PSP Bibliography





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Found 652 entries in the Bibliography.


Showing entries from 301 through 350


2019

Evolution of Coronal Mass Ejection Properties in the Inner Heliosphere: Prediction for the Solar Orbiter and Parker Solar Probe

The evolution of the magnetic field and plasma quantities inside a coronal mass ejection (CME) with distance are known from statistical studies using data from 1 au monitors, planetary missions, Helios, and Ulysses. This does not cover the innermost heliosphere, below 0.29 au, where no data are yet publicly available. Here, we describe the evolution of the properties of simulated CMEs in the inner heliosphere using two different initiation mechanisms. We compare the radial evolution of these properties with that found fro ...

Al-Haddad, Nada; Lugaz, No\; Poedts, Stefaan; Farrugia, Charles; Nieves-Chinchilla, Teresa; Roussev, Ilia;

Published by: The Astrophysical Journal      Published on: 10/2019

YEAR: 2019     DOI: 10.3847/1538-4357/ab4126

Astrophysics - Solar and Stellar Astrophysics; Ejecta; interplanetary magnetic fields; Interplanetary physics; parker solar probe; Solar coronal mass ejections; Solar Probe Plus

Multiple-point Modeling the Parker Spiral Configuration of the Solar Wind Magnetic Field at the Solar Maximum of Solar Cycle 24

By assuming that the solar wind flow is spherically symmetric and that the flow speed becomes constant beyond some critical distance r = R 0 (neglecting solar gravitation and acceleration by high coronal temperature), the large-scale solar wind magnetic field lines are distorted into a Parker spiral configuration, which is usually simplified to an Archimedes spiral. Using magnetic field observations near Mercury, Venus, and Earth during solar maximum of Solar Cycle 24, we statistically surveyed the Parker spira ...

Chang, Qing; Xu, Xiaojun; Xu, Qi; Zhong, Jun; Xu, Jiaying; Wang, Jing; Zhang, Tielong;

Published by: The Astrophysical Journal      Published on: 10/2019

YEAR: 2019     DOI: 10.3847/1538-4357/ab412a

parker solar probe; planets and satellites: magnetic fields; Solar Probe Plus; Solar wind; Sun: activity; Sun: magnetic fields

Reynolds Number and Intermittency in the Expanding Solar Wind: Predictions Based on Voyager Observations

The large-scale features of the solar wind are examined in order to predict small-scale features of turbulence in unexplored regions of the heliosphere. The strategy is to examine how system size, or effective Reynolds number Re, varies, and then how this quantity influences observable statistical properties, including intermittency properties of solar wind turbulence. The expectation based on similar hydrodynamics scalings is that the kurtosis, of the small-scale magnetic field increments, will increase with increasing R ...

Parashar, T.; Cuesta, M.; Matthaeus, W.;

Published by: The Astrophysical Journal      Published on: 10/2019

YEAR: 2019     DOI: 10.3847/2041-8213/ab4a82

Heliosphere; interplanetary turbulence; parker solar probe; Physics - Space Physics; Plasma astrophysics; Solar Probe Plus; Solar wind; Space plasmas

Solar Wind Temperature Isotropy

Reliable models of the solar wind in the near-Earth space environment may constrain conditions close to the Sun. This is relevant to NASA\textquoterights contemporary innerheliospheric mission Parker Solar Probe. Among the outstanding issues is how to explain the solar wind temperature isotropy. Perpendicular and parallel proton and electron temperatures near 1 AU are theoretically predicted to be unequal, but in situ observations show quasi-isotropy sufficiently below the instability threshold condition. This has not bee ...

Yoon, P.; Seough, J.; Salem, C.; Klein, K.;

Published by: Physical Review Letters      Published on: 10/2019

YEAR: 2019     DOI: 10.1103/PhysRevLett.123.145101

parker solar probe; Solar Probe Plus

Temperature Fluctuation at the Sun and Large-scale Electric Field in Solar Wind: A Challenge for the Parker Solar Probe Mission

Velocity distributions of particles are key elements in the study of solar wind. The physical mechanisms that regulate their many features are a matter of debate. The present work addresses the subject with a fully analytical method in order to establish the shape of particle velocity distributions in solar wind. The method consists of solving the steady-state kinetic equation for particles and the related fluid equations, with spatial profiles for density and temperature that match general observational data. The model i ...

