PSP Bibliography





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Found 14 entries in the Bibliography.


Showing entries from 1 through 14


2022

Strong Perpendicular Velocity-space Diffusion in Proton Beams Observed by Parker Solar Probe

The SWEAP instrument suite on Parker Solar Probe (PSP) has detected numerous proton beams associated with coherent, circularly polarized, ion-scale waves observed by PSP s FIELDS instrument suite. Measurements during PSP Encounters 4-8 revealed pronounced complex shapes in the proton velocity distribution functions (VDFs), in which the tip of the beam undergoes strong perpendicular diffusion, resulting in VDF level contours that resemble a hammerhead. We refer to these proton beams, with their attendant hammerhead fe ...

Verniero, J.~L.; Chandran, B.~D.~G.; Larson, D.~E.; Paulson, K.; Alterman, B.~L.; Badman, S.; Bale, S.~D.; Bonnell, J.~W.; Bowen, T.~A.; de Wit, Dudok; Kasper, J.~C.; Klein, K.~G.; Lichko, E.; Livi, R.; McManus, M.~D.; Rahmati, A.; Verscharen, D.; Walters, J.; Whittlesey, P.~L.;

Published by: \apj      Published on: jan

YEAR: 2022     DOI: 10.3847/1538-4357/ac36d5

Parker Data Used; 1544; 23; 1534; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics

Sub-Alfv\ enic Solar Wind Observed by the Parker Solar Probe: Characterization of Turbulence, Anisotropy, Intermittency, and Switchback

In the lower solar coronal regions where the magnetic field is dominant, the Alfv\ en speed is much higher than the wind speed. In contrast, the near-Earth solar wind is strongly super- Alfv\ enic, i.e., the wind speed greatly exceeds the Alfv\ en speed. The transition between these regimes is classically described as the Alfv\ en point but may in fact occur in a distributed Alfv\ en critical region. NASA s Parker Solar Probe (PSP) mission has entered this region, as it follows a series of orbits that gradually approach ...

Bandyopadhyay, R.; Matthaeus, W.~H.; McComas, D.~J.; Chhiber, R.; Usmanov, A.~V.; Huang, J.; Livi, R.; Larson, D.~E.; Kasper, J.~C.; Case, A.~W.; Stevens, M.; Whittlesey, P.; Romeo, O.~M.; Bale, S.~D.; Bonnell, J.~W.; de Wit, Dudok; Goetz, K.; Harvey, P.~R.; MacDowall, R.~J.; Malaspina, D.~M.; Pulupa, M.;

Published by: \apjl      Published on: feb

YEAR: 2022     DOI: 10.3847/2041-8213/ac4a5c

Parker Data Used; 1544; 1534; 824; 23; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics

2021

Evolution of Large-amplitude Alfv\ en Waves and Generation of Switchbacks in the Expanding Solar Wind

Motivated by recent Parker Solar Probe (PSP) observations of switchbacks (abrupt, large-amplitude reversals in the radial magnetic field, which exhibit Alfv\ enic correlations), we examine the dynamics of large-amplitude Alfv\ en waves in the expanding solar wind. We develop an analytic model that makes several predictions: switchbacks should preferentially occur in regions where the solar wind plasma has undergone a greater expansion, the switchback fraction at radii comparable to PSP should be an increasing function of ...

Mallet, Alfred; Squire, Jonathan; Chandran, Benjamin; Bowen, Trevor; Bale, Stuart;

Published by: \apj      Published on: sep

YEAR: 2021     DOI: 10.3847/1538-4357/ac0c12

Alfven waves; Magnetohydrodynamics; Solar wind; Space plasmas; 23; 1964; 1534; 1544; Parker Data Used

Evolution of Switchbacks in the Inner Heliosphere

We analyze magnetic field data from the first six encounters of Parker Solar Probe, three Helios fast streams and two Ulysses south polar passes covering heliocentric distances 0.1 \ensuremath\lesssim R \ensuremath\lesssim 3 au. We use this data set to statistically determine the evolution of switchbacks of different periods and amplitudes with distance from the Sun. We compare the radial evolution of magnetic field variances with that of the mean square amplitudes of switchbacks, and quantify the radial evolution of the cum ...

