35 citations · 188 across the 35 of their papers we have counts for
36 papers
Low-frequency Intermittency and Structures in the Solar Wind at 1 au
Jiaming Wang, Francesco Pecora, Yan Yang +1
Intermittency in the solar wind is commonly studied within the inertial and dissipative ranges, where scale-dependent magnetic field distributions become increasingly non-Gaussian…
Averaging Effects on the Solar Wind Alfven Mach Number: Implications for Switchbacks and Alfven Transition
Joshua Goodwill, Subash Adhikari, Francesco Pecora +10
Averaging techniques in solar wind measurements have been a longstanding subject of debate. Using Parker Solar Probe (PSP) observations from encounters 1 to 19, we investigate how…
Inertial-Range Energy Transfer Free from Isotropic Assumption in Turbulent Space Plasma
Zhuoran Gao, Yan Yang, Francesco Pecora +5
The idea of an energy cascade in the inertial range is often invoked in turbulent space plasmas to estimate the energy dissipation rate. Laws governing the behavior of third-order…
Noise in Synthetic and Solar Wind Data: Superposition Principles
Jiaming Wang, Francesco Pecora, Rohit Chhiber +3
The interplanetary magnetic field exhibits a distinctive spectral density from frequencies of around $\unit[10^{-6}]{Hz}$ to around $\unit[10^{-4}]{Hz}$, ranging from harmoni…
Angular dependence of third-order law in anisotropic MHD turbulence
Bin Jiang, Zhuoran Gao, Yan Yang +6
In solar wind turbulence, the energy transfer/dissipation rate is typically estimated using MHD third-order structure functions calculated using spacecraft observations. However, t…
Turbulence in the terrestrial magnetosheath: space-time correlation using the Magnetospheric Multiscale mission
Francesco Pecora, William H. Matthaeus, Antonella Greco +4
Spatiotemporal correlation of magnetic field fluctuations is investigated using the Magnetospheric Multiscale mission in the terrestrial magnetosheath. The first observation of the…
Characterization of the Trans-Alfvénic Region Using Observations from Parker Solar Probe
Subash Adhikari, Riddhi Bandyopadhyay, Joshua Goodwill +14
Close to Earth the solar wind is usually super-Alfvénic, i.e. the speed of the solar wind is much larger than the Alfvén speed. However, in the lower coronal regions, the solar win…
Estimation of Effective Viscosity to Quantify Collisional Behavior in Collisionless Plasma
Subash Adhikari, Carlos Gonzalez, Yan Yang +4
While dissipation in collisional plasma is defined in terms of viscosity and resistivity, the exact functional form of dissipation i.e., the so-called dissipation function in nearl…
Polarimeter to Unify the Corona and Heliosphere (PUNCH)
Craig E. DeForest, Sarah E. Gibson, Ronnie Killough +74
The Polarimeter to Unify the Corona and Heliosphere (PUNCH) mission is a NASA Small Explorer to determine the cross-scale processes that unify the solar corona and heliosphere. PUN…
Interplanetary magnetic correlation and low-frequency spectrum over many solar rotations
Jiaming Wang, Francesco Pecora, Rohit Chhiber +2
Fluctuations and structure across a wide range of spatial and temporal scales are frequently studied in the solar wind. The properties of the low-frequency fluctuations are of rele…
The effect of turbulence on the angular momentum of the solar wind
Rohit Chhiber, Arcadi Usmanov, William H. Matthaeus +1
The transfer of a star's angular momentum to its atmosphere is a topic of considerable and wide-ranging interest in astrophysics. This letter considers the effect of kinetic and ma…
In-situ observations of the three-dimensional energy cascade rate and Yaglom flux in the Earth's magnetosheath
Francesco Pecora
Measuring the energy cascade rate in space plasmas is a challenging task for several reasons. This quantity is (i) inherently three-dimensional (ii) scale-dependent, (iii) anisotro…
