Speaker
Description
First Name: Tatyana
Last Name: Kaltman
Affiliation: Institut für Sonnenphysik (KIS), Freiburg, Germany
All Authors: Tatyana Kaltman, Sijie Yu, Gregory D. Fleishman, and Daniel F. Ryan
Abstract: Probing physical conditions in solar flare is crucial for understanding coronal energy release and particle acceleration. Simultaneous X-ray observations from Solar Orbiter/STIX and Hinode/XRT, taken from different vantage points, allowed stereoscopic reconstruction of the flaring loop. We use imaging spectroscopy data of the SOL2021-05-07 flare available from Expanded Owens Valley Solar Array to derive maps of the magnetic field strength, thermal and nonthermal electron densities, and the power-law index of nonthermal electrons via gyrosynchrotron modeling. By correlating positions of microwave and thermal X-ray sources, we associate the reconstructed 3D coordinates of the X-ray source with the microwave-derived plasma parameters. In addition to the derived 3D maps of the magnetic field strength, we also compute 3D maps of the Alfvén speed and plasma beta in a flaring volume, revealing a magnetically dominated environment. These spatially resolved diagnostics provide valuable constraints for models of magnetic reconnection and flare dynamics, representing a step toward realistic 3D characterization of energy release in solar eruptive events.