Pavan, J.; Vi\~nas, A.;

Published by: The Astrophysical Journal      Published on: 09/2019

YEAR: 2019     DOI: 10.3847/1538-4357/ab2fcd

Interplanetary particle acceleration; Kappa mechanism; Parallel field; parker solar probe; Solar coronal transients; Solar Probe Plus; Solar wind

Thermodynamics of pure fast solar wind: radial evolution of the temperature\textendashspeed relationship in the inner heliosphereABSTRACT

A strong correlation between speed and proton temperature has been observed, across many years, on hourly averaged measurements in the solar wind. Here, we show that this relationship is also observed at a smaller scale on intervals of a few days, within a single stream. Following the radial evolution of a well-defined stream of coronal-hole plasma, we show that the temperature-speed (T-V) relationship evolves with distance, implying that the T-V relationship at 1 au cannot be used as a proxy for that near the Sun. We sug ...

Perrone, Denise; Stansby, D; Horbury, T; Matteini, L;

Published by: Monthly Notices of the Royal Astronomical Society      Published on: 09/2019

YEAR: 2019     DOI: 10.1093/mnras/stz1877

parker solar probe; Solar Probe Plus; Solar wind; Sun: corona; Sun: heliosphere

Correcting Parker Solar Probe Electron Measurements for Spacecraft Magnetic and Electric Fields

The spacecraft body of the Parker Solar Probe may interfere with electron measurements in two ways. The first is the presence of several permanent magnets near the Solar Probe Analyzers (SPAN) instruments. The second is the widely varying spacecraft potential. We estimate the effect of these interferences by performing particle tracing simulations on electrons of various energies using a simplified model of the spacecraft potential and measurements of the magnetic fields. From this we can (1) estimate the individual and comb ...

McGinnis, Daniel; Halekas, Jasper; Whittlesey, Phyllis; Larson, Davin; Kasper, Justin;

Published by: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS      Published on: 09/2019

YEAR: 2019     DOI: 10.1029/2019JA026823

Parker Data Used

Reflection-driven magnetohydrodynamic turbulence in the solar atmosphere and solar wind

Chandran, Benjamin; Perez, Jean;

Published by: Journal of Plasma Physics      Published on: 08/2019

YEAR: 2019     DOI: 10.1017/S0022377819000540

Parker Data Used; astrophysical plasmas; plasma nonlinear phenomena; space plasma physics; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics

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

Role of magnetic field curvature in magnetohydrodynamic turbulence

Yang, Yan; Wan, Minping; Matthaeus, William; Shi, Yipeng; Parashar, Tulasi; Lu, Quanming; Chen, Shiyi;

Published by: Physics of Plasmas      Published on: 08/2019

YEAR: 2019     DOI: 10.1063/1.5099360

Parker Data Used; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics

On the Fast Solar Wind Heating and Acceleration Processes: A Statistical Study Based on the UVCS Survey Data

The UltraViolet Coronagraph Spectrometer (UVCS) on board the SOlar and Heliospheric Observatory has almost continuously observed, throughout the whole solar cycle 23, the UV solar corona. This work addresses the first-ever statistical analysis of the daily UVCS observations, performed in the O VI channel, of the northern polar coronal hole, between 1.5 and 3 R , during the period of low solar activity from 1996 April to 1997 December. The study is based on the investigation, at different heights, of the corr ...