Observed Fluctuation Enhancement and Departure from WKB Theory in Sub-Alfvénic Solar Wind
David Ruffolo, Panisara Thepthong, Peera Pongkitiwanichakul +12
Using Parker Solar Probe data from orbits 8 through 17, we examine fluctuation amplitudes throughout the critical region where the solar wind flow speed approaches and then exceeds…
Noise in the Heliosphere: A Target for PUNCH Science
Jiaming Wang, William H. Matthaeus, Rohit Chhiber +4
We present a broad review of 1/f noise observations in the heliosphere, and discuss and complement the theoretical background of generic 1/f models as relevant to NASA's PUNCH miss…
Evaluation of scale-dependent kurtosis with HelioSwarm
Francesco Pecora, Francesco Pucci, Francesco Malara +4
Plasma turbulence involves complex, nonlinear interactions of electromagnetic fields and charged particles across multiple scales. Studying these phenomena in space plasmas, like t…
Parker Solar Probe Observations of Energetic Particles in the Flank of a Coronal Mass Ejection Close to the Sun
N. A. Schwadron, Stuart D. Bale, J. Bonnell +32
We present an event observed by Parker Solar Probe at 0.2 au on March 2, 2022 in which imaging and \emph{in situ} measurements coincide. During this event, PSP passed through…
The Alfvén Transition Zone observed by the Parker Solar Probe in Young Solar Wind -- Global Properties and Model Comparisons
Rohit Chhiber, Francesco Pecora, Arcadi V Usmanov +6
The transition from subAlfvénic to superAlfvénic flow in the solar atmosphere is examined by means of Parker Solar Probe (PSP) measurements during solar encounters 8 to 14. Around…
Anisotropy of Density Fluctuations in the Solar Wind at 1 au
Jiaming Wang, Rohit Chhiber, Sohom Roy +6
A well-known property of solar wind plasma turbulence is the observed anisotropy of the autocorrelations, or equivalently the spectra, of velocity and magnetic field fluctuations.…
Correlation of Coronal Mass Ejection Shock Temperature with Solar Energetic Particle Intensity
Manuel Enrique Cuesta, D. J. McComas, L. Y. Khoo +13
Solar energetic particle (SEP) events have been observed by the Parker Solar Probe (PSP) spacecraft since its launch in 2018. These events include sources from solar flares and cor…
A Closer Look at Small-Scale Magnetic Flux Ropes in the Solar Wind at 1 AU: Results from Improved Automated Detection
Hameedullah Farooki, Sung Jun Noh, Jeongwoo Lee +7
Small-scale interplanetary magnetic flux ropes (SMFRs) are similar to ICMEs in magnetic structure, but are smaller and do not exhibit ICME plasma signatures. We present a computati…
Effective Viscosity, Resistivity, and Reynolds Number in Weakly Collisional Plasma Turbulence
Yan Yang, William H. Matthaeus, Sean Oughton +6
We examine dissipation and energy conversion in weakly collisional plasma turbulence, employing in situ observations from the Magnetospheric Multiscale (MMS) mission and kinetic Pa…
The eruption of a magnetic flux rope observed by \textit{Solar Orbiter} and \textit{Parker Solar Probe}
David M. Long, Lucie M. Green, Francesco Pecora +11
Magnetic flux ropes are a key component of coronal mass ejections, forming the core of these eruptive phenomena. However, determining whether a flux rope is present prior to erupti…
Three-dimensional energy transfer in space plasma turbulence from multipoint measurement
Francesco Pecora, Sergio Servidio, Yan Yang +6
A novel multispacecraft technique applied to Magnetospheric Multiscale (MMS) mission data collected in the Earth's magnetosheath enables evaluation of the energy cascade rate solvi…
Compressible Turbulence in the Near-Sun Solar Wind: Parker Solar Probe's First Eight Perihelia
Manuel Enrique Cuesta, Rohit Chhiber, Xiangrong Fu +10
Many questions remain about the compressibility of solar wind turbulence with respect to its origins and properties. Low plasma beta (ratio of thermal to magnetic pressure) environ…