Latest Posts

• Ambipolar diffusion in the lower solar atmosphere: MHD simulations of a sunspot

  14 Dec 2021 — 4 minutes

  To investigate the role of ambipolar diffusion in energy transfer and dissipation in the chromosphere, we analyze a 2D numerical model of magnetoacoustic waves propagating through the chromosphere above the umbra of a sunspot. Using energy spectra, we analyze the chromospheric dynamics of our simulation and gather insights into the role of ambipolar diffusion, and partial ionization, in energy transfer and dissipation in the lower solar atmosphere.

• MCALF: Multi-Component Atmospheric Line Fitting

  17 May 2021 — 4 minutes

  Determining accurate velocity measurements from observations of the Sun is of vital importance to solar physicists who are studying the wave dynamics in the solar atmosphere. Weak chromospheric absorption lines, due to dynamic events in the solar atmosphere, often consist of multiple spectral components. Isolating these components allows for the velocity field of the dynamic and quiescent regimes to be studied independently. However, isolating such components is particularly challenging due to the wide variety of spectral shapes present in the same dataset. MCALF provides a novel method and infrastructure to determine Doppler velocities in a large dataset. Each spectrum is fitted with a model adapted to its specific spectral shape.

• Accurately constraining velocity information from spectral imaging observations using machine learning techniques

  10 Feb 2020 — 3 minutes

  This poster was presented at a Royal Society Theo Murphy international scientific meeting on High resolution wave dynamics in the lower solar atmosphere at Chicheley Hall, Buckinghamshire, UK on 10^th February 2020.