Speaker
Description
First Name: Eric
Last Name: Priest
Email Address: eric.r.priest@st-andrews.ac.uk
Affiliation: ST ANDREWS UNIVERSITY
All Authors: ERIC PRIEST and PRADEEP CHITTA
Abstract: We report observations of the pre-flare and impulsive phases for an M7.7 solar flare on Sept 30, 2024 by Solar Orbiter (especially by the Extreme Ultraviolet Imager (EUI) and the Spectrometer/Telescope for Imaging X-rays (STIX)). During the preflare phase, the mild heating comes, as expected, from a region below a rising magnetic flux rope where the magnetic field is slowly reconnecting. However, during the impulsive phase, the hard x-rays are surprisingly associated with a different location. They suggest that the standard flare model needs to be changed to incorporate magnetic reconnection of an entirely different character, in ways that we describe.