Transient induced MHD oscillations : A tool to probe the solar active regions

TL;DR

This paper reviews how transient MHD oscillations induced by solar eruptions serve as diagnostic tools for understanding the complex plasma dynamics, magnetic field configurations, and energy processes in solar active regions.

Contribution

It highlights recent developments in using flare-induced quasi-periodic oscillations to probe the physical conditions of solar active regions.

Findings

Transient MHD oscillations are linked to solar eruptive phenomena.

Oscillations provide insights into plasma heating and magnetic field configurations.

Review of recent observational trends and diagnostic implications.

Abstract

Solar transients and eruptive phenomena which are ubiquitous in the solar atmosphere, can shed new light to the understanding of the outstanding problems like coronal heating and the solar wind acceleration. Observations in the entire electromagnetic spectrum of such dynamical processes of large and small-scale transient/eruptive events, with highly dynamic magnetic field configuration, and energetic particles, provide crucial information about the plasma processes at mega-Kelvin temperature embedded in a complex magnetic field, and also energy build-up/energy-release processes, taking place in such events. One of the most important phenomenological aspects of solar eruptive phenomena is the induced magnetohydrodynamic (MHD) waves generated during these energetic processes, which carry a potential signature to probing the solar active regions. In this paper, we briefly review the recent trends of the transient (e.g., flares) induced quasi-periodic oscillations in the solar atmosphere and discuss their implications in diagnosing the solar active regions, providing the clue to understanding local plasma dynamics and heating.