Telloni, Daniele; Giordano, Silvio; Antonucci, Ester;

Published by: The Astrophysical Journal      Published on: 08/2019

YEAR: 2019     DOI: 10.3847/2041-8213/ab3731

parker solar probe; Solar corona; Solar coronal heating; Solar Probe Plus; Solar wind; The Sun

Project Lyra: Sending a spacecraft to 1I/\textquoterightOumuamua (former A/2017 U1), the interstellar asteroid

The first definitely interstellar object 1I/\textquoterightOumuamua (previously A/2017 U1) observed in our solar system provides the opportunity to directly study material from an other star system. Can such objects be intercepted? The challenge of reaching the object within a reasonable timeframe is formidable due to its high heliocentric hyperbolic excess velocity of about 26 km/s; much faster than any vehicle yet launched. This paper presents a high-level analysis of potential near-term options for a mission to 1I/\tex ...

Hein, Andreas; Perakis, Nikolaos; Eubanks, Marshall; Hibberd, Adam; Crowl, Adam; Hayward, Kieran; Kennedy, Robert; Osborne, Richard;

Published by: Acta Astronautica      Published on: 08/2019

YEAR: 2019     DOI: 10.1016/j.actaastro.2018.12.042

parker solar probe; Solar Probe Plus

Single-spacecraft Identification of Flux Tubes and Current Sheets in the Solar Wind

A novel technique is presented for describing and visualizing the local topology of the magnetic field using single-spacecraft data in the solar wind. The approach merges two established techniques: the Grad-Shafranov (GS) reconstruction method, which provides a plausible regional two-dimensional magnetic field surrounding the spacecraft trajectory, and the Partial Variance of Increments (PVI) technique that identifies coherent magnetic structures, such as current sheets. When applied to one month of Wind magnetic field d ...

Pecora, Francesco; Greco, Antonella; Hu, Qiang; Servidio, Sergio; Chasapis, Alexandros; Matthaeus, William;

Published by: The Astrophysical Journal      Published on: 08/2019

YEAR: 2019     DOI: 10.3847/2041-8213/ab32d9

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

Frontiers to be explored by the Parker Solar Probe mission

JianSen, He; Hui, Tian;

Published by: SCIENCE CHINA-TECHNOLOGICAL SCIENCES      Published on: 08/2019

YEAR: 2019     DOI: 10.1007/s11431-018-9399-9

Parker Data Used

Energy conversion in turbulent weakly collisional plasmas: Eulerian hybrid Vlasov-Maxwell simulations

Pezzi, O.; Yang, Y.; Valentini, F.; Servidio, S.; Chasapis, A.; Matthaeus, W.~H.; Veltri, P.;

Published by: Physics of Plasmas      Published on: 07/2019

YEAR: 2019     DOI: 10.1063/1.5100125

Parker Data Used; Physics - Plasma Physics; Physics - Space Physics

Particle heating and energy partition in low-\ensuremath\beta guide field reconnection with kinetic Riemann simulations

Zhang, Qile; Drake, J.~F.; Swisdak, M.;

Published by: Physics of Plasmas      Published on: 07/2019

YEAR: 2019     DOI: 10.1063/1.5104352

Parker Data Used; Physics - Plasma Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics

Electron Energy Partition across Interplanetary Shocks. I. Methodology and Data Product

Wilson, Lynn; Chen, Li-Jen; Wang, Shan; Schwartz, Steven; Turner, Drew; Stevens, Michael; Kasper, Justin; Osmane, Adnane; Caprioli, Damiano; Bale, Stuart; Pulupa, Marc; Salem, Chadi; Goodrich, Katherine;

Published by: \apjs      Published on: 07/2019

YEAR: 2019     DOI: 10.3847/1538-4365/ab22bd

Parker Data Used; methods: numerical; methods: statistical; plasmas; shock waves; Solar wind; Sun: coronal mass ejections: CMEs; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics

A laboratory model for the Parker spiral and magnetized stellar winds

Peterson, Ethan; Endrizzi, Douglass; Beidler, Matthew; Bunkers, Kyle; Clark, Michael; Egedal, Jan; Flanagan, Ken; McCollam, Karsten; Milhone, Jason; Olson, Joseph; Sovinec, Carl; Waleffe, Roger; Wallace, John; Forest, Cary;

