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Found 23 entries in the Bibliography.
Showing entries from 1 through 23
Energy transfer of the solar wind turbulence based on Parker solar probe and other spacecraft observations
The supersonic solar wind, first predicted by Parker and then observed by Mariners, extends to form a heliosphere around the Sun. The energy supply from the energy containing range, the energy cascade though the inertial range, and the eventual energy dissipation are three basic processes of the energy transfer in the solar wind and have been studied for a long time. However, some basic issues remain to be discovered. Here, we review the recent progress in the mechanisms of energy transfer of the solar wind turbulence from t ...
Wu, Honghong; Tu, Chuanyi; He, Jiansen; Wang, Xin; Yang, Liping;
Published by: Physics of Plasmas Published on: feb
YEAR: 2023   DOI: 10.1063/5.0121140
A Data-constrained Scheme for the Reconstruction of Solar Wind Parameters in the Inner Heliosphere
With the development of our industrial society, the reconstruction of solar wind parameters in the inner heliosphere becomes very important to understanding the interplanetary propagation of various types of space weather disturbance. However, the situ observations of solar wind parameters are only applicable to several points where spacecraft are located. Therefore, we have to rely on the numerical technologies to reconstruct the solar wind parameters. The scheme for the reconstruction of solar wind parameters can be classi ...
Zhang, Man; Feng, Xueshang; Yang, Liping; Liu, Xiaojing;
Published by: \apjs Published on: feb
YEAR: 2023   DOI: 10.3847/1538-4365/acaddc
Strategies for Determining the Cascade Rate in MHD Turbulence: Isotropy, Anisotropy, and Spacecraft Sampling
Exact laws for evaluating cascade rates, tracing back to the Kolmogorov 4/5 law, have been extended to many systems of interest including magnetohydrodynamics (MHD), and compressible flows of the magnetofluid and ordinary fluid types. It is understood that implementations may be limited by the quantity of available data and by the lack of turbulence symmetry. Assessment of the accuracy and feasibility of such third-order (or Yaglom) relations is most effectively accomplished by examining the von K\ arm\ an-Howarth equati ...
Wang, Yanwen; Chhiber, Rohit; Adhikari, Subash; Yang, Yan; Bandyopadhyay, Riddhi; Shay, Michael; Oughton, Sean; Matthaeus, William; Cuesta, Manuel;
Published by: \apj Published on: oct
YEAR: 2022   DOI: 10.3847/1538-4357/ac8f90
Parker Data Used; interplanetary turbulence; Space plasmas; Plasma physics; Magnetohydrodynamics; Magnetohydrodynamical simulations; 830; 1544; 2089; 1964; 1966; Physics - Space Physics; Physics - Fluid Dynamics; Physics - Plasma Physics
Consistency of von Karman Decay Rate with the Energy Supply Rate and Heating Rate Observed by Parker Solar Probe
The von K\ arm\ an-Howarth equations give a starting basis for the classical turbulence theory. The formula for the magnetohydrodynamics von K\ arm\ an decay rate represents an energy source in many solar wind models with turbulence as the driver. However, it still lacks the radial trend comparison between the von K\ arm\ an decay rate, the energy supply rate, and the perpendicular heating rate based on direct observations of the solar wind. Here we carry out this kind of comparison for the first time using Parker Solar Prob ...
Wu, Honghong; Tu, Chuanyi; He, Jiansen; Wang, Xin; Yang, Liping;
Published by: \apj Published on: feb
YEAR: 2022   DOI: 10.3847/1538-4357/ac4413
Solar Chromospheric Network as a Source for Solar Wind Switchbacks
Recent studies suggest that the magnetic switchbacks (SBs) detected by the Parker Solar Probe carry information on the scales of solar supergranulation (large scale) and granulation (medium scale). We test this claim using high-resolution H\ensuremath\alpha images obtained with the visible spectropolarimeters of the Goode Solar Telescope in Big Bear Solar Observatory. As possible solar sources, we count all the spicule-like features standing along the chromospheric networks near the coronal hole boundary visible in the H\ens ...
