| Presentation Title: | 3D evolution of solar flare via X-rays |
| Author(s): | Daniel Ryan |
Abstract:
The 3-D locations and volumes of hot plasmas (>5MK) are crucial to
understanding the evolution of solar flares. However to date, such
observations have only ever been made in 2-D. Estimating source volumes
from these measurements has relied on approximate area-to-volume scaling
laws while estimating source locations has relied on assumptions about the
sources' place within the magnetic field structure inferred from 2-D EUV
images. In this presentation, we directly reconstruct the 3-D locations and
volumes of hot flare plasma by leveraging the substantially different
viewing angles offered by two X-ray imagers, SolO/STIX and Hinode/XRT. In
addition, we discuss ongoing efforts to derive source topologies as a
function of energy by enabling the first ever solar X-ray 3-D imaging
spectroscopy with SolO/STIX and ASO-S/HXI. Such measurements promise to
improve our understanding of solar flare evolution including energetics,
cooling mechanisms, and the spatial relationship between the hottest plasmas
and magnetically connected structures such as ribbons and footpoints.