Published by: Nature Physics      Published on: 07/2019

YEAR: 2019     DOI: 10.1038/s41567-019-0592-7

Nonlinear Evolution of Ion Kinetic Instabilities in the Solar Wind

Ofman, Leon;

Published by: \solphys      Published on: 07/2019

YEAR: 2019     DOI: 10.1007/s11207-019-1440-8

Solar wind; theory: numerical modeling; instabilities; waves; plasma; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics

Simulating White Light Images of Coronal Structures for WISPR/Parker Solar Probe: Effects of the Near-Sun Elliptical Orbit

The three-to-five-month elliptical orbit of Parker Solar Probe (PSP), approaching within 10 solar radii of the Sun, will allow the Wide-field Imager for Solar Probe (WISPR) to view the corona with unprecedented spatial resolution from multiple viewpoints. WISPR has a wide fixed angular field of view, extending from 13.5 degrees to 108 degrees from the Sun and approximately 50 degrees in the transverse direction, but the physical extent of the imaged coronal region varies directly with the distance of the spacecraft from the ...

Liewer, P.; Vourlidas, A.; Thernisien, A.; Qiu, J.; Penteado, P.; Nistico, G.; Howard, R.; Bothmer, V.;

Published by: SOLAR PHYSICS      Published on: 07/2019

YEAR: 2019     DOI: 10.1007/s11207-019-1489-4

Parker Data Used

On the Interpretation of Parker Solar Probe Turbulent Signals

In this Letter we propose a practical methodology to interpret future Parker Solar Probe (PSP) turbulent time signals even when Taylor s hypothesis is not valid. By extending Kraichnan s sweeping model used in hydrodynamics we derive the Eulerian spacetime correlation function in magnetohydrodynamic (MHD) turbulence. It is shown that in MHD, the temporal decorrelation of small-scale fluctuations arises from a combination of hydrodynamic sweeping induced by large-scale fluid velocity delta u(0) and by the Alfvenic propagation ...

Bourouaine, Sofiane; Perez, Jean;

Published by: ASTROPHYSICAL JOURNAL LETTERS      Published on: 07/2019

YEAR: 2019     DOI: 10.3847/2041-8213/ab288a

Parker Data Used

On the Origin of Ortho-Gardenhose Heliospheric Flux

Parker-spiral theory predicts that the heliospheric magnetic field (HMF) will have components of opposite polarity radially toward the Sun and tangentially antiparallel to the solar rotation direction (i.e., in Geocentric Solar Ecliptic (GSE) coordinates, with BX/BY<0). This theory explains the average orientation of the HMF very well indeed but does not predict the so-called ortho-gardenhose (hereafter OGH) flux with which is frequently observed. We here study the occurrence and structure of OGH flux, as seen in near-Earth ...

Lockwood, Mike; Owens, Mathew; Macneil, Allan;

Published by: SOLAR PHYSICS      Published on: 06/2019

YEAR: 2019     DOI: 10.1007/s11207-019-1478-7

Parker Data Used

Towards Construction of a Solar Wind Reanalysis Dataset: Application to the First Perihelion Pass of Parker Solar Probe

Accurate reconstruction of global solar-wind structure is essential for connecting remote and in situ observations of solar plasma, and hence understanding formation and release of solar wind. Information can routinely be obtained from photospheric magnetograms, via coronal and solar-wind modelling, and directly from in situ observations, typically at large heliocentric distances (most commonly near 1 AU). Magnetogram-constrained modelling has the benefit of reconstructing global solar-wind structure, but with relatively lar ...

