The source of unusual coronal upflows with photospheric abundance in a solar active region

HARRA, L.K.; MANDRINI, C.H.; BROOKS, D.H.; BARCYNSKI, K.

Viena

Congreso; European Geosciences Union (EGU) General Assembly; 2023

Upflows inthe corona are of importance as they may contribute to the solar wind. Becauseof this, there has been interest in theanalysis of upflows at the edges of active regions (ARs). The coronal upflowsthat are seen at the edges of ARs have coronal elementalcomposition and can contribute to the slow solar wind. The sources of theupflows have been challenging to determine becausethey may be multiple.In thistalk, we will discuss the latest results of coronal upflows. This includes anexample which is found unusually close to a sunspot umbra and unusually hasphotospheric abundance. We analyse in detail the cause of this upflow regionusing a combination of Solar Orbiter EUV images at high spatial and temporalresolution,Hinode/EUVImaging Spectrometer data, and observations from instruments on board the SolarDynamics Observatory. This combineddataset was acquired during the first Solar Orbiter perihelion of the sciencephase, which provided a spatial resolution of 356 km for 2pixels.  In the location of the, a smallpositive polarity connects to the umbra viasmall-scale and very dynamic coronal loops. The Solar Orbiter EUV Imagers (EUI) high resolution data show thedynamics of these small loops, which last on timescales of only minutes. Thisis the location of the coronal upflow which has photospheric abundance. Weattempt to determine if it is possible that they can feed into the slow solarwind. We discuss future observation potential using Solar Orbiter data alongwith data from other missions and ground-based observatories. This providesopportunities for multiple viewpoints, multi-wavelength measurements of theseupflow regions.