equation of state; hydrodynamics; plasmas; Solar wind; waves

KINETIC EVOLUTION OF CORONAL HOLE PROTONS BY IMBALANCED ION-CYCLOTRON WAVES: IMPLICATIONS FOR MEASUREMENTS BY SOLAR PROBE PLUS

We extend the kinetic guiding-center model of collisionless coronal hole protons presented in Isenberg \& Vasquez to consider driving by imbalanced spectra of obliquely propagating ion-cyclotron waves. These waves are assumed to be a small by-product of the imbalanced turbulent cascade to high perpendicular wavenumber, and their total intensity is taken to be 1\% of the total fluctuation energy. We also extend the kinetic solutions for the proton distribution function in the resulting fast solar wind to heliocentric d ...

Isenberg, Philip; Vasquez, Bernard;

Published by: The Astrophysical Journal      Published on: 08/2015

YEAR: 2015     DOI: 10.1088/0004-637X/808/2/119

parker solar probe; plasmas; Solar Probe Plus; Solar wind; Sun: corona; turbulence; waves

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

RADIAL EVOLUTION OF A MAGNETIC CLOUD: MESSENGER , STEREO , AND VENUS EXPRESS OBSERVATIONS

The Solar Orbiter and Solar Probe Plus missions will provide observations of magnetic clouds closer to the Sun than ever before, and it will be good preparation for these missions to make full use of the most recent in situ data sets from the inner heliosphere\textemdashnamely, those provided by MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) and Venus Express\textemdashfor magnetic cloud studies. We present observations of the same magnetic cloud made by MESSENGER at Mercury and later by Solar T ...

Good, S.; Forsyth, R.; Raines, J.; Gershman, D.; Slavin, J.; Zurbuchen, T.;

Published by: The Astrophysical Journal      Published on: 07/2015

YEAR: 2015     DOI: 10.1088/0004-637X/807/2/177

magnetic fields; parker solar probe; Solar Probe Plus; Solar wind; Sun: coronal mass ejections: CMEs; Sun: heliosphere

A MODIFIED VERSION OF TAYLOR\textquoterightS HYPOTHESIS FOR SOLAR PROBE PLUS OBSERVATIONS

The Solar Probe Plus (SPP) spacecraft will explore the near-Sun environment, reaching heliocentric distances less than 10 R. Near Earth, spacecraft measurements of fluctuating velocities and magnetic fields taken in the time domain are translated into information about the spatial structure of the solar wind via Taylor\textquoterights \textquotedblleftfrozen turbulence\textquotedblright hypothesis. Near the perihelion of SPP, however, the solar-wind speed is comparable to the Alfv\ en speed, and Taylor\text ...

Klein, Kristopher; Perez, Jean; Verscharen, Daniel; Mallet, Alfred; Chandran, Benjamin;

Published by: The Astrophysical Journal      Published on: 03/2015

YEAR: 2015     DOI: 10.1088/2041-8205/801/1/L18

Astrophysics - Solar and Stellar Astrophysics; Parker Data Used; parker solar probe; Physics - Plasma Physics; Physics - Space Physics; plasmas; Solar Probe Plus; Solar wind; Sun: corona; turbulence

Statistical study of magnetic cloud erosion by magnetic reconnection

recent studies suggest that magnetic reconnection is able to erode substantial amounts of the outer magnetic flux of interplanetary magnetic clouds (MCs) as they propagate in the heliosphere. We quantify and provide a broader context to this process, starting from 263 tabulated interplanetary coronal mass ejections, including MCs, observed over a time period covering 17 years and at a distance of 1 AU from the Sun with Wind (1995-2008) and the two STEREO (2009-2012) spacecraft. Based on several quality factors, including ...