Owens, Mathew; Lang, Matthew; Riley, Pete; Stansby, David;

Published by: SOLAR PHYSICS      Published on: 06/2019

YEAR: 2019     DOI: 10.1007/s11207-019-1479-6

Parker Data Used

Strong Preferential Ion Heating is Limited to within the Solar Alfven Surface

The decay of the solar wind helium-to-hydrogen temperature ratio due to Coulomb thermalization can be used to measure how far from the Sun strong preferential ion heating occurs. Previous work has shown that a zone of preferential ion heating, resulting in mass-proportional temperatures, extends about 20-40 R-circle dot from the Sun on average. Here we look at the motion of the outer boundary of this zone with time and compare it to other physically meaningful distances. We report that the boundary moves in lockstep with the ...

Kasper, Justin; Klein, Kristopher;

Published by: ASTROPHYSICAL JOURNAL LETTERS      Published on: 06/2019

YEAR: 2019     DOI: 10.3847/2041-8213/ab1de5

Parker Data Used

Tomography of the Solar Corona with the Wide-Field Imager for the Parker Solar Probe

The Wide-field Imager for the Parker Solar Probe (PSP/WISPR) comprises two telescopes that record white-light total brightness [B] images of the solar corona. Their fields of view cover a widely changing range of heliocentric heights over the 24 highly eccentric orbits planned for the mission. In this work, the capability of PSP/WISPR data to carry out tomographic reconstructions of the three-dimensional (3D) distribution of the coronal electron density is investigated. Based on the precise orbital information of the mission ...

Vasquez, Alberto; Frazin, Richard; Vourlidas, Angelos; Manchester, Ward; van der Holst, Bart; Howard, Russell; Lamy, Philippe;

Published by: SOLAR PHYSICS      Published on: 06/2019

YEAR: 2019     DOI: 10.1007/s11207-019-1471-1

Parker Data Used

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

Quasi Thermal Noise Spectroscopy for Van Allen Probes

Quasi thermal fluctuations in the Langmuir/upper-hybrid frequency range are pervasively observed in space plasmas including the radiation belt and the ring current region of inner magnetosphere as well as the solar wind. The quasi thermal noise spectroscopy may be employed in order to determine the electron density and temperature as well as to diagnose the properties of energetic electrons when direct measurements are not available. However, when employing the technique, one must carefully take the spacecraft orientation ...

Yoon, Peter; Hwang, Junga; Kim, Hyangpyo; Seough, Jungjoon;

Published by: Journal of Geophysical Research: Space Physics      Published on: 04/2019

YEAR: 2019     DOI: 10.1029/2019JA026460

(n + 1/2)fce; antenna geometry; parker solar probe; quasi-thermal; radiation belt; Solar Probe Plus; upper hybrid; Van Allen Probes

Combined geometrical modelling and white-light mass determination of coronal mass ejections

Pluta, Adam; Mrotzek, Niclas; Vourlidas, Angelos; Bothmer, Volker; Savani, Neel;

Published by: \aap      Published on: 03/2019

YEAR: 2019     DOI: 10.1051/0004-6361/201833829

Parker Data Used; Sun: coronal mass ejections (CMEs); solar-terrestrial relations; Sun: heliosphere; Sun: corona

Large-scale Magnetic Funnels in the Solar Corona

Panasenco, Olga; Velli, Marco; Panasenco, Aram;

Published by: \apj      Published on: 03/2019

YEAR: 2019     DOI: 10.3847/1538-4357/ab017c

Parker Data Used; Solar wind; Sun: activity; Sun: corona; Sun: coronal mass ejections: CMEs; Sun: filaments; prominences; Sun: magnetic fields

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

Dynamics of the solar wind: Eugene Parker s treatment and the laws of thermodynamics

In 1958, Eugene Parker advanced that the solar wind must be produced through the thermal expansion of coronal gas. At the time, he introduced

Robitaille, Pierre-Marie; Crothers, Stephen;

Published by: PHYSICS ESSAYS      Published on: 03/2019

YEAR: 2019     DOI: 10.4006/0836-1398-32.1.1

Parker Data Used

Whistler Fan Instability Driven by Strahl Electrons in the Solar Wind

Vasko, I.~Y.; Krasnoselskikh, V.; Tong, Y.; Bale, S.~D.; Bonnell, J.~W.; Mozer, F.~S.;

