158 citations · 1.2k across the 51 of their papers we have counts for
22 papers · 1 filter
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…
A robust empirical relationship between speed and turbulence energy in the near-Earth solar wind
Rohit Chhiber, Yanwen Wang, Manuel E. Cuesta +2
The connection between turbulence and solar-wind acceleration, long known in space physics, is further developed in this Letter by establishing a robust empirical law that relates…
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…
The essential role of multi-point measurements in investigations of turbulence, three-dimensional structure, and dynamics: the solar wind beyond single scale and the Taylor Hypothesis
W. H. Matthaeus, S. Adhikari, R. Bandyopadhyay +49
Space plasmas are three-dimensional dynamic entities. Except under very special circumstances, their structure in space and their behavior in time are not related in any simple way…
Strategies for determining the cascade rate in MHD turbulence: isotropy, anisotropy, and spacecraft sampling
Yanwen Wang, Rohit Chhiber, Subash Adhikari +6
``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 co…
Intermittency in the Expanding Solar Wind: Observations from Parker Solar Probe (0.16au), Helios 1 (0.3-1au), and Voyager 1 (1-10au)
Manuel Enrique Cuesta, Tulasi N. Parashar, Rohit Chhiber +1
We examine statistics of magnetic field vector components to explore how intermittency evolves from near sun plasma to radial distances as large as 10 au. Statistics entering the a…
Sub-Alfvenic Solar Wind observed by PSP: Characterization of Turbulence, Anisotropy, Intermittency, and Switchback
R. Bandyopadhyay, W. H. Matthaeus, D. J. McComas +18
In the lower solar coronal regions where the magnetic field is dominant, the Alfven speed is much higher than the wind speed. In contrast, the near-Earth solar wind is strongly sup…
Large-scale Structure and Turbulence Transport in the Inner Solar Wind -- Comparison of Parker Solar Probe's First Five Orbits with a Global 3D Reynolds-averaged MHD Model
Rohit Chhiber, Arcadi V. Usmanov, William H. Matthaeus +1
Simulation results from a global magnetohydrodynamic model of the solar corona and solar wind are compared with Parker Solar Probe (PSP) observations during its first five orbits.…
Subproton-scale Intermittency in Near-Sun Solar Wind Turbulence Observed by the Parker Solar Probe
Rohit Chhiber, William H. Matthaeus, Trevor A. Bowen +1
High time-resolution solar wind magnetic field data is employed to study statistics describing intermittency near the first perihelion (~35.6 Rs) of the Parker Solar Probe mission.…
Random Walk and Trapping of Interplanetary Magnetic Field Lines: Global Simulation, Magnetic Connectivity, and Implications for Solar Energetic Particles
Rohit Chhiber, David Ruffolo, William H. Matthaeus +4
The random walk of magnetic field lines is an important ingredient in understanding how the connectivity of the magnetic field affects the spatial transport and diffusion of charge…
Observations of Energetic-Particle Population Enhancements along Intermittent Structures near the Sun from Parker Solar Probe
Riddhi Bandyopadhyay, W. H. Matthaeus, T. N. Parashar +31
Observations at 1 au have confirmed that enhancements in measured energetic particle fluxes are statistically associated with "rough" magnetic fields, i.e., fields having atypicall…
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…
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…
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…
[Plasma 2020 Decadal] The essential role of multi-point measurements in turbulence investigations: the solar wind beyond single scale and beyond the Taylor Hypothesis
W. H. Matthaeus, R. Bandyopadhyay, M. R. Brown +46
This paper briefly reviews a number of fundamental measurements that need to be made in order to characterize turbulence in space plasmas such as the solar wind. It has long been k…
Kinetic range spectral features of cross-helicity using MMS
Tulasi N. Parashar, Alexandros Chasapis, Riddhi Bandyopadhyay +13
We study spectral features of ion velocity and magnetic field correlations in the solar wind and in the magnetosheath using data from the Magnetospheric Multi-Scale (MMS) spacecraf…
Solar Wind Turbulence Studies using MMS Fast Plasma Investigation Data
Riddhi Bandyopadhyay, A. Chasapis, R. Chhiber +17
Studies of solar wind turbulence traditionally employ high-resolution magnetic field data, but high-resolution measurements of ion and electron moments have been possible only rece…
Incompressive Energy Transfer in the Earth's Magnetosheath: Magnetospheric Multiscale Observations
Riddhi Bandyopadhyay, A. Chasapis, R. Chhiber +14
Using observational data from the \emph{Magnetospheric Multiscale} (MMS) Mission in the Earth's magnetosheath, we estimate the energy cascade rate using different techniques within…
Cosmic Ray Diffusion Coefficients Throughout The Inner Heliosphere From Global Solar Wind Simulation
Rohit Chhiber, Prachanda Subedi, Arcadi V. Usmanov +4
We use a three-dimensional magnetohydrodynamic simulation of the solar wind to calculate cosmic ray diffusion coefficients throughout the inner heliosphere ( AU). Th…
Charged particle diffusion in isotropic random magnetic fields
Prachanda Subedi, Wirin Sonsrettee, Pasquale Blasi +8
The investigation of the diffusive transport of charged particles in a turbulent magnetic field remains a subject of considerable interest. Research has most frequently concentrate…