Chromospheric mass motions and intrinsic sunspot rotations for NOAA Active Regions 10484, 10486, and 10488 using ISOON data

TL;DR

This study uses ISOON data to analyze sunspot rotations, chromospheric filament motions, and their interactions in NOAA active regions, revealing counter-rotation and filament activity linked to solar flares.

Contribution

It introduces methods to measure intrinsic sunspot rotations and filament motions in both photosphere and chromosphere using ISOON data.

Findings

Counter-rotation observed between large sunspots in NOAA AR 10486.

Filament mass motions associated with a C-class solar flare.

Significant chromospheric and photospheric mass coupling evidence.

Abstract

This work utilizes Improved Solar Observing Optical Network (ISOON: Neidig et al. 2003) continuum (630.2 nm) and H{\alpha} (656.2 nm) data to: 1) detect and measure intrinsic sunspot rotations occurring in the photosphere and chromosphere, 2) identify and measure chromospheric filament mass motions, and 3) assess any large-scale photospheric and chromospheric mass couplings. Significant results from October 27-29, 2003, using the techniques of Brown et al. (2003), indicate significant counter-rotation between the two large sunspots in NOAA AR 10486 on October 29, as well as discrete filament mass motions in NOAA AR 10484 on October 27 that appears associated with at least one C-class solar flare.