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CME -Associated Energetic Ions at 0.23 AU -- Consideration of the Auroral Pressure Cooker Mechanism Operating in the Low Corona as a Possible Energization Process
D. G. Mitchell, J. Giacalone, R. C. Allen +15
We draw a comparison between a solar energetic particle event associated with the release of a slow coronal mass ejection close to the sun, and the energetic particle population pr…
Cross Helicity Reversals In Magnetic Switchbacks
Michael D. McManus, Trevor A. Bowen, Alfred Mallet +17
We consider 2D joint distributions of normalised residual energy and cross helicity during one day of Parker Solar Probe's (PSP's) first encounter as a functi…
Enhanced Energy Transfer Rate in Solar Wind Turbulence Observed near the Sun from Parker Solar Probe
Riddhi Bandyopadhyay, M. L. Goldstein, B. A. Maruca +25
Direct evidence of an inertial-range turbulent energy cascade has been provided by spacecraft observations in heliospheric plasmas. In the solar wind, the average value of the deri…
Kinetic Scale Spectral Features of Cross Helicity and Residual Energy in the Inner Heliosphere
Daniel Vech, Justin C. Kasper, Kristopher G. Klein +17
In this Paper, we present the first results from the Flux Angle operation mode of the Faraday Cup instrument onboard Parker Solar Probe. The Flux Angle mode allows rapid measuremen…
Measures of Scale Dependent Alfvénicity in the First PSP Solar Encounter
T. N. Parashar, M. L. Goldstein, B. A. Maruca +25
The solar wind shows periods of highly Alfvénic activity, where velocity fluctuations and magnetic fluctuations are aligned or anti-aligned with each other. It is generally agreed…
Switchbacks in the solar magnetic field: their evolution, their content, and their effects on the plasma, V2
F. S. Mozer1, O. V. Agapitov1, S. D. Bale1 +19
Switchbacks (rotations of the magnetic field) are observed on the Parker Solar Probe. Their evolution, content, and plasma effects are studied in this paper. The solar wind does no…
Observations of heating along intermittent structures in the inner heliosphere from PSP data
R. A. Qudsi, B. A. Maruca, W. H. Matthaeus +22
The solar wind proton temperature at 1-au has been found to be correlated with small-scale intermittent magnetic structures, i.e., regions with enhanced temperature are associated…
Clustering of Intermittent Magnetic and Flow Structures near Parker Solar Probe's First Perihelion -- A Partial-Variance-of-Increments Analysis
Rohit Chhiber, M. Goldstein, B. Maruca +23
During the Parker Solar Probe's (PSP) first perihelion pass, the spacecraft reached within a heliocentric distance of \(\sim 37~R_\odot\) and observed numerous magnetic and flow st…
Observations of the 2019 April 4 Solar Energetic Particle Event at the Parker Solar Probe
R. A. Leske, E. R. Christian, C. M. S. Cohen +33
A solar energetic particle event was detected by the Integrated Science Investigation of the Sun (ISOIS) instrument suite on Parker Solar Probe (PSP) on 2019 April 4 when the space…
Statistics and Polarization of Type III Radio Bursts Observed in the Inner Heliosphere
Marc Pulupa, Stuart D. Bale, Samuel T. Badman +20
We present initial results from the Radio Frequency Spectrometer (RFS), the high frequency component of the FIELDS experiment on the Parker Solar Probe (PSP). During the first PSP…
Magnetic field kinks and folds in the solar wind
Anna Tenerani, Marco Velli, Lorenzo Matteini +18
Parker Solar Probe (PSP) observations during its first encounter at 35.7 have shown the presence of magnetic field lines which are strongly perturbed to the point that th…
Seed Population Pre-Conditioning and Acceleration Observed by Parker Solar Probe
N. A. Schwadron, S. Bale, J. Bonnell +42
