57 citations · 257 across the 16 of their papers we have counts for
16 papers
A detailed investigation of particle energisation mechanisms in models of collapsing magnetic traps
Kate Mowbray, Thomas Neukirch, James Threlfall
In this paper we provide a detailed investigation of the energisation processes in two-dimensional, two and a half-dimensional and three-dimensional collapsing magnetic trap models…
Can Multi-Threaded Flux Tubes in Coronal Arcades Support a Magnetohydrodynamic Avalanche?
James Threlfall, Jack Reid, Alan Hood
Magnetohydrodynamic (MHD) instabilities allow energy to be released from stressed magnetic fields, commonly modelled in cylindrical flux tubes linking parallel planes, but, more re…
Particle acceleration with anomalous pitch angle scattering in 3D separator reconnection
Alexei Borissov, Thomas Neukirch, Eduard Kontar +2
Understanding how the release of stored magnetic energy contributes to the generation of non-thermal high energy particles during solar flares is an important open problem in solar…
Flux Rope Formation Due to Shearing and Zipper Reconnection
J. Threlfall, A. W. Hood, E. R. Priest
Zipper reconnection has been proposed as a mechanism for creating most of the twist in the flux tubes that are present prior to eruptive flares and coronal mass ejections. We have…
Flare particle acceleration in the interaction of twisted coronal flux ropes
J. Threlfall, A. W. Hood, P. K. Browning
The aim of this work is to investigate and characterise non-thermal particle behaviour in a three-dimensional (3D) magnetohydrodynamical (MHD) model of unstable multi-threaded flar…
Particle acceleration with anomalous pitch angle scattering in 2D MHD reconnection simulations
Alexei Borissov, Eduard P. Kontar, James Threlfall +1
The conversion of magnetic energy into other forms during solar flares is one of the outstanding open problems in solar physics. It is generally accepted that magnetic reconnection…
Particle Acceleration in Collapsing Magnetic Traps with a Braking Plasma Jet
Alexei Borissov, Thomas Neukirch, James Threlfall
Collapsing magnetic traps (CMTs) are one proposed mechanism for generating non-thermal particle populations in solar flares. CMTs occur if an initially stretched magnetic field str…
Particle acceleration at reconnecting separator current layers
J. Threlfall, J. E. H. Stevenson, C. E. Parnell +1
The aim of this work is to investigate and characterise particle behaviour in a 3D magnetohydrodynamic (MHD) model of a reconnecting magnetic separator. We use a relativistic guidi…
Particle dynamics in a non-flaring solar active region model
J. Threlfall, Ph. -A. Bourdin, T. Neukirch +1
The aim of this work is to investigate and characterise particle behaviour in an (observationally-driven) 3D MHD model of the solar atmosphere above a slowly evolving, non-flaring…
Is Magnetic Topology Important for Heating the Solar Atmosphere?
C. E. Parnell, J. E. H. Stevenson, J. Threlfall +1
Magnetic fields permeate the entire solar atmosphere weaving an extremely complex pattern on both local and global scales. In order to understand the nature of this tangled web of…
Statistical Evidence for the Existence of Alfvénic Turbulence in Solar Coronal Loops
Jiajia Liu, Scott W. McIntosh, Ineke De Moortel +2
Recent observations have demonstrated that waves which are capable of carrying large amounts of energy are ubiquitous throughout the solar corona. However, the question of how this…
Particle acceleration at a reconnecting magnetic separator
J. Threlfall, T. Neukirch, C. E. Parnell +1
While the exact acceleration mechanism of energetic particles during solar flares is (as yet) unknown, magnetic reconnection plays a key role both in the release of stored magnetic…
The Evolving Magnetic Scales of the Outer Solar Atmosphere and Their Potential Impact on Heliospheric Turbulence
Scott W. McIntosh, Christian Bethge, James Threlfall +3
The presence of turbulent phenomena in the outer solar atmosphere is a given. However, because we are reduced to remotely sensing the atmosphere of a star with instruments of limit…
First comparison of wave observations from CoMP and AIA/SDO
J. Threlfall, I. De Moortel, S. W. McIntosh +1
Waves have long been thought to contribute to the heating of the solar corona and the generation of the solar wind. Recent observations have demonstrated evidence of quasi-periodic…
Nonlinear wave propagation and reconnection at magnetic X-points in the Hall MHD regime
J. W. Threlfall, C. E. Parnell, I. De Moortel +2
The highly dynamical, complex nature of the solar atmosphere naturally implies the presence of waves in a topologically varied magnetic environment. Here, the interaction of waves…
Alfvèn wave phase-mixing and damping in the ion cyclotron range of frequencies
J. W. Threlfall, K. G. McClements, I. De Moortel
Aims. To determine the effect of the Hall term in the generalised Ohm's law on the damping and phase mixing of Alfven waves in the ion cyclotron range of frequencies in uniform and…