Sun-as-a-star analysis of simulated solar flares

by Dr Jie Hong (Stockholm University)

Friday 29 Nov 2024, 10:30 → 11:30 Europe/Stockholm

FC61 (AlbaNova Main Building)

Stellar flares are a common type of stellar activity believed to have a strong influence on space weather. Since stars are too distant to be observed with sufficient spatial resolution as the Sun, studying the Sun provides a bridge to understand what could happen on other stars, especially solar-type stars. To relate the observations of the Sun with those of stars, one needs to use the Sun-as-a-star analysis, that is, to degrade the resolution of the Sun to a single point. In this talk, I will present the first Sun-as-a-star analysis of simulated solar flares with our 1D radiative hydrodynamics flare model and multi-thread flare assumption. We would also like to show how to diagnose the flare energy and location from observed spectra.