A series of solar energetic particle (SEP) events were observed at Parker Solar Probe (PSP) by the Integrated Science Investigation of the Sun (\ISOIS) during the period from April…
Switchbacks in the near-Sun magnetic field: long memory and impact on the turbulence cascade
Thierry Dudok de Wit, Vladimir V. Krasnoselskikh, Stuart D. Bale +14
One of the most striking observations made by Parker Solar Probe during its first solar encounter is the omnipresence of rapid polarity reversals in a magnetic field that is otherw…
The Enhancement of Proton Stochastic Heating in the near-Sun Solar Wind
Mihailo M. Martinović, Kristopher G. Klein, Justin C. Kasper +18
Stochastic heating is a non-linear heating mechanism driven by the violation of magnetic moment invariance due to large-amplitude turbulent fluctuations producing diffusion of ions…
The Solar Probe Cup on Parker Solar Probe
Anthony W. Case, Justin C. Kasper, Michael L. Stevens +18
The Solar Probe Cup (SPC) is a Faraday Cup instrument onboard NASA's Parker Solar Probe (PSP) spacecraft designed to make rapid measurements of thermal coronal and solar wind plasm…
Predicting the Solar Wind at Parker Solar Probe Using an Empirically Driven MHD Model
T. K. Kim, N. V. Pogorelov, C. N. Arge +20
Since the launch on 2018/08/12, Parker Solar Probe (PSP) has completed its first and second orbits around the Sun, having reached down to 35.7 solar radii at each perihelion. In an…
Turbulence Transport Modeling and First Orbit Parker Solar Probe (PSP) Observations
Laxman Adhikari, Gary P. Zank, Lingling Zhao +8
Parker Solar Probe (PSP) achieved its first orbit perihelion on November 6, 2018, reaching a heliocentric distance of about 0.165 au (35.55 R). Here, we study the evolution…
Ion Scale Electromagnetic Waves in the Inner Heliosphere
Trevor Bowen, Alfred Mallet, Jia Huang +22
Understanding the physical processes in the solar wind and corona which actively contribute to heating, acceleration, and dissipation is a primary objective of NASA's Parker Solar…
Identification of Magnetic Flux Ropes from Parker Solar Probe Observations during the First Encounter
L. -L. Zhao, G. P. Zank, L. Adhikari +17
The Parker Solar Probe (PSP) observed an interplanetary coronal mass ejection (ICME) event during its first orbit around the sun, among many other events. This event is analyzed by…
The Evolution and Role of Solar Wind Turbulence in the Inner Heliosphere
C. H. K. Chen, S. D. Bale, J. W. Bonnell +21
The first two orbits of the Parker Solar Probe (PSP) spacecraft have enabled the first in situ measurements of the solar wind down to a heliocentric distance of 0.17 au (or 36 Rs).…
Magnetic connectivity of the ecliptic plane within 0.5 AU : PFSS modeling of the first PSP encounter
Samuel T. Badman, Stuart D. Bale, Juan C. Martinez Oliveros +19
We compare magnetic field measurements taken by the FIELDS instrument on Parker Solar Probe (PSP) during its first solar encounter to predictions obtained by Potential Field Source…
Electrons in the Young Solar Wind: First Results from the Parker Solar Probe
J. S. Halekas, P. Whittlesey, D. E. Larson +14
The Solar Wind Electrons Alphas and Protons experiment on the Parker Solar Probe (PSP) mission measures the three-dimensional electron velocity distribution function. We derive the…
Energetic Particle Increases Associated with Stream Interaction Regions
C. M. S. Cohen, E. R. Christian, A. C. Cummings +34
The Parker Solar Probe was launched on 2018 August 12 and completed its second orbit on 2019 June 19 with perihelion of 35.7 solar radii. During this time, the Energetic particle I…
Plasma Waves near the Electron Cyclotron Frequency in the near-Sun Solar Wind
David M. Malaspina, Jasper Halekas, Laura Bercic +17
Data from the first two orbits of the Sun by Parker Solar Probe reveal that the solar wind sunward of 50 solar radii is replete with plasma waves and instabilities. One of the most…