New Method Reveals Hidden Properties of Solar Filaments

• 18 Apr 2026

Recently, a new study by astronomers introduced a powerful method to estimate the hidden physical properties of solar filaments by analyzing their oscillations, providing deeper insights into the Sun’s magnetic structure.

Key Points

• Solar filaments are gigantic clouds of cool plasma suspended in the Sun’s atmosphere by magnetic fields.
• Studying their magnetic field strength, size, and internal structure is crucial for understanding solar eruptions and space weather impacts on Earth.
• Direct measurement of these properties is difficult; hence, scientists use prominence seismology, which interprets filament oscillations to infer internal conditions.
• The study was conducted by researchers from the Aryabhatta Research Institute of Observational Sciences, Indian Institute of Technology Delhi, and Institute de Astrofísica de Canarias.
• The team used Bayesian analysis to combine observational data with theoretical models for more accurate estimation.
• The findings show that magnetic field strength can be reliably estimated even with limited plasma density information.
• The study, published in Astrophysics, can enhance models of solar eruptions and space weather prediction.