Published by: \apjl      Published on: 02/2019

YEAR: 2019     DOI: 10.3847/2041-8213/ab01bd

Parker Data Used; conduction; instabilities; plasmas; scattering; Solar wind; waves

Helios Observations of Quasiperiodic Density Structures in the Slow Solar Wind at 0.3, 0.4, and 0.6 AU

Di Matteo, S.; Viall, N.~M.; Kepko, L.; Wallace, S.; Arge, C.~N.; Macneice, P.;

Published by: Journal of Geophysical Research (Space Physics)      Published on: 02/2019

YEAR: 2019     DOI: 10.1029/2018JA026182

periodic density structures; slow solar wind formation

Generic Magnetic Field Intensity Profiles of Interplanetary Coronal Mass Ejections at Mercury, Venus, and Earth From Superposed Epoch Analyses

Janvier, Miho; Winslow, Reka; Good, Simon; Bonhomme, Elise; emoulin, Pascal; Dasso, Sergio; Möstl, Christian; Lugaz, No\; Amerstorfer, Tanja; e, Elie; Boakes, Peter;

Published by: Journal of Geophysical Research (Space Physics)      Published on: 02/2019

YEAR: 2019     DOI: 10.1029/2018JA025949

coronal mass ejections; heliospheric physics; data analysis; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics

Dissipation Scale Lengths of Solar Wind Turbulence

Raja, Sasikumar; Subramanian, Prasad; Ingale, Madhusudan; Ramesh, R.;

Published by: \apj      Published on: 02/2019

YEAR: 2019     DOI: 10.3847/1538-4357/aafd33

occultations; scattering; Solar wind; Sun: corona; turbulence; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics

Predictions for the First Parker Solar Probe Encounter

We examine Alfven Wave Solar atmosphere Model (AWSoM) predictions of the first Parker Solar Probe (PSP) encounter. We focus on the 12 day closest approach centered on the first perihelion. AWSoM allows us to interpret the PSP data in the context of coronal heating via Alfven wave turbulence. The coronal heating and acceleration is addressed via outward-propagating low-frequency Alfven waves that are partially reflected by Alfven speed gradients. The nonlinear interaction of these counter-propagating waves results in a turbul ...

van der Holst, B.; Manchester, W.; Klein, K.; Kasper, J.;

Published by: ASTROPHYSICAL JOURNAL LETTERS      Published on: 02/2019

YEAR: 2019     DOI: 10.3847/2041-8213/ab04a5

Parker Data Used

Turbulent electromagnetic fields at sub-proton scales: Two-fluid and full-kinetic plasma simulations

alez, C.~A.; Parashar, T.~N.; Gomez, D.; Matthaeus, W.~H.; Dmitruk, P.;

Published by: Physics of Plasmas      Published on: 01/2019

YEAR: 2019     DOI: 10.1063/1.5054110

Parker Data Used; Physics - Plasma Physics; Physics - Space Physics

Inherentness of Non-stationarity in Solar Wind

Jagarlamudi, Vamsee; de Wit, Thierry; Krasnoselskikh, Vladimir; Maksimovic, Milan;

Published by: \apj      Published on: 01/2019

YEAR: 2019     DOI: 10.3847/1538-4357/aaef2e

Parker Data Used; magnetic fields; Solar wind; turbulence

A computational model for exploring particle acceleration during reconnection in macroscale systems

Drake, J.~F.; Arnold, H.; Swisdak, M.; Dahlin, J.~T.;

Published by: Physics of Plasmas      Published on: 01/2019

YEAR: 2019     DOI: 10.1063/1.5058140

Parker Data Used; Astrophysics - Solar and Stellar Astrophysics; Astrophysics - High Energy Astrophysical Phenomena; Physics - Plasma Physics

Does Turbulence Turn off at the Alfv\ en Critical Surface?

