Outputs (47)

Dynamic topology and flux rope evolution during non-linear tearing of 3D null point current sheets (2014)
Journal Article
Wyper, P., & Pontin, D. (2014). Dynamic topology and flux rope evolution during non-linear tearing of 3D null point current sheets. Physics of Plasmas, 21(10), Article 102102. https://doi.org/10.1063/1.4896060

In this work, the dynamic magnetic field within a tearing-unstable three-dimensional current sheet about a magnetic null point is described in detail. We focus on the evolution of the magnetic null points and flux ropes that are formed during the tea... Read More about Dynamic topology and flux rope evolution during non-linear tearing of 3D null point current sheets.

Non-linear tearing of 3D null point current sheets (2014)
Journal Article
Wyper, P., & Pontin, D. (2014). Non-linear tearing of 3D null point current sheets. Physics of Plasmas, 21(8), Article 082114. https://doi.org/10.1063/1.4893149

The manner in which the rate of magnetic reconnection scales with the Lundquist number in realistic three-dimensional (3D) geometries is still an unsolved problem. It has been demonstrated that in 2D rapid non-linear tearing allows the reconnection r... Read More about Non-linear tearing of 3D null point current sheets.

Reconnection at three dimensional magnetic null points: Effect of current sheet asymmetry (2013)
Journal Article
Wyper, P., & Jain, R. (2013). Reconnection at three dimensional magnetic null points: Effect of current sheet asymmetry. Physics of Plasmas, 20(5), Article 052901. https://doi.org/10.1063/1.4804338

Asymmetric current sheets are likely to be prevalent in both astrophysical and laboratory plasmas with complex three dimensional (3D) magnetic topologies. This work presents kinematic analytical models for spine and fan reconnection at a radially sym... Read More about Reconnection at three dimensional magnetic null points: Effect of current sheet asymmetry.

Kelvin-Helmholtz instability in a current-vortex sheet at a 3D magnetic null (2013)
Journal Article
Wyper, P., & Pontin, D. (2013). Kelvin-Helmholtz instability in a current-vortex sheet at a 3D magnetic null. Physics of Plasmas, 20(3), Article 032117. https://doi.org/10.1063/1.4798516

We report here, for the first time, an observed instability of a Kelvin-Helmholtz nature occurring in a fully three-dimensional (3D) current-vortex sheet at the fan plane of a 3D magnetic null point. The current-vortex layer forms self-consistently i... Read More about Kelvin-Helmholtz instability in a current-vortex sheet at a 3D magnetic null.

Spine-fan reconnection. The influence of temporal and spatial variation in the driver (2012)
Journal Article
Wyper, P., Jain, R., & Pontin, D. (2012). Spine-fan reconnection. The influence of temporal and spatial variation in the driver. Astronomy & Astrophysics, 545, Article A78. https://doi.org/10.1051/0004-6361/201219281

Context. From observations, the atmosphere of the Sun has been shown to be highly dynamic with perturbations of the magnetic field often lacking temporal or spatial symmetry. Despite this, studies of the spine-fan reconnection mode at 3D nulls have s... Read More about Spine-fan reconnection. The influence of temporal and spatial variation in the driver.

Torsional magnetic reconnection: The effects of localizing the non-ideal (ηJ) term (2011)
Journal Article
Wyper, P., & Jain, R. (2011). Torsional magnetic reconnection: The effects of localizing the non-ideal (ηJ) term. Journal of Plasma Physics, 77(06), 843-855. https://doi.org/10.1017/s0022377811000262

Magnetic reconnection in three dimensions (3D) is a natural extension from X-point reconnection in two dimensions. Of central importance in the 3D process is a localized non-ideal region within which the plasma and magnetic field decouple allowing fo... Read More about Torsional magnetic reconnection: The effects of localizing the non-ideal (ηJ) term.

Torsional magnetic reconnection at three dimensional null points: A phenomenological study (2010)
Journal Article
Wyper, P., & Jain, R. (2010). Torsional magnetic reconnection at three dimensional null points: A phenomenological study. Physics of Plasmas, 17(9), Article 092902. https://doi.org/10.1063/1.3480639

Magnetic reconnection around three dimensional (3D) magnetic null points is the natural progression from X-point reconnection in two dimensions. In 3D the separator field lines of the X-point are replaced with the spine line and fan plane (the field... Read More about Torsional magnetic reconnection at three dimensional null points: A phenomenological study.