Paper:	Recent Developments in Solar Quakes Studies
Volume:	383, Subsurface and Atmospheric Influences on Solar Activity
Page:	297
Authors:	Besliu-Ionescu, D.; Donea, A.-C.; Cally, P.; Lindsey, C.
Abstract:	Observations in hard and soft X-rays, chromospheric lines, and the visible continuum, together with helioseismic observations, make it possible to model the 3-dimensional profile of a sunquake from the corona into the subphotosphere of the active region that hosts the flare. Chromospheric line observations show us the part of the solar atmosphere where high-energy electrons are thought to cause thick-target heating that causes intense white-light emission and drives seismic waves into the active region subphotosphere. We have made a preliminary analysis of observations for some of the strongest acoustically noisy flares, including spectral observations in line NaD1 (586.9 nm) and line-center observations in Hα. Hα line-center observations will be shown for other sunquakes in Solar Cycle 23. Hinode will give us especially high-resolution chromospheric-line observations of acoustically active flares in Solar Cycle 24.

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