270 citations · 1.8k across the 35 of their papers we have counts for
15 papers · 1 filter
Reflection-driven turbulence in the super-Alfvénic solar wind
Romain Meyrand, Jonathan Squire, Alfred Mallet +1
In magnetized, stratified astrophysical environments such as the Sun's corona and solar wind, Alfvénic fluctuations ''reflect'' from background gradients, enabling nonlinear intera…
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…
On the construction of general large-amplitude spherically polarised Alfvén waves
Jonathan Squire, Alfred Mallet
In a magnetised plasma on scales well above ion kinetic scales, any constant-magnitude magnetic field, accompanied by parallel Alfvénic flows, forms a nonlinear solution in an isob…
On the properties of Alfvénic switchbacks in the expanding solar wind: the influence of the Parker spiral
Jonathan Squire, Zade Johnston, Alfred Mallet +1
Switchbacks -- rapid, large deflections of the solar wind's magnetic field -- have generated significant interest as possible signatures of the key mechanisms that heat the corona…
On the properties of Alfvénic switchbacks in the expanding solar wind: three-dimensional numerical simulations
Zade Johnston, Jonathan Squire, Alfred Mallet +1
Switchbacks -- abrupt reversals of the magnetic field within the solar wind -- have been ubiquitously observed by Parker Solar Probe (PSP). Their origin, whether from processes nea…
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…
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…
Inner-Heliosphere Signatures of Ion-Scale Dissipation and Nonlinear Interaction
Trevor A. Bowen, Alfred Mallet, Stuart D. Bale +19
We perform a statistical study of the turbulent power spectrum at inertial and kinetic scales observed during the first perihelion encounter of Parker Solar Probe. We find that oft…
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…
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).…
Impact of Residual Energy on Solar Wind Turbulent Spectra
Trevor A. Bowen, Alfred Mallet, John W. Bonnell +1
It is widely reported that the power spectra of magnetic field and velocity fluctuations in the solar wind have power law scalings with inertial-range spectral indices of -5/3 and…
Disruption of sheetlike structures in Alfvénic turbulence by magnetic reconnection
A. Mallet, A. A. Schekochihin, B. D. G. Chandran
We propose a mechanism whereby the intense, sheet-like structures naturally formed by dynamically aligning Alfvénic turbulence are destroyed by magnetic reconnection at a scale $\h…
On the Conservation of Cross Helicity and Wave Action in Solar-Wind Models with Non-WKB Alfven Wave Reflection
Benjamin D. G. Chandran, Jean C. Perez, Daniel Verscharen +2
The interaction between Alfven-wave turbulence and the background solar wind affects the cross helicity in two ways. Non-WKB reflection converts outward-propagating Alfven waves in…
Refined critical balance in strong Alfvenic turbulence
A. Mallet, A. A. Schekochihin, B. D. G. Chandran
We present numerical evidence that in strong Alfvenic turbulence, the critical balance principle---equality of the nonlinear decorrelation and linear propagation times---is scale i…
Intermittency and Alignment in Strong RMHD Turbulence
Benjamin D. G. Chandran, Alexander A. Schekochihin, Alfred Mallet
We develop an analytic model of intermittent, three-dimensional, strong, reduced magnetohydrodynamic turbulence with zero cross helicity. We take the fluctuation amplitudes to have…