Identifying the energy release site in a solar microflare with a jet
Additional information
Authors
Battaglia A. F. .,
Wang W.,
Saqri J.,
Podladchikova T.,
Veronig A. M.,
Collier H.,
Dickson E. C.,
Podladchikova O.,
Monstein C.,
Warmuth A.,
Schuller F.,
Harra L.,
Krucker S.
Type
Journal Article
Year
2023
Language
English
Abstract
Context. One of the main science questions of the Solar Orbiter and Parker Solar Probe missions deals with understanding how electrons in the lower solar corona are accelerated and how they subsequently access interplanetary space. \textbackslash Aims: We aim to investigate the electron acceleration and energy release sites as well as the manner in which accelerated electrons access the interplanetary space in the case of the SOL2021-02-18T18:05 event, a GOES A8 class microflare associated with a coronal jet. \textbackslash Methods: This study takes advantage of three different vantage points, Solar Orbiter, STEREO-A, and Earth, with observations drawn from eight different instruments, ranging from radio to X-ray. Multi-wavelength timing analysis combined with UV/EUV imagery and X-ray spectroscopy by Solar Orbiter/STIX (Spectrometer/Telescope for Imaging X-rays) is used to investigate the origin of the observed emission during different flare phases. \textbackslash Results: The event under investigation satisfies the classical picture of the onset time of the acceleration of electrons coinciding with the jet and the radio type III bursts. This microflare features prominent hard X-ray (HXR) nonthermal emission down to at least 10 keV and a spectrum that is mu
Journal
Astronomy & Astrophysics
Volume
670
Month
February
Start page number
A56
Keywords
Sun: flares, Sun: corona, Sun: X-rays, gamma rays, Astrophysics - Solar and Stellar Astrophysics, Physics - Space Physics
