| Session Details | |
| Section | ST - Solar & Terrestrial Sciences |
| Session Title | Diagnosing Solar Flares Through UV Spectroscopy And Imaging |
| Main Convener | Dr. Hui Tian (Peking University, China) |
| Co-convener(s) | Dr. Shinsuke Imada (Nagoya University, Japan) Dr. Abhishek K. Srivastava (Indian Institute of Technology (BHU), India) Dr. David Graham (INAF-Osservatorio Astrofisico di Arcetri, Italy) |
| Session Description | Ultraviolet spectroscopy is very powerful in diagnosing solar flares since it provides precise measurements of physical parameters such as velocity, temperature and density. Through high-resolution spectroscopic observations, especially the HINODE/EIS and IRIS observations, our understanding of various physical processes during flares has been greatly improved in recent years. For instance, the temperature dependent behavior and complete evolution of chromospheric evaporation have been both well observed for many flares, which provides critical constraint to models of chromospheric evaporation. EIS and IRIS have also been successful in observing reconnection inflows and outflows, revealing important insight into the flare reconnection process. Moreover, modern spectrometers have detected various MHD waves in flare loops. Compared to imaging observations, spectroscopic observations reveal oscillations in not only the intensity but also the Doppler shift and line width, allowing accurate mode identification that is crucial for coronal seismology. On the other hand, high-resolution UV imaging observations have provided detailed evolution of dynamics in flares. The bigger field of view provided by imaging observations also allows us to diagnose various processes in different parts of the flare region. With a combination of both spectroscopic and imaging observations, a much better understanding of the complete scenario of flare dynamics can be achieved. We invite both observers and theorists to participate in a session of flare diagnostics through UV spectroscopy and imaging. The purpose of the proposed session is to provide an opportunity for experts of UV spectroscopy and imaging, flares and MHD waves to share their recent scientific results, discuss how to bridge observations and theories, explore more capability of flare diagnostics through UV observations, and exchanging ideas of future observing strategies. |