4 papers
Direct power spectral density estimation from structure functions without Fourier transforms
Mark A. Bishop, Sean Oughton, Tulasi N. Parashar +1
Second-order structure functions and power spectral densities are popular tools in the study of statistical properties across scales, particularly for the analysis of turbulent flo…
Sub-ion scale current sheets in kinetic Alfvén wave turbulence
Johan Sharma, Ch Akshath Kumar, Kirit D. Makwana +2
3D kinetic particle-in-cell (PIC) simulations are performed using the kinetic Alfvén wave (KAW) eigenvector relations from a two-fluid model as initial conditions, in order to stu…
De-Biasing Structure Function Estimates From Sparse Time Series of the Solar Wind: A Data-Driven Approach
Daniel Wrench, Tulasi N. Parashar
Structure functions, which represent the moments of the increments of a stochastic process, are essential complementary statistics to power spectra for analysing the self-similar b…
Constraining solar wind transport model parameters using Bayesian analysis
Mark Bishop, Sean Ougthon, Tulasi Parashar +1
We apply nested-sampling (NS) Bayesian analysis [AshtonEA22] to a model for the transport of MHD-scale solar wind fluctuations. The dual objectives are to obtain improved constrain…