Probing the Physics of the Solar Corona with High-Resolution Observations using SKA-Mid
Mark C. M. Cheung, John S. Morgan, Rohit Sharma, Sven Wedemeyer, Gregory Fleishman, Matthias Rempel
astro-ph.SR, astro-ph.IM
Submitted: 2026-07-29
Comments: Published in Advancing Astrophysics with the SKAII (AASKAII), 2026(arXiv:2606.20366). Report-no:AASKAII/Cheung01. Advancing Astrophysics with the SKAII (AASKAII) outlines the transformative scientific advances that will be enabled by the SKA telescopes
License: http://creativecommons.org/licenses/by-nc-sa/4.0/
The gist: We examine the capability of the SKA-Mid telescope for probing solar coronal structure and evolution.
Terminology
Abstract
We examine the capability of the SKA-Mid telescope for probing solar coronal structure and evolution. Using radiative magnetohydrodynamics simulations of a solar flare, we synthesise radio emission in bands available to SKA-Mid. SKA-Mid observations would provide important constraints on plasma processes that are important to diverse astrophysical environments, including flares/eruptions, magnetic reconnection, particle acceleration, and gyro-emission processes. Observations with the AA4 configuration would reveal fine-scale structures in the solar atmosphere, making SKA-Mid a complementary telescope to other high resolution solar observatories operating at optical, infrared, and XUV wavelengths. Estimates of coronal scattering suggest that angular broadening rather than instrumental resolution (0.1'' at 10 GHz) will limit the detection of the finest structure under typical conditions. The extent of angular broadening depends on the nature of turbulence in the corona, and the longer baselines of SKA-Mid will serve to provide new observational constraints on coronal structure.
Sources
- Karabo: A versatile SKA Observation Simulation Framework
- ALMA Memo 628 -- High-cadence observations of the Sun
Related papers
- HXI-DLA2: A Physics-Constrained Deep Learning Algorithm for the ASO-S Hard X-ray Imager
- Effect of Neutron Star Jets on Common Envelope Evolution
- Constraining the origin of magnetic white dwarfs
- JW-FD: A 15-Year Multimodal Dataset for Solar Flare Forecasting
- Phlegethon: a fully compressible magnetohydrodynamic code for simulations in stellar astrophysics
- Can MHD Oscillations Modulate Quasi-Periodic Plasma Release from Coronal Streamers?