SOLARNET Conference: The Many Scales of the Magnetic Sun

First GREGOR and IRIS simultaneous observations of a solar flare

10 May 2023, 11:55

15m

Haus H, Telegrafenberg

Oral presentation 3) Energy and mass flow through the solar atmosphere – from solar campfires to CME (Observations and Theory) Energy and mass flow through the solar atmosphere – from solar campfires to CME (Observations and Theory)

Speaker

Marta Garcia-Rivas ((1)Astronomical Institute of the CAS (2)Astronomical Institute, Faculty of Mathematics and Physics, Charles University)

Description

During the 8th call of the SOLARNET Trans-National Access Programme we were funded for a flare observing campaign at GREGOR (Tenerife). This campaign was supported by additional instruments, such as the IRIS and Hinode satellites, and ground-based instruments at the Astronomical Institute of the Czech Academy of Sciences in Ondřejov (CZ), and at the Białków Observatory of the University of Wroclaw (PL).  

Our goal was to observe solar flares during their initial evolutionary stages and at different atmospheric layers in order to understand their structure and the triggering processes. 

On May the 4th a M5.7 flare was captured by the GREGOR Infrared Spectrograph (GRIS) and by the improved High-resolution Fast Imager (HiFI+) multi-wavelength imaging filtergraph. In this work we focus on the analysis of the temporal evolution of HiFI+ images and IRIS dataset, with a special emphasis on the study of the continuum enhancement. After a proper co-alignment with respect to the IRIS dataset, we are able to present a multi-wavelength evolution of the flaring solar atmosphere at selected positions of interest.