110 citations · 484 across the 21 of their papers we have counts for
7 papers · 1 filter
Twisted coronal loops in uniform gravity
G. J. D. Petrie
Coronal loop emission profiles are often of remarkably constant width along their entire lengths, contradicting expectations based on model coronal magnetic field strengths decreas…
Potential Magnetic Field around a Helical Flux-rope Current Structure in the Solar Corona
G. J. D. Petrie
We consider the potential magnetic field associated with a helical electric line current flow, idealizing the near-potential coronal field within which a highly localized twisted c…
Coronal loop widths and pressure scale heights
Gordon Petrie
The scale heights of stratification and the widths of steady solar coronal loops exhibit properties unexplained by standard theory: observed scale heights are often much greater th…
A solar active region loop compared with a 2D MHD model
C. Gontikakis, G. J. D. Petrie, H. C. Dara +1
We analyzed a coronal loop observed with the Normal Incidence Spectrometer (NIS), which is part of the Coronal Diagnostic Spectrometer (CDS) on board the Solar and Heliospheric Obs…
Compressible 2D MHD modelling of prominence dips
G. J. D. Petrie, K. Tsinganos, T. Neukirch
An analytical MHD model of a normal-polarity prominence with compressible flow is presented. The exact solution is constructed via a systematic nonlinear separation of variables me…
2D MHD modelling of compressible and heated coronal loops obtained via nonlinear separation of variables and compared to TRACE and SoHO observations
G. J. D. Petrie, C. Gontikakis, H. Dara +2
An analytical MHD model of coronal loops with compressible flows and including heating is compared to observational data. The model is constructed via a systematic nonlinear separa…
Systematic Construction of Exact 2-D MHD Equilibria with Steady, Compressible Flow in Cartesian Geometry and Uniform Gravity
Gordon Petrie, Nektarios Vlahakis, Kanaris Tsinganos
We present a systematic method for constructing two-dimensional magnetohydrodynamic equilibria with compressible flow in Cartesian geometry. This systematic method has already been…