Lee, Jeongwoo; Yurchyshyn, Vasyl; Wang, Haimin; Yang, Xu; Cao, Wenda; Oliveros, Juan;
Published by: \apjl Published on: aug
YEAR: 2022   DOI: 10.3847/2041-8213/ac86bf
Parker Data Used; Solar magnetic fields; Solar chromosphere; Solar wind; interplanetary magnetic fields; 1503; 1479; 1534; 824
Nonlinear Wave-Wave Coupling Related to Whistler-mode and Electron Bernstein Waves Observed by the Parker Solar Probe
We report nonlinear wave-wave coupling related to whistler-mode or electron Bernstein waves in the near-Sun slow solar wind with Parker Solar Probe (PSP) data. Prominent plasma wave power enhancements usually exist near the electron gyrofrequency (f$_ce$), identified as electrostatic whistler-mode and electron Bernstein waves (Malaspina et al. 2020). We find that these plasma waves near f$_ce$ typically have a harmonic spectral structure and further classify them into three types identified by the characteristics of wave fre ...
Ma, Jiuqi; Gao, Xinliang; Yang, Zhongwei; Tsurutani, Bruce; Liu, Mingzhe; Lu, Quanming; Wang, Shui;
Published by: \apj Published on: sep
YEAR: 2021   DOI: 10.3847/1538-4357/ac0ef4
Solar Origin of Compressive Alfv\ enic Spikes/Kinks as Observed by Parker Solar Probe
The solar wind is found by the Parker Solar Probe to be abundant with Alfv\ enic velocity spikes and magnetic field kinks. Temperature enhancement is another remarkable feature associated with the Alfv\ enic spikes. How the prototype of these coincident phenomena is generated intermittently in the source region is an important and wide-ranging subject. Here we propose a new model introducing guide-field discontinuity into the interchange magnetic reconnection between open funnels and closed loops with different magnetic heli ...
He, Jiansen; Zhu, Xingyu; Yang, Liping; Hou, Chuanpeng; Duan, Die; Zhang, Lei; Wang, Ying;
Published by: \apjl Published on: may
YEAR: 2021   DOI: 10.3847/2041-8213/abf83d
Parker Data Used; Solar wind; Alfven waves; Solar atmosphere; Solar magnetic reconnection; 1534; 23; 1477; 1504
Magnetic and Velocity Fluctuations in the Near-Sun Region from 0.1-0.3 au Observed by Parker Solar Probe
The fluctuations observed in the slow solar wind at 1 au by the WIND spacecraft are shown by recent studies to consist of mainly magnetic-field directional turning and magnetic-velocity alignment structure (MVAS). How these structures are created has been a question because the nature of the fluctuations in the near-Sun region remains unknown. Here, we present an analysis of the measurements in the slow solar wind from 0.1-0.3 au by Parker Solar Probe during its first six orbits. We present the distributions in the $C_\mathr ...
Wu, Honghong; Tu, Chuanyi; Wang, Xin; Yang, Liping;
Published by: \apj Published on: dec
YEAR: 2021   DOI: 10.3847/1538-4357/ac3331
A Provably Positive, Divergence-free Constrained Transport Scheme for the Simulation of Solar Wind
In this paper, we present a provably positive, divergence-free constrained transport (CT) scheme to simulate the steady-state solar wind ambient with the three-dimensional magnetohydrodynamics numerical model. The positivity can be lost in two ways: one way is in the reconstruction process, and the other is in the updating process when the variables are advanced to the next time step. We adopt a self-adjusting strategy to bring the density and pressure into the permitted range in the reconstruction process, and use modified ...
