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Chirality of high-latitude filaments over Solar Cycle 23 (2012)
Journal Article
Yeates, A., & Mackay, D. (2012). Chirality of high-latitude filaments over Solar Cycle 23. Astrophysical Journal Letters, 753(2), https://doi.org/10.1088/2041-8205/753/2/l34

A non-potential quasi-static evolution model coupling the Sun's photospheric and coronal magnetic fields is applied to the problem of filament chirality at high latitudes. For the first time, we run a continuous 15 year simulation, using bipolar acti... Read More about Chirality of high-latitude filaments over Solar Cycle 23.

Heating of Braided Coronal Loops (2011)
Journal Article
Wilmot-Smith, A., Pontin, D., Yeates, A., & Hornig, G. (2011). Heating of Braided Coronal Loops. Astronomy & Astrophysics, 536, https://doi.org/10.1051/0004-6361/201117942

Aims. We investigate the relaxation of braided magnetic loops in order to find out how the type of braiding via footpoint motions affects resultant heating of the loop. Methods. Two magnetic loops, braided in different ways, are used as initial condi... Read More about Heating of Braided Coronal Loops.

A Generalized Flux Function for Three-dimensional Magnetic Reconnection (2011)
Journal Article
Yeates, A., & Hornig, G. (2011). A Generalized Flux Function for Three-dimensional Magnetic Reconnection. Physics of Plasmas, 18(10), Article 102118. https://doi.org/10.1063/1.3657424

The definition and measurement of magnetic reconnection in three-dimensional magnetic fields with multiple reconnection sites is a challenging problem, particularly in fields lacking null points. We propose a generalization of the familiar two-dimens... Read More about A Generalized Flux Function for Three-dimensional Magnetic Reconnection.

Dynamical constraints from field line topology in magnetic flux tubes (2011)
Journal Article
Yeates, A., & Hornig, G. (2011). Dynamical constraints from field line topology in magnetic flux tubes. Journal of Physics A: Mathematical and Theoretical, 44(26), https://doi.org/10.1088/1751-8113/44/26/265501

A topological constraint on the dynamics of a magnetic field in a flux tube arises from the fixed point indices of its field line mapping. This can explain unexpected behaviour in recent resistive-magnetohydrodynamic simulations of magnetic relaxatio... Read More about Dynamical constraints from field line topology in magnetic flux tubes.

A nonpotential model for the Sun's open magnetic flux (2010)
Journal Article
Yeates, A., Mackay, D., van Ballegooijen, A., & Constable, J. (2010). A nonpotential model for the Sun's open magnetic flux. Journal of Geophysical Research: Space Physics, 115(A9), https://doi.org/10.1029/2010ja015611

[1] Measurements of the interplanetary magnetic field (IMF) over several solar cycles do not agree with computed values of open magnetic flux from potential field extrapolations. The discrepancy becomes greater around solar maximum in each cycle when... Read More about A nonpotential model for the Sun's open magnetic flux.

A double-ring algorithm for modeling solar active regions: Unifying kinematic dynamo models and surface flux-transport simulations (2010)
Journal Article
Muñoz-Jaramillo, A., Nandy, D., Martens, P., & Yeates, A. (2010). A double-ring algorithm for modeling solar active regions: Unifying kinematic dynamo models and surface flux-transport simulations. Astrophysical Journal, 720(1), https://doi.org/10.1088/2041-8205/720/1/l20

The emergence of tilted bipolar active regions (ARs) and the dispersal of their flux, mediated via processes such as diffusion, differential rotation, and meridional circulation, is believed to be responsible for the reversal of the Sun's polar field... Read More about A double-ring algorithm for modeling solar active regions: Unifying kinematic dynamo models and surface flux-transport simulations.

Solar cycle variation of magnetic flux ropes in a quasi-static coronal evolution model (2010)
Journal Article
Yeates, A., Constable, J., & Martens, P. (2010). Solar cycle variation of magnetic flux ropes in a quasi-static coronal evolution model. Solar Physics, 263(1-2), 121-134. https://doi.org/10.1007/s11207-010-9546-z

The structure of electric current and magnetic helicity in the solar corona is closely linked to solar activity over the 11-year cycle, yet is poorly understood. As an alternative to traditional current-free “potential-field” extrapolations, we inves... Read More about Solar cycle variation of magnetic flux ropes in a quasi-static coronal evolution model.

Comparison of a global magnetic evolution model with observations of coronal mass ejections (2010)
Journal Article
Yeates, A., Attrill, G., Nandy, D., Mackay, D., Martens, P., & van Ballegooijen, A. (2010). Comparison of a global magnetic evolution model with observations of coronal mass ejections. Astrophysical Journal, 709(2), https://doi.org/10.1088/0004-637x/709/2/1238

The relative importance of different initiation mechanisms for coronal mass ejections (CMEs) on the Sun is uncertain. One possible mechanism is the loss of equilibrium of coronal magnetic flux ropes formed gradually by large-scale surface motions. In... Read More about Comparison of a global magnetic evolution model with observations of coronal mass ejections.

Initiation of coronal mass ejections in a global evolution model (2009)
Journal Article
Yeates, A., & Mackay, D. (2009). Initiation of coronal mass ejections in a global evolution model. Astrophysical Journal, 699(2), Article 1024-1037. https://doi.org/10.1088/0004-637x/699/2/1024

Loss of equilibrium of magnetic flux ropes is a leading candidate for the origin of solar coronal mass ejections (CMEs). The aim of this paper is to explore to what extent this mechanism can account for the initiation of CMEs in the global context. A... Read More about Initiation of coronal mass ejections in a global evolution model.