Statistics of Solar Filament Mass based on CHASE Sun-as-a-star Spectroscopic Observations
Authors/Creators
- 1. School of Astronomy and Space Science, Nanjing University
- 2. Key Laboratory of Modern Astronomy and Astrophysics, Ministry of Education
- 3. Department of Astronomy, Graduate School of Science, Kyoto University
- 4. Leibniz Institute for Astrophysics
Description
We present a statistical study of solar filament mass based on Sun-as-a-star Hα spectroscopic observations from the CHASE (Chinese Hα Solar Explorer) mission. Using a cloud model radiative transfer approach combined with non-LTE ionization corrections, we estimated the masses of 1,571 solar filaments. The median filament mass is 1.5×10¹² kg. We find a near-linear scaling relation between filament mass and the equivalent width variation (|ΔEW|) in Sun-as-a-star spectra (r=0.91), providing an empirical calibration formula for inferring stellar filament/prominence masses from disk-integrated spectroscopic observations. The 3D morphology of filaments yields a length:width:depth ratio of 4.5:1:1.7. This work is presented as a poster at Cool Stars 23 (Tokyo, June 2026).
Files
solar_filament_poster.pdf
Files
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Additional details
Dates
- Collected
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2026-06-17/2026-06-19Cool Stars 23, Tokyo