The\ Parker Solar Probe\ (PSP) will eventually reach and cross the Alfv\ en point or surface as it provides us with direct in situ measurements of the solar atmosphere. The Alfv\ en surface is the location at which the large-scale bulk solar wind speed\ $\boldsymbolU$\ and the Alfv\ en speed\ $\boldsymbolV$Adhikari, L.; Zank, G.; Zhao, L.-L.;

Published by: The Astrophysical Journal      Published on: 01/2019

YEAR: 2019     DOI: 10.3847/1538-4357/ab141c

magnetohydrodynamics (MHD); parker solar probe; turbulence

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\ βp\ (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

Full inversion of solar relativistic electron events measured by the Helios spacecraft

Context. The Parker Solar Probe and the incoming Solar Orbiter mission will provide measurements of solar energetic particle (SEP) events at close heliocentric distances from the Sun. Up to present, the largest data set of SEP events in the inner heliosphere are the observations by the two Helios spacecraft.

Aims. We re-visit a sample of 15 solar relativistic electron events measured by the Helios mission with the goal of better characterising the injection histories of solar energetic particles a ...

Pacheco, D.; Agueda, N.; Aran, A.; Heber, B.; Lario, D.;

Published by: Astronomy \& Astrophysics      Published on: 01/2019

YEAR: 2019     DOI: 10.1051/0004-6361/201834520

flares; Interplanetary medium; Heliosphere; particle emission

A Laboratory Model for Magnetized Stellar Winds

Peterson, Ethan;

Published by:       Published on: 01/2019

YEAR: 2019     DOI:

Plasma physics

Observing the corona and inner heliosphere with Parker Solar Probe

The recently launched Parker Solar Probe (PSP) mission is expected to provide unprecedented views of the solar corona and inner heliosphere. In addition to instruments devoted to taking measurements of the local solar wind, the spacecraft carries a visible imager: the Wide-field Imager for Solar PRobe (WISPR). WISPR will take advantage of the proximity of the spacecraft to the Sun to perform local imaging of the near-Sun environment. WISPR will observe coronal structures at high spatial and time resolutions, although the obs ...

Nistico, G.; Bothmer, V.; Liewer, P.; Vourlidas, A.; Thernisien, A.;

Published by: NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS      Published on: 01/2019

YEAR: 2019     DOI: 10.1393/ncc/i2019-19021-2

Parker Data Used

So you Passed an Earned Value Management Government Validation - Now What?

In December 2016, The Johns Hopkins University Applied Physics Laboratory (JHU/APL) received formal acceptance from NASA that its Earned Value Management System (EVMS) complied with the Electronic Industries Alliance (EIA) Standard 748 EVMS guidelines and thus had a government validated system. JHU/APL had successfully used its EVMS for single, large missions (Van Allen Probe from January 2009 to July 2012 and Parker Solar Probe from April 2014 to August 2018), but now with an increased workload JHU/APL was faced with the ne ...

Liggett, William; Hunter, Howard; Jones, Matthew;

Published by: IEEE Aerospace Conference Proceedings      Published on:

YEAR: 2019     DOI:

Budget control; Electronics industry; Financial data processing; Investments; NASA; Probes; Parker Engineering

Designing, building, andtesting of a thermal protection systemfor a spacecraft which cannot be qualifiedusing standard methodology

This is a case study of the Thermal Protection System (TPS) currently in use on the Parker Solar Probe spacecraft, which over its seven year life it will experience surface temperatures in excess of 1400C. The traditional methodology for qualifying a space structure, using the old adage, "test what you fly and fly what you test" was simply not practical based on the selected materials, the size of the TPS, and a space environment characterized by its hard vacuumand hightemperatures. The approach to risk mitigation both in te ...

