270 citations · 2.3k across the 58 of their papers we have counts for
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Cyclotron breaking: a mechanism for parallel ion cyclotron waves to heat the fast solar wind
Evan L. Yerger, Benjamin D. G. Chandran, Vincent David +2
The () mission has observed near-continuous power in parallel ion cyclotron waves (PICWs) in the young, fast solar wind. These waves are…
Velocity-space turbulent cascade in the near-Sun solar wind: first insights from the Parker Solar Probe mission
A. Larosa, O. Pezzi, T. Bowen +11
In space plasmas, the rarity of collisions leads to complex structures in the velocity space where a turbulent cascade of the velocity distribution function fluctuations is thought…
Proton specific entropy as a proxy for the charge state ratio over heliocentric distance
Jack D. Collard, Tamar Ervin, Ryan M. Dewey +10
While the fast solar wind has well-established origins in coronal holes, the source of the slow solar wind remains uncertain. Compositional metrics, such as heavy ion charge state…
On the Propagation and Damping of Alfvenic Fluctuations in the Outer Solar Corona and Solar Wind
Nikos Sioulas, Marco Velli, Chen Shi +17
We analyze \textit{Parker Solar Probe} and \textit{Solar Orbiter} observations to investigate the propagation and dissipation of Alfvénic fluctuations from the outer corona to 1~AU…
Formation of Magnetic Switchbacks via expanding Alfvén Waves
Trevor A. Bowen, Alfred Mallet, Corina I. Dunn +8
Context. Large-amplitude inversions of the solar wind's interplanetary magnetic field have long been documented; however, observations from the Parker Solar Probe (PSP) mission hav…
Extended Cyclotron Resonant Heating of the Turbulent Solar Wind
Trevor A. Bowen, Ivan Y. Vasko, Stuart D. Bale +8
Circularly polarized, nearly parallel propagating waves are prevalent in the solar wind at ion-kinetic scales. At these scales, the spectrum of turbulent fluctuations in the solar…
Near subsonic solar wind outflow from an active region
Tamar Ervin, Stuart D. Bale, Samuel T. Badman +10
During Parker Solar Probe (Parker) Encounter 15 (E15), we observe an 18-hour period of near subsonic ( 1) and sub-Alfvénic (SA), <<< 1, slow speed…
Dominance of 2-Minute Oscillations near the Alfvén Surface
Zesen Huang, Marco Velli, Chen Shi +11
Alfvén waves, considered one of the primary candidates for heating and accelerating the fast solar wind, are ubiquitous in spacecraft observations, yet their origin remains elusive…
Resonance of low-frequency electromagnetic and ion-sound modes in the solar wind
I. Y. Vasko, F. S. Mozer, T. Bowen +6
Parker Solar Probe measurements have recently shown that coherent fast magnetosonic and Alfvén ion-cyclotron waves are abundant in the solar wind and can be accompanied by higher-f…
Proton and Alpha Driven Instabilities in an Ion Cyclotron Wave Event
Michael D. McManus, Kristopher G. Klein, Davin Larson +8
Ion scale wave events or "wave storms" in the solar wind are characterised by enhancements in magnetic field fluctuations as well as coherent magnetic field polarisation signatures…
Compositional metrics of fast and slow Alfvenic solar wind emerging from coronal holes and their boundaries
Tamar Ervin, Stuart D. Bale, Samuel T. Badman +7
We seek to understand the composition and variability of fast (FSW) and slow Alfvenic solar wind (SASW) emerging from coronal holes (CH). We leverage an opportune conjunction betwe…
Effect of Spherical Polarization on the Magnetic Spectrum of the Solar Wind
Corina Dunn, Trevor Bowen, Alfred Mallet +2
Magnetic fluctuations in the solar wind are often observed to maintain constant magnitude of the magnetic field in a manner consistent with spherically-polarized large-amplitude Al…
The Evolution of the 1/f Range Within a Single Fast-Solar-Wind Stream Between 17.4 and 45.7 Solar Radii
Nooshin Davis, B. D. G. Chandran, T. A. Bowen +7
The power spectrum of magnetic-field fluctuations in the fast solar wind ($V_{\rm SW}> 500 \mbox{ km} \mbox{ s}^{-1}$) at magnetohydrodynamic (MHD) scales is characterized by two d…
New Observations of Solar Wind 1/f Turbulence Spectrum from Parker Solar Probe
Zesen Huang, Nikos Sioulas, Chen Shi +22
The trace magnetic power spectrum in the solar wind is known to be characterized by a double power law at scales much larger than the proton gyro-radius, with flatter spectral expo…
Parker Solar Probe: Four Years of Discoveries at Solar Cycle Minimum
N. E. Raouafi, L. Matteini, J. Squire +54
Launched on 12 Aug. 2018, NASA's Parker Solar Probe had completed 13 of its scheduled 24 orbits around the Sun by Nov. 2022. The mission's primary science goal is to determine the…
Magnetic field spectral evolution in the inner heliosphere
Nikos Sioulas, Zesen Huang, Chen Shi +23
Parker Solar Probe and Solar Orbiter data are used to investigate the radial evolution of magnetic turbulence between au. The spectrum is studied as…
Magnetic field intermittency in the solar wind: PSP and SolO observations ranging from the Alfven region out to 1 AU
Nikos Sioulas, Zesen Huang, Marco Velli +17
and data are utilized to investigate magnetic field intermittency in the solar wind (SW). Small-scale intermittency is observed to radially strengthen…
Density And Velocity Fluctuations of Alpha Particles in Magnetic Switchbacks
M. D. McManus, J. L. Verniero, S. D. Bale +9
Magnetic switchbacks, or sudden reversals in the magnetic field's radial direction, are one of the more striking observations of Parker Solar Probe (PSP) thus far in its mission. W…
Kinetic-scale current sheets in near-Sun solar wind: properties, scale-dependent features and reconnection onset
A. Lotekar, I. Y. Vasko, T. Phan +6
We present statistical analysis of 11,200 proton kinetic-scale current sheets (CS) observed by Parker Solar Probe during 10 days around the first perihelion. The CS thickness i…
Statistical analysis of intermittency and its association with proton heating in the near Sun environment
Nikos Sioulas, Marco Velli, Rohit Chhiber +9
We use data from the first six encounters of Parker Solar Probe and employ the Partial Variance of Increments () method to study the statistical properties of coherent structu…
The In Situ Signature of Cyclotron Resonant Heating
Trevor A. Bowen, Benjmin D. G. Chandran, Jonathan Squire +9
The dissipation of magnetized turbulence is an important paradigm for describing heating and energy transfer in astrophysical environments such as the solar corona and wind; howeve…
Strong perpendicular velocity-space in proton beams observed by Parker Solar Probe
J. L. Verniero, B. D. G. Chandran, D. E. Larson +16
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 i…
A solar source of Alfvénic magnetic field switchbacks: {\em in situ} remnants of magnetic funnels on supergranulation scales
S. D. Bale, T. S. Horbury, M. Velli +17
One of the striking observations from the Parker Solar Probe (PSP) spacecraft is the prevalence in the inner heliosphere of large amplitude, Alfvénic magnetic field reversals terme…
Multiscale Solar Wind Turbulence Properties inside and near Switchbacks measured by Parker Solar Probe
Mihailo M. Martinović, Kristopher G. Klein, Jia Huang +9
Parker Solar Probe (PSP) routinely observes magnetic field deflections in the solar wind at distances less than 0.3 au from the Sun. These deflections are related to structures com…