SOLARNET Conference: The Many Scales of the Magnetic Sun

Multiwavelength observations of small-scale eruptive phenomena in an arch filament system

10 May 2023, 15:20

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

Salvo Guglielmino (Istituto Nazionale di Astrofisica (INAF))

Description

Recent ultraviolet observations performed by the IRIS satellite have shown the occurrence of small-scale eruptive phenomena, characterized by significant increase of the integrated line intensity (up to a factor of 100 in Si IV lines) and of the line width (up to ± 100 km s$^{-1}$), likely due to magnetic reconnection. Some of these events also exhibit counterpart in all the SDO/AIA channels.
We report on a series of similar events observed during secondary flux emergence in an arch filament system in active region NOAA 12585. We use high-resolution observations acquired by SST/CRISP relevant to the photosphere and the chromosphere to characterize the magnetic field configuration and the phenomena occurring in the low atmosphere. IRIS and SDO/AIA observations reveal the atmospheric response and the presence of heating and plasma ejection activity in the upper atmosphere.