000008089 001__ 8089
000008089 005__ 20260319144750.0
000008089 037__ $$aCTALK-2026-0103
000008089 100__ $$aBarczynski, Krzysztof 
000008089 245__ $$aHigh-resolution observations of the slow solar wind sources
000008089 260__ $$c2026
000008089 269__ $$c2026-03-19
000008089 520__ $$ahe origin of the slow solar wind remains an open question. Plasma upflows at active region borders are considered a possible source. The mechanisms driving these upflows are not fully understood, but proposed processes include: magnetic reconnection at different atmospheric layers, magnetoacoustic waves, small-scale heating events and others. We discuss such mechanisms in relation to observed atmospheric features to determine their relative importance. We analysed an upflow region observed on 29 March 2023 using data from Solar Orbiter, IRIS, and Hinode. Spectroscopic observations from Hinode/EIS and IRIS provided Doppler velocity maps spanning from the chromosphere to the corona, allowing the characterization of plasma dynamics in different layers. For the first time, we conducted a detailed temporal-series analysis of processes within upflow regions over a 4-hour period, using coordinated spectroscopic observations from IRIS (48 rasters), EIS (8 rasters), SPICE (500 rasters), and imaging data from EUI/HRI (3300 frames). A diagnostic method combining Doppler velocity map, magnetic field measurements and first ionization potential (FIP) bias was developed to infer the dominant drivers of the observed upflows. High-resolution images from EUI/HRI (Solar Orbiter), IRIS, and SDO/AIA were used to examine the connection between upflow mechanisms and coronal structures. Our results indicate that the strongest upflows originate in the upper transition region and lower corona, where magnetic reconnection between open and closed field lines likely plays a key role, but other mechanisms appear to act together to sustain the observed plasma upflows.
000008089 594__ $$aSTCE
000008089 6531_ $$aEUI
000008089 6531_ $$asolar wind
000008089 700__ $$aHarra, Louise 
000008089 700__ $$aJanitzek, Nils 
000008089 700__ $$aBerghmans, David 
000008089 700__ $$aVerbeeck, Cis 
000008089 700__ $$aZhukov, Andrei 
000008089 700__ $$aZhu, Yingjie 
000008089 700__ $$aVaresano, Tania 
000008089 700__ $$aMandrini, Cristina H. 
000008089 700__ $$aValori, Gherardo 
000008089 773__ $$t10th Solar Orbiter Workshop, Berlin
000008089 8560_ $$fdavid.berghmans@ksb-orb.be
000008089 85642 $$ahttps://plan.events.mpg.de/event/453/contributions/2444/
000008089 906__ $$aContributed
000008089 980__ $$aCTALKCONT