000005793 001__ 5793
000005793 005__ 20220607100830.0
000005793 037__ $$aSCART-2022-0068
000005793 100__ $$aSudip Mandal1, 
000005793 245__ $$aA highly dynamic small-scale jet in a polar coronal hole
000005793 260__ $$c2022
000005793 520__ $$aWe present an observational study of the plasma dynamics at the base of a solar coronal jet, using high resolution extreme ultraviolet imaging data taken by the Extreme Ultraviolet Imager on board Solar Orbiter, and by the Atmospheric Imaging Assembly on board Solar Dynamics Observatory. We observed multiple plasma ejection events over a period of ∼1 hour from a dome-like base that is ca.~4 Mm wide and is embedded in a polar coronal hole. Within the dome below the jet spire, multiple plasma blobs with sizes around 1--2 Mm propagate upwards to dome apex with speeds of the order of the sound speed (ca.~120~km~s−1 ). Upon reaching the apex, some of these blobs initiate flows with similar speeds towards the other footpoint of the dome. At the same time, high speed super-sonic outflows (∼230~km~s−1) are detected along the jet spire. These outflows as well as the intensity near the dome apex appear to be repetitive. Furthermore, during its evolution, the jet undergoes many complex morphological changes including transitions between the standard and blowout type eruption. These new observational results highlight the underlying complexity of the reconnection process that powers these jets and also provide insights into the plasma response when subjected to rapid energy injection.
000005793 594__ $$aSTCE
000005793 6531_ $$aSolar Orbiter
000005793 6531_ $$aEUI
000005793 6531_ $$acorona
000005793 700__ $$aChitta, Lakshmi Pradeep 
000005793 700__ $$aPeter, Hardi 
000005793 700__ $$aSolanki, Sami K. 
000005793 700__ $$aAznar Cuadrado, Regina  
000005793 700__ $$aTeriaca, Luca  
000005793 700__ $$aSchühle, Udo 
000005793 700__ $$aBerghmans, David 
000005793 700__ $$aAuchère,  Frèdèric 
000005793 773__ $$pAstronomy & Astrophysics$$y2