Zhang, Man; Feng, Xueshang; Liu, Xiaojing; Yang, Liping;
Published by: \apjs Published on: dec
YEAR: 2021   DOI: 10.3847/1538-4365/ac1e29
Parker Data Used; Solar wind; Magnetohydrodynamical simulations; 1534; 1966
Large Amplitude Switchback Turbulence: Possible Magnetic Velocity Alignment Structures
Switchbacks are widely acknowledged phenomena observed by the Parker Solar Probe and appear to occur in patches. Previous studies focused on the fluctuations at the magnetic reversals. However, the nature of the fluctuations inside the switchbacks remains unknown. Here we utilize the magnetic field data and plasma data measured by the Parker Solar Probe in the first four encounters. We investigate the fluctuations in the switchback intervals of 100 s with $B_R 0$ at every instant and compare them to the fluctuations in the n ...
Wu, Honghong; Tu, Chuanyi; Wang, Xin; Yang, Liping;
Published by: The Astrophysical Journal Published on: 06/2021
YEAR: 2021   DOI: 10.3847/1538-4357/abec6c
Parker Data Used; Solar wind; interplanetary turbulence; 1534; 830; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics
The Encounter of the Parker Solar Probe and a Comet-like Object Near the Sun: Model Predictions and Measurements
The Parker Solar Probe (PSP) aims to explore the nascent solar wind close to the Sun. Meanwhile, PSP is also expected to encounter small objects like comets and asteroids. In this work, we survey the ephemerides to find the chance of a recent encounter and then model the interaction between released dusty plasmas and solar wind plasmas. On 2019 September 2, a comet-like object, the 322P/Solar and Heliosphere Observatory, just passed its perihelion flying to a heliocentric distance of 0.12 au and swept by PSP at a relative di ...
He, Jiansen; Cui, Bo; Yang, Liping; Hou, Chuanpeng; Zhang, Lei; Ip, Wing-Huen; Jia, Ying-Dong; Dong, Chuanfei; Duan, Die; Zong, Qiugang; Bale, Stuart; Pulupa, Marc; Bonnell, John; de Wit, Thierry; Goetz, Keith; Harvey, Peter; MacDowall, Robert; Malaspina, David;
Published by: The Astrophysical Journal Published on: 03/2021
YEAR: 2021   DOI: 10.3847/1538-4357/abdf4a
Parker Data Used; Solar wind; Comet tails; Interplanetary dust; Asteroids; 1534; 274; 821; 72; Astrophysics - Earth and Planetary Astrophysics; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
The interpretation of data from the Parker Solar Probe mission: shear-driven transition to an isotropically turbulent solar wind
The Parker Solar Probe (PSP) mission has been studied since 1958. After many iterations and changes in design, the mission was launched on August 12, 2018 (see, https://www.nasa.gov/content/goddard/parker-solar-probe). PSP has completed its 3rd rendezvous with Venus and 6th perihelion passage. Each flyby brings PSP closer to the Sun (eventually to 9.7 solar radii). In October 2020 it flew within 20 solar radii of the solar surface. A goal of the mission is to determine how the solar corona is heated to ∼ a million degrees. ...
Goldstein, Melvyn; Ruffolo, D.; Matthaeus, W.~H.; Chhiber, R.; Usmanov, A.~V.; Yang, Y.; Bandyopadhyay, R.; Parashar, T.~N.; DeForest, E.; Wan, M.; Chasapis, A.; Maruca, B.~A.; Velli, M.; Kasper, J.~C.;
Published by: Radiation Effects and Defects in Solids Published on: 11/2020
YEAR: 2020   DOI: 10.1080/10420150.2020.1845690
Energy Supply for Heating the Slow Solar Wind Observed by Parker Solar Probe between 0.17 and 0.7 au
Energy supply sources for the heating process in the slow solar wind remain unknown. The Parker Solar Probe (PSP) mission provides a good opportunity to study this issue. Recently, PSP observations have found that the slow solar wind experiences stronger heating inside 0.24 au. Here for the first time we measure in the slow solar wind the radial gradient of the low-frequency breaks on the magnetic trace power spectra and evaluate the associated energy supply rate. We find that the energy supply rate is consistent with the ob ...