Ruffenach, A.; Lavraud, B.; Farrugia, C.; emoulin, P.; Dasso, S.; Owens, M.; Sauvaud, J.-A.; Rouillard, A.; Lynnyk, A.; Foullon, C.; Savani, N.; Luhmann, J.; Galvin, A.;

Published by: Journal of Geophysical Research: Space Physics      Published on: 01/2015

YEAR: 2015     DOI: 10.1002/2014JA020628

coronal mass ejection; magnetic cloud; magnetic flux rope; magnetic reconnection; parker solar probe; Solar Probe Plus; Solar wind

2014

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

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

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

THE VIOLATION OF THE TAYLOR HYPOTHESIS IN MEASUREMENTS OF SOLAR WIND TURBULENCE

Motivated by the upcoming Solar Orbiter and Solar Probe Plus missions, qualitative and quantitative predictions are made for the effects of the violation of the Taylor hypothesis on the magnetic energy frequency spectrum measured in the near-Sun environment. The synthetic spacecraft data method is used to predict observational signatures of the violation for critically balanced Alfv\ enic turbulence or parallel fast/whistler turbulence. The violation of the Taylor hypothesis can occur in the slow flow regime, leading to a ...

Klein, K.; Howes, G.; TenBarge, J.;

Published by: The Astrophysical Journal      Published on: 08/2014

YEAR: 2014     DOI: 10.1088/2041-8205/790/2/L20

Astrophysics - Solar and Stellar Astrophysics; parker solar probe; Physics - Plasma Physics; Physics - Space Physics; plasmas; Solar Probe Plus; Solar wind; turbulence; waves

VALIDITY OF THE TAYLOR HYPOTHESIS FOR LINEAR KINETIC WAVES IN THE WEAKLY COLLISIONAL SOLAR WIND

The interpretation of single-point spacecraft measurements of solar wind turbulence is complicated by the fact that the measurements are made in a frame of reference in relative motion with respect to the turbulent plasma. The Taylor hypothesis\textemdashthat temporal fluctuations measured by a stationary probe in a rapidly flowing fluid are dominated by the advection of spatial structures in the fluid rest frame\textemdashis often assumed to simplify the analysis. But measurements of turbulence in upcoming missions, such ...

Howes, G.; Klein, K.; TenBarge, J.;

Published by: The Astrophysical Journal      Published on: 07/2014

YEAR: 2014     DOI: 10.1088/0004-637X/789/2/106

Astrophysics - Solar and Stellar Astrophysics; parker solar probe; Physics - Plasma Physics; Solar Probe Plus; Solar wind; turbulence

Technique for measuring and correcting the Taylor microscale

Chuychai, P.; Weygand, J.~M.; Matthaeus, W.~H.; Dasso, S.; Smith, C.~W.; Kivelson, M.~G.;

Published by: Journal of Geophysical Research (Space Physics)      Published on: 06/2014

YEAR: 2014     DOI: 10.1002/2013JA019641

Parker Data Used; Solar wind; magnetic field; correlation functions

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

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

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

Coronal electron temperature in the protracted solar minimum, the cycle 24 mini maximum, and over centuries

Schwadron, N.~A.; Goelzer, M.~L.; Smith, C.~W.; Kasper, J.~C.; Korreck, K.; Leamon, R.~J.; Lepri, S.~T.; Maruca, B.~A.; McComas, D.; Steven, M.~L.;

Published by: Journal of Geophysical Research (Space Physics)      Published on: 03/2014

YEAR: 2014     DOI: 10.1002/2013JA019397

Parker Data Used; Solar wind

Proton Kinetic Effects in Vlasov and Solar Wind Turbulence

Servidio, S.; Osman, K.~T.; Valentini, F.; Perrone, D.; Califano, F.; Chapman, S.; Matthaeus, W.~H.; Veltri, P.;

Published by: \apjl      Published on: 02/2014

YEAR: 2014     DOI: 10.1088/2041-8205/781/2/L27

Parker Data Used; magnetic fields; plasmas; Solar wind; turbulence; Physics - Space Physics

An analysis of Alfv\ en radius based on sunspot number from 1749 to today

The Solar Probe Plus mission now under construction will provide the first in situ measurements from inside the orbit of Mercury. The most critical part of that mission will be measurements from inside the Alfv\ en radius where the Alfv\ en speed exceeds the wind speed and the physics of the solar wind changes fundamentally due, in part, to the multidirectionality of wave propagation. In this region waves from both sunward and antisunward of the observation point can effect the local dynamics including the turbulent evolu ...