Schaefera, Edward; Congdon, Elizabeth; Conkey, Shelly;

Published by: Proceedings of the International Astronautical Congress, IAC      Published on:

YEAR: 2019     DOI:

Carbon carbon composites; Materials; Testing; Parker Engineering

Identifying and Mitigating Barriers to the Adoption of Dynamic Radioisotope Power Systems for Space Flight

Given increasing complexity of many safety-critical systems, many organizations like NASA need to identify when, where, and how inappropriate perceptions of risk and anchoring of trust affect technology development and acceptance, primarily from the perspective of engineers and related management. Using the adoption of Dynamic Radioisotope Power Systems (RPS) for space exploration as a backdrop, we define and explain factors that contribute to inappropriate risk perception of various stakeholders. Three case studies (Mars Sc ...

Brummel, Scott; Ostdiek, Paul; Woerner, Dave; Hibbard, Kenneth; Stofan, Ellen; Zakrajsek, June; Cummings, Mary;

Published by: IEEE Aerospace Conference Proceedings      Published on:

YEAR: 2019     DOI:

Budget control; Martian surface analysis; NASA; Nuclear batteries; Planning; Probes; Radioisotopes; Safety engineering; Solar energy; Space flight; Parker Engineering

Execution of Parker solar probe s unprecedented flight to the sun and early results

Parker Solar Probe (PSP) was launched on August 12, 2018, on its way to enter the solar corona and "touch" the Sun for the first time. We utilize enormous planetary gravity assists from 7 repeated Venus flybys via a V7GA trajectory in 24 solar orbits over 7 years, to get within 8.86 solar radii from the Sun s surface. The probe successfully entered the V7GA trajectory and made the first Venus flyby only 52 days after launch. Five weeks later it flew by the Sun at a perihelion distance of 0.166 AU and fl ...

Guo, Yanping; Thompson, Paul; Wirzburger, John; Pinkine, Nick; Bushman, Stewart; Goodson, Troy; Haw, Rob; Hudson, James; Jones, Drew; Kijewski, Seth; Lathrop, Brian; Lau, Eunice; Mottinger, Neil; Ryne, Mark; Shyong, Wen-Jong; Valerino, Powtawche; Whittenburg, Karl;

Published by: Proceedings of the International Astronautical Congress, IAC      Published on:

YEAR: 2019     DOI:

Interplanetary flight; Navigation; Orbits; Space flight; Parker Engineering

Parker solar probe structural-thermal analysis challenges

The NASA Parker Solar Probe spacecraft, built by the Johns Hopkins University Applied Physics Lab will fly through the outermost part of the Sun s atmosphere taking in situ measurements and imaging to improve our understanding of the corona and the solar wind. The Thermal Protection System (TPS), a 4.5-inch thick carbon-composite heat shield, limits heat transfer to the spacecraft during its flight through the Sun s atmosphere, and casts a shadow which protects the spacecraft and its instruments from the harsh thermal enviro ...

Conkey, Shelly; Congdon, Elisabeth; Schaefer, Ed; Abel, Elizabeth;

Published by: Proceedings of the International Astronautical Congress, IAC      Published on:

YEAR: 2019     DOI:

Ability testing; Carbon carbon composites; Correlation methods; Heat shielding; Heat transfer; NASA; Orbits; Probes; Software testing; Structural properties; Temperature; Test facilities; Thermoanalysis; Thermocouples; Uncertainty analysis; Parker Engineering

Case study of the parker solar probe thermal protection system: Development of a system level process for high temperature technology achievement

Successful development of high temperature systems is complex and difficult. Limitations in testing, manufacturing and materials means that design and testing of such systems is challenging. NASA s Parker Solar Probe (PSP) Spacecraft built by the Johns Hopkins Applied Physics Laboratory was launched in August 2018 and is measuring the Sun s atmosphere in situ. A critical technology development which made this mission possible is the 4.5 inch-thick Thermal Protection System (TPS) that has to withstand 2500°F and protect t ...

Congdon, Elizabeth; Mehoke, Douglas; Conkey, Shelly; Schaefer, Ed; Abel, Elisabeth;

Published by: Proceedings of the International Astronautical Congress, IAC      Published on:

YEAR: 2019     DOI:

Heat shielding; High temperature effects; High temperature engineering; Manufacture; NASA; Probes; Thermal insulating materials; Parker Engineering



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