Wu, Honghong; Tu, Chuanyi; Wang, Xin; He, Jiansen; Yang, Liping;
Published by: The Astrophysical Journal Published on: 11/2020
YEAR: 2020   DOI: 10.3847/2041-8213/abc5b6
Parker Data Used; Slow solar wind; interplanetary turbulence; Solar coronal heating
Shear-driven Transition to Isotropically Turbulent Solar Wind Outside the Alfv\ en Critical Zone
Motivated by prior remote observations of a transition from striated\ solar\ coronal structures to more isotropic "flocculated" fluctuations, we propose that the dynamics of the inner\ solar\ wind just outside the Alfven critical zone, and in the vicinity of the first beta = 1 surface, is powered by the relative velocities of adjacent coronal magnetic flux tubes. We suggest that large-amplitude flow contrasts are magnetically constrained at lower altitude but shear-driven dynamics are triggered as such ...
Ruffolo, D.; Matthaeus, W.; Chhiber, R.; Usmanov, A.; Yang, Y.; Bandyopadhyay, R.; Parashar, T.; Goldstein, M.; Deforest, C.; Wan, M.; Chasapis, A.; Maruca, B.; Velli, M.; Kasper, J.;
Published by: The Astrophysical Journal Published on: 10/2020
YEAR: 2020   DOI: 10.3847/1538-4357/abb594
PIC Simulations of Microinstabilities and Waves at Near-Sun Solar Wind Perpendicular Shocks: Predictions for Parker Solar Probe and Solar Orbiter
Microinstabilities and waves excited at moderate-Mach-number perpendicular shocks in the near-Sun solar wind are investigated by full particle-in-cell simulations. By analyzing the dispersion relation of fluctuating field components directly issued from the shock simulation, we obtain key findings concerning wave excitations at the shock front: (1) at the leading edge of the foot, two types of electrostatic (ES) waves are observed. The relative drift of the reflected ions versus the electrons triggers an electron cyclotro ...
Yang, Zhongwei; Liu, Ying; Matsukiyo, Shuichi; Lu, Quanming; Guo, Fan; Liu, Mingzhe; Xie, Huasheng; Gao, Xinliang; Guo, Jun;
Published by: The Astrophysical Journal Published on: 09/2020
YEAR: 2020   DOI: 10.3847/2041-8213/abaf59
Interplanetary shocks; parker solar probe; Plasma astrophysics; Plasma physics; Solar Probe Plus; Space plasmas
Pathways to Dissipation in Weakly Collisional Plasmas
Matthaeus, William; Yang, Yan; Wan, Minping; Parashar, Tulasi; Bandyopadhyay, Riddhi; Chasapis, Alexandros; Pezzi, Oreste; Valentini, Francesco;
Published by: \apj Published on: 03/2020
YEAR: 2020   DOI: 10.3847/1538-4357/ab6d6a
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
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
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
Exploring the statistics of magnetic reconnection X-points in kinetic particle-in-cell turbulence
Haggerty, C.~C.; Parashar, T.~N.; Matthaeus, W.~H.; Shay, M.~A.; Yang, Y.; Wan, M.; Wu, P.; Servidio, S.;
Published by: Physics of Plasmas Published on: 10/2017
YEAR: 2017   DOI: 10.1063/1.5001722
Energy transfer, pressure tensor, and heating of kinetic plasma
Yang, Yan; Matthaeus, William; Parashar, Tulasi; Haggerty, Colby; Roytershteyn, Vadim; Daughton, William; Wan, Minping; Shi, Yipeng; Chen, Shiyi;
Published by: Physics of Plasmas Published on: 07/2017
YEAR: 2017   DOI: 10.1063/1.4990421
Parker Data Used; Physics - Plasma Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
Energy transfer channels and turbulence cascade in Vlasov-Maxwell turbulence
Yang, Yan; Matthaeus, W.~H.; Parashar, T.~N.; Wu, P.; Wan, M.; Shi, Y.; Chen, S.; Roytershteyn, V.; Daughton, W.;
Published by: \pre Published on: 06/2017
YEAR: 2017   DOI: 10.1103/PhysRevE.95.061201
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