Variations in p-mode Parameters and Sub-surface Flows of Active Regions with Flare Activity

TL;DR

This study investigates how photospheric p-mode parameters and sub-surface flows in active regions change with flare activity, revealing strong associations and variations during October 2003.

Contribution

It provides new insights into the evolution of p-modes and sub-photospheric flows in active regions in relation to flare activity using ring diagram analysis.

Findings

P-mode parameters evolve with active regions and flare activity.

Sub-photospheric flows show strong twist and variation with flare activity.

Strong association between p-mode properties and flare events.

Abstract

We examine the characteristic properties of photospheric p-modes and sub-photospheric flows of active regions (ARs) observed during the period of 26-31 October 2003. Using ring diagram analysis of Doppler velocity data obtained from the Global Oscillations Network Group (GONG), we have found that p-mode parameters evolve with ARs and show a strong association with flare activity. Sub-photospheric flows, derived using inversions of p-modes, show strong twist at the locations of ARs, and large variation with flare activity.