Goelzer, Molly; Schwadron, Nathan; Smith, Charles;

Published by: Journal of Geophysical Research: Space Physics      Published on: 01/2014

YEAR: 2014     DOI: 10.1002/2013JA019420

interplanetary magnetic fields; parker solar probe; Solar Probe Plus; Solar wind; solar wind acceleration

2013

Squeezing of Particle Distributions by Expanding Magnetic Turbulence and Space Weather Variability

Ruffolo, D.; Seripienlert, A.; Tooprakai, P.; Chuychai, P.; Matthaeus, W.~H.;

Published by: \apj      Published on: 12/2013

YEAR: 2013     DOI: 10.1088/0004-637X/779/1/74

Parker Data Used; galaxies: jets; ISM: jets and outflows; magnetic fields; solar-terrestrial relations; Solar wind; turbulence

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

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

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

SPIE ProceedingsSeeing the corona with the solar probe plus mission: the wide-field imager for solar probe+ (WISPR)

Vourlidas, Angelos; Howard, Russell; Plunkett, Simon; Korendyke, Clarence; Carter, Michael; Thernisien, Arnaud; Chua, Damien; Van Duyne, Peter; Socker, Dennis; Linton, Mark; Liewer, Paulett; Hall, Jeffrey; Morrill, Jeff; DeJong, Eric; Mikic, Zoran; Rochus, Pierre; Bothmer, Volker; Rodman, Jens; Lamy, Philippe;

Published by:       Published on: 09/2013

YEAR: 2013     DOI: 10.1117/12.2027508

Heliospheric imager; Imaging; Parker Data Used; Solar corona; Solar Probe Plus; Solar wind; Thomson scattering

Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame

Weygand, James; Matthaeus, W.~H.; Kivelson, M.~G.; Dasso, S.;

Published by: Journal of Geophysical Research (Space Physics)      Published on: 07/2013

YEAR: 2013     DOI: 10.1002/jgra.50398

Parker Data Used; turbulence; Solar wind; magnetic field; Eulerian frame; decorrelation

AIP Conference ProceedingsA view from the ground: Next generation instrumentation for solar and heliospheric physics

The solar and space physics community has recently completed its second decadal survey under the auspices of the National Research Council. An integrated strategy for ground and space based studies of the Sun and space physics has been recommended, with specific recommendations made regarding new instrumentation, programs, and facilities. The ground based component of these recommendations is briefly reviewed here: the Advanced Technology Solar Telescope (ATST), the Frequency Agile Solar Radiotelescope (FASR), and the Cor ...

Bastian, T.;

Published by:       Published on: 07/2013

YEAR: 2013     DOI: 10.1063/1.4811080

95.55.Cs; 95.55.Ev; 95.55.Jz; 95.75.Hi; astronomical polarimetry; Ground-based ultraviolet optical and infrared telescopes; parker solar probe; photosphere; radioastronomy; radiotelescopes; Solar instruments; Solar Probe Plus; Solar wind

AIP Conference ProceedingsTemperature anisotropy instabilities; combining plasma and magnetic field data at different distances from the Sun

We present a new data analysis method enabling the observation of magnetic field fluctuations associated with temperature anisotropy instabilities using the Ulysses spacecraft. The movement of the spacecraft away from the Sun causes the observed plasma conditions, turbulent fluctuation amplitude, magnetic field strength and important physical scales to change. We normalize wavelet power spectra of the magnetic field using local values for the proton gyroscale and large scale magnetic field fluctuation amplitude to remove ...

Wicks, Robert; Matteini, Lorenzo; Horbury, Timothy; Hellinger, Petr; Roberts, Aaron;

Published by:       Published on: 07/2013

YEAR: 2013     DOI: 10.1063/1.4811048

96.50.Ci; 96.60.Hv; 96.60.Tf; 96.60.Vg; astrophysical plasma; data analysis; parker solar probe; plasma instability; solar magnetism; Solar Probe Plus; solar spectra; Solar wind; Solar wind plasma; sources of solar wind; wavelet transforms

Evolution of the Solar Flare Energetic Electrons in the Inhomogeneous Inner Heliosphere

Solar flare accelerated electrons escaping into the interplanetary space and seen as type III solar radio bursts are often detected near the Earth. Using numerical simulations we consider the evolution of energetic electron spectrum in the inner heliosphere and near the Earth. The role of Langmuir wave generation, heliospheric plasma density fluctuations, and expansion of magnetic field lines on the electron peak flux and fluence spectra is studied to predict the electron properties as could be observed by Solar Orbiter a ...

Reid, Hamish; Kontar, Eduard;

Published by: Solar Physics      Published on: 07/2013

YEAR: 2013     DOI: 10.1007/s11207-012-0013-x

Astrophysics - Solar and Stellar Astrophysics; dynamics; Energetic particles; flares; parker solar probe; plasma; propagation; Radio bursts; Solar Probe Plus; Solar wind; type III; waves

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

Coherent structures, intermittent turbulence, and dissipation in high-temperature plasmas

Karimabadi, H.; Roytershteyn, V.; Wan, M.; Matthaeus, W.~H.; Daughton, W.; Wu, P.; Shay, M.; Loring, B.; Borovsky, J.; Leonardis, E.; Chapman, S.~C.; Nakamura, T.~K.~M.;

Published by: Physics of Plasmas      Published on: 01/2013

YEAR: 2013     DOI: 10.1063/1.4773205

Parker Data Used; astrophysical plasma; plasma Alfven waves; plasma kinetic theory; plasma simulation; plasma temperature; plasma transport processes; plasma turbulence; Solar wind; 52.35.Ra; 94.05.Lk; 94.05.Pt; 52.25.Dg; 52.25.Fi; 52.35.Bj; plasma turbulence; turbulence; Wave/wave wave/particle interactions; Plasma kinetic equations; Transport properties; Magnetohydrodynamic waves

Solar Probe Plus: A mission to touch the sun

Solar Probe Plus (SPP), currently in Phase B, will be the first mission to fly into the low solar corona, revealing how the corona is heated and the solar wind is accelerated, solving two fundamental mysteries that have been top priority science goals since such a mission was first proposed in 1958. The scale and concept of such a mission has been revised at intervals since that time, yet the core has always been a close encounter with the Sun. SPP uses an innovative mission design, significant technology development and a r ...

Kinnison, James; Lockwood, Mary; Fox, Nicola; Conde, Richard; Driesman, Andrew;

Published by: IEEE Aerospace Conference Proceedings      Published on:

YEAR: 2013     DOI:

Commerce; magnetic fields; Solar wind; Parker Engineering

Technology development for the solar probe plus faraday cup

The upcoming Solar Probe Plus (SPP) mission requires novel approaches for in-situ plasma instrument design. SPP s Solar Probe Cup (SPC) instrument will, as part of the Solar Wind Electrons, Alphas, and Protons (SWEAP) instrument suite, operate over an enormous range of temperatures, yet must still accurately measure currents below 1 pico-amp, and with modest power requirements. This paper discusses some of the key technology development aspects of the SPC, a Faraday Cup and one of the few instruments on SPP that is directly ...

Freeman, Mark; Kasper, Justin; Case, Anthony; Daigneau, Peter; Gauron, Thomas; Bookbinder, Jay; Brodu, Etienne; Balat-Pichelin, Marianne; Wright, Kenneth;

Published by: Proceedings of SPIE - The International Society for Optical Engineering      Published on:

YEAR: 2013     DOI:

plasmas; Solar wind; Parker Engineering



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