Tenerani, Anna; Sioulas, Nikos; Matteini, Lorenzo; Panasenco, Olga; Shi, Chen; Velli, Marco;

Published by: \apjl      Published on: oct

YEAR: 2021     DOI: 10.3847/2041-8213/ac2606

Parker Data Used; Heliosphere; Solar wind; interplanetary turbulence; Alfven waves; Space plasmas; 711; 1534; 830; 23; 1544; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics; Physics - Space Physics

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

Anisotropy of Solar Wind Turbulence in the Inner Heliosphere at Kinetic Scales: PSP Observations

The anisotropy of solar wind turbulence is a critical issue in understanding the physics of energy transfer between scales and energy conversion between fields and particles in the heliosphere. Using the measurement of Parker Solar Probe (PSP), we present an observation of the anisotropy at kinetic scales in the slow, Alfv\ enic, solar wind in the inner heliosphere. The magnetic compressibility behaves as expected for kinetic Alfv\ enic turbulence below the ion scale. A steepened transition range is found between the inertia ...

Duan, Die; He, Jiansen; Bowen, Trevor; Woodham, Lloyd; Wang, Tieyan; Chen, Christopher; Mallet, Alfred; Bale, Stuart;

Published by: \apjl      Published on: jul

YEAR: 2021     DOI: 10.3847/2041-8213/ac07ac

Parker Data Used; Solar wind; interplanetary turbulence; Alfven waves; 1534; 830; 23; Physics - Space Physics; Astrophysics - Solar and Stellar Astrophysics

Turbulent Generation of Magnetic Switchbacks in the Alfv\ enic Solar Wind

One of the most important early results from the Parker Solar Probe (PSP) is the ubiquitous presence of magnetic switchbacks, whose origin is under debate. Using a three-dimensional direct numerical simulation of the equations of compressible magnetohydrodynamics from the corona to 40 solar radii, we investigate whether magnetic switchbacks emerge from granulation-driven Alfv\ en waves and turbulence in the solar wind. The simulated solar wind is an Alfv\ enic slow-solar- wind stream with a radial profile consistent with var ...

Shoda, Munehito; Chandran, Benjamin; Cranmer, Steven;

Published by: \apj      Published on: jul

YEAR: 2021     DOI: 10.3847/1538-4357/abfdbc

Space plasmas; Solar wind; interplanetary turbulence; Parker Data Used; Magnetohydrodynamical simulations; Alfven waves; 1544; 1534; 830; 1966; 23; Astrophysics - Solar and Stellar Astrophysics; Physics - Plasma Physics

MHD and Ion Kinetic Waves in Field-aligned Flows Observed by Parker Solar Probe

Parker Solar Probe (PSP) observed predominately Alfv\ enic fluctuations in the solar wind near the Sun where the magnetic field tends to be radially aligned. In this paper, two magnetic- field-aligned solar wind flow intervals during PSP s first two orbits are analyzed. Observations of these intervals indicate strong signatures of parallel/antiparallel-propagating waves. We utilize multiple analysis techniques to extract the properties of the observed waves in both magnetohydrodynamic (MHD) and kinetic scales. At the MHD sca ...

Zhao, L.; Zank, G.~P.; He, J.~S.; Telloni, D.; Adhikari, L.; Nakanotani, M.; Kasper, J.~C.; Bale, S.~D.;

Published by: \apj      Published on: dec

YEAR: 2021     DOI: 10.3847/1538-4357/ac28fb

Parker Data Used; 1534; 23; 830; 824

Could Switchbacks Originate in the Lower Solar Atmosphere? II. Propagation of Switchbacks in the Solar Corona

The magnetic switchbacks observed recently by the Parker Solar Probe have raised the question about their nature and origin. One of the competing theories of their origin is the interchange reconnection in the solar corona. In this scenario, switchbacks are generated at the reconnection site between open and closed magnetic fields, and are either advected by an upflow or propagate as waves into the solar wind. In this paper we test the wave hypothesis, numerically modeling the propagation of a switchback, modeled as an embed ...

Magyar, Norbert; Utz, Dominik; Erdélyi, Robertus; Nakariakov, Valery;

Published by: The Astrophysical Journal      Published on: 06/2021

YEAR: 2021     DOI: 10.3847/1538-4357/abfa98

Solar wind; Magnetohydrodynamics; Alfven waves; Solar Coronal Waves; Nonlinear regression; 1534; 1964; 23; 1995; 1948; Astrophysics - Solar and Stellar Astrophysics; Parker Data Used

Evolution of Solar Wind Turbulence from 0.1 to 1 au during the First Parker Solar Probe-Solar Orbiter Radial Alignment

The first radial alignment between Parker Solar Probe and Solar Orbiter spacecraft is used to investigate the evolution of solar wind turbulence in the inner heliosphere. Assuming ballistic propagation, two 1.5 hr intervals are tentatively identified as providing measurements of the same plasma parcels traveling from 0.1 to 1 au. Using magnetic field measurements from both spacecraft, the properties of turbulence in the two intervals are assessed. Magnetic spectral density, flatness, and high-order moment scaling laws are ca ...

Telloni, Daniele; Sorriso-Valvo, Luca; Woodham, Lloyd; Panasenco, Olga; Velli, Marco; Carbone, Francesco; Zank, Gary; Bruno, Roberto; Perrone, Denise; Nakanotani, Masaru; Shi, Chen; Amicis, Raffaella; De Marco, Rossana; Jagarlamudi, Vamsee; Steinvall, Konrad; Marino, Raffaele; Adhikari, Laxman; Zhao, Lingling; Liang, Haoming; Tenerani, Anna; Laker, Ronan; Horbury, Timothy; Bale, Stuart; Pulupa, Marc; Malaspina, David; MacDowall, Robert; Goetz, Keith; de Wit, Thierry; Harvey, Peter; Kasper, Justin; Korreck, Kelly; Larson, Davin; Case, Anthony; Stevens, Michael; Whittlesey, Phyllis; Livi, Roberto; Owen, Christopher; Livi, Stefano; Louarn, Philippe; Antonucci, Ester; Romoli, Marco; Brien, Helen; Evans, Vincent; Angelini, Virginia;

Published by: The Astrophysical Journal      Published on: 05/2021

YEAR: 2021     DOI: 10.3847/2041-8213/abf7d1

Parker Data Used; Magnetohydrodynamics; Alfven waves; Space plasmas; interplanetary turbulence; Solar wind; 1964; 23; 1544; 830; 1534

2020

Critical Balance and the Physics of Magnetohydrodynamic Turbulence

Oughton, S.; Matthaeus, W.~H.;

Published by: \apj      Published on: 07/2020

YEAR: 2020     DOI: 10.3847/1538-4357/ab8f2a

Parker Data Used; 830; 1544; 1534; 2129; 23; 1964; Physics - Plasma Physics; Astrophysics - Solar and Stellar Astrophysics

Kinetic Scale Slow Solar Wind Turbulence in the Inner Heliosphere: Coexistence of Kinetic Alfv\ en Waves and Alfv\ en Ion Cyclotron Waves

The nature of the plasma wave modes around the ion kinetic scales in highly Alfv\ enic slow solar wind turbulence is investigated using data from the NASA\textquoterights Parker Solar Probe taken in the inner heliosphere, at 0.18 au from the Sun. The joint distribution of the normalized reduced magnetic helicity σmRB, τ) is obtained, where θRB is the angle between the local mean magnetic field and the radial direction and τ is the temporal scale. Two populations around ion scales a ...

Huang, S; Zhang, J.; Sahraoui, F.; He, J.; Yuan, Z.; es, Andr\; Hadid, L.; Deng, X.; Jiang, K.; Yu, L.; Xiong, Q; Wei, Y; Xu, S.; Bale, S.; Kasper, J.;

Published by: The Astrophysical Journal      Published on: 07/2020

YEAR: 2020     DOI: 10.3847/2041-8213/ab9abb

1261; 1534; 1544; 1693; 1873; 23; 711; 824; 830; Parker Data Used; parker solar probe; Physics - Plasma Physics; Physics - Space Physics; Solar Probe Plus

2019

No Evidence for Critical Balance in Field-aligned Alfv\ enic Solar Wind Turbulence

Telloni, Daniele; Carbone, Francesco; Bruno, Roberto; Sorriso-Valvo, Luca; Zank, Gary; Adhikari, Laxman; Hunana, Peter;

Published by: \apj      Published on: 12/2019

YEAR: 2019     DOI: 10.3847/1538-4357/ab517b

Parker Data Used; interplanetary turbulence; Solar wind; Space plasmas; Alfven waves; Interplanetary medium; Magnetohydrodynamics; 830; 1534; 1544; 23; 825; 1964

Ion Cyclotron Waves in Field-aligned Solar Wind Turbulence

Telloni, Daniele; Carbone, Francesco; Bruno, Roberto; Zank, Gary; Sorriso-Valvo, Luca; Mancuso, Salvatore;

Published by: \apjl      Published on: 11/2019

YEAR: 2019     DOI: 10.3847/2041-8213/ab4c44

Parker Data Used; Magnetohydrodynamics; Space plasmas; Solar wind; interplanetary turbulence; Alfven waves; 1964; 1544; 1534; 830; 23



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