Outputs (44)

Numerical Simulation of Helical Jets at Active Region Peripheries (2019)
Journal Article
Wyper, P. F., DeVore, C. R., & Antiochos, S. K. (2019). Numerical Simulation of Helical Jets at Active Region Peripheries. Monthly Notices of the Royal Astronomical Society, 490(3), 3679-3690. https://doi.org/10.1093/mnras/stz2674

Coronal jets are observed above minority polarity intrusions throughout the solar corona. Some of the most energetic occur on the periphery of active regions where the magnetic field is strongly inclined. These jets exhibit a non-radial propagation i... Read More about Numerical Simulation of Helical Jets at Active Region Peripheries.

Magnetic Structures at the Boundary of the Closed Corona: A Semi-automated Study of S-Web Morphology (2019)
Journal Article
Scott, R. B., Pontin, D. I., & Wyper, P. F. (2019). Magnetic Structures at the Boundary of the Closed Corona: A Semi-automated Study of S-Web Morphology. Astrophysical Journal, 882(2), Article 125. https://doi.org/10.3847/1538-4357/ab364a

Interchange reconnection is thought to play an important role in driving the dynamics of the slow solar wind. To understand the details of this process, it is important to catalog the various magnetic structures that are present at the boundary betwe... Read More about Magnetic Structures at the Boundary of the Closed Corona: A Semi-automated Study of S-Web Morphology.

Exploring Flaring Behaviour on Low Mass Stars, Solar-type Stars and the Sun (2019)
Journal Article
Doyle, L., Ramsay, G., Doyle, J., Wyper, P., Scullion, E., Wu, K., & McLaughlin, J. (2019). Exploring Flaring Behaviour on Low Mass Stars, Solar-type Stars and the Sun. Proceedings of the International Astronomical Union, 15(S354), 384-319. https://doi.org/10.1017/s1743921319009980

We report on our project to study the activity in both the Sun and low mass stars. Utilising high cadence, Hα observations of a filament eruption made using the CRISP spectropolarimeter mounted on the Swedish Solar Telescope has allowed us to determi... Read More about Exploring Flaring Behaviour on Low Mass Stars, Solar-type Stars and the Sun.

Multiwavelength Study of Equatorial Coronal-hole Jets (2019)
Journal Article
Kumar, P., Karpen, J. T., Antiochos, S. K., Wyper, P. F., DeVore, C. R., & DeForest, C. E. (2019). Multiwavelength Study of Equatorial Coronal-hole Jets. Astrophysical Journal, 873(1), Article 93. https://doi.org/10.3847/1538-4357/ab04af

Jets (transient/collimated plasma ejections) occur frequently throughout the solar corona and contribute mass/energy to the corona and solar wind. By combining numerical simulations and high-resolution observations, we have made substantial progress... Read More about Multiwavelength Study of Equatorial Coronal-hole Jets.

Proton acceleration at tearing coronal null-point current sheets (2019)
Journal Article
Pallister, R., Pontin, D., & Wyper, P. (2019). Proton acceleration at tearing coronal null-point current sheets. Astronomy & Astrophysics, 622, Article A207. https://doi.org/10.1051/0004-6361/201834284

Context. Non-thermal particle acceleration in the solar corona is thought to constitute a substantial part of the energy budget of explosive events such as solar flares. One well-established mechanism of non-thermal acceleration is directly via field... Read More about Proton acceleration at tearing coronal null-point current sheets.

Magnetic Structures at the Boundary of the Closed Corona: Interpretation of S-Web Arcs (2018)
Journal Article
Scott, R. B., Pontin, D. I., Yeates, A. R., Wyper, P. F., & Higginson, A. K. (2018). Magnetic Structures at the Boundary of the Closed Corona: Interpretation of S-Web Arcs. Astrophysical Journal, 869(1), Article 60. https://doi.org/10.3847/1538-4357/aaed2b

The topology of coronal magnetic fields near the open-closed magnetic flux boundary is important to the the process of interchange reconnection, whereby plasma is exchanged between open and closed flux domains. Maps of the magnetic squashing factor i... Read More about Magnetic Structures at the Boundary of the Closed Corona: Interpretation of S-Web Arcs.

A Model for Coronal Hole Bright Points and Jets Due to Moving Magnetic Elements (2018)
Journal Article
Wyper, P., DeVore, C., Karpen, J., Antiochos, S., & Yeates, A. (2018). A Model for Coronal Hole Bright Points and Jets Due to Moving Magnetic Elements. Astrophysical Journal, 864(2), Article 165. https://doi.org/10.3847/1538-4357/aad9f7

Coronal jets and bright points occur prolifically in predominantly unipolar magnetic regions, such as coronal holes (CHs), where they appear above minority-polarity intrusions. Intermittent low-level reconnection and explosive, high-energy-release re... Read More about A Model for Coronal Hole Bright Points and Jets Due to Moving Magnetic Elements.

Evidence for the Magnetic Breakout Model in an Equatorial Coronal-hole Jet (2018)
Journal Article
Kumar, P., Karpen, J. T., Antiochos, S. K., Wyper, P. F., DeVore, C. R., & DeForest, C. E. (2018). Evidence for the Magnetic Breakout Model in an Equatorial Coronal-hole Jet. Astrophysical Journal, 854(2), Article 155. https://doi.org/10.3847/1538-4357/aaab4f

Small, impulsive jets commonly occur throughout the solar corona, but are especially visible in coronal holes. Evidence is mounting that jets are part of a continuum of eruptions that extends to much larger coronal mass ejections and eruptive flares.... Read More about Evidence for the Magnetic Breakout Model in an Equatorial Coronal-hole Jet.

A Breakout Model for Solar Coronal Jets with Filaments (2018)
Journal Article
Wyper, P., DeVore, C., & Antiochos, S. (2018). A Breakout Model for Solar Coronal Jets with Filaments. Astrophysical Journal, 852(2), Article 98. https://doi.org/10.3847/1538-4357/aa9ffc

Recent observations have revealed that many solar coronal jets involve the eruption of miniature versions of large-scale filaments. Such "mini-filaments" are observed to form along the polarity inversion lines of strong, magnetically bipolar regions... Read More about A Breakout Model for Solar Coronal Jets with Filaments.

The Mechanism for the Energy Buildup Driving Solar Eruptive Events (2017)
Journal Article
Knizhnik, K., Antiochos, S., DeVore, C., & Wyper, P. (2017). The Mechanism for the Energy Buildup Driving Solar Eruptive Events. Astrophysical Journal, 851(1), Article L17. https://doi.org/10.3847/2041-8213/aa9e0a

The underlying origin of solar eruptive events (SEEs), ranging from giant coronal mass ejections to small coronal-hole jets, is that the lowest-lying magnetic flux in the Sun's corona undergoes continual buildup of stress and free energy. This magnet... Read More about The Mechanism for the Energy Buildup Driving Solar Eruptive Events.