Dr Andrew Gascoyne is a lecturer in the School of Mathematics and Computer Science. Prior to that I worked as a postdoctoral research associate at The University of Sheffield on the STFC funded project entitled "Magnetic Features and Local Helioseismology".
Magnetohydrodynamics, Helioseismology, Solar Physics, Mathematical Modelling.
‘’Numerical solution of the 2D wave equation with Gaussian initial condition and reflecting boundary conditions.’’
Solar physics, which is the branch of astrophysics that specialises in the study of the Sun. I am focused on Helioseismology, the study of acoustic wave propagation within the interior of the Sun, and MHD (magnetohydrodynamics) wave propagation. Mathematical modelling is a vital part of this research in order to compare and predict observational signatures and understand the many complex mechanisms and processes involved in the interaction of the solar acoustic modes with magnetic elements on the Sun i.e., Sunspots and Plage regions.
High resolution image of the Sun taking by the Solar Dynamics Observatory (SDO) designed to help us understand the Sun’s influence on Earth and Near-Earth space by studying the solar atmosphere on small scales of space and time and in many wavelengths of light (electromagnetic spectrum) simultaneous. "Courtesy of NASA/SDO and AIA, EVE, and HMI science teams.’’
Dynamics of Charged particle motion in the vicinity of three dimensional magnetic null points: Energization and chaos. Gascoyne, A. 2015. Phys. Plasmas 22, 032970.
Five-minute oscillation power within magnetic elements in the solar atmosphere. Jain, R., Gascoyne, A., Hindman, B. W., & Greer, B. 2014. ApJ, 796, 72.
Energy Loss of Solar p Modes due to the excitation of Magnetic Sausage Tube Waves. Gascoyne, A., Jain, R., & Hindman, B. W. 2014. ApJ, 789, 109.
The interaction of p modes with an ensemble of thin flux tubes. Jain, R., Gascoyne, A., & Hindman, B. W. 2011. MNRAS, vol. 415, no. 2, 1276-1279.
Axisymmetric absorption of p modes by an ensemble of thin, magnetic-flux tubes. Jain, R., Gascoyne, A., & Hindman, B. W. 2011. Journal of Physics: Conference Series, 271, 1.
Sensitivity of p-mode absorption and damping on magnetic region properties and kernel functions. Gascoyne, A., Jain, R., & Hindman, B. W. 2011. A&A, 526, A93.
Damping Rates of p-Modes by an Ensemble of Randomly Distributed Thin Magnetic Flux Tubes. Gascoyne, A., & Jain, R. 2010. Proceedings of the IAU 273 Symposium 2010: Physics of Sun and Star Spots.
The role of magnetic fields in the scattering of p-modes. Gascoyne, A., & Jain, R. 2009. A&A, 501, 1131.
Subsurface Magnetic Field Effects on Solar f and p Mode Oscillations, PhD Thesis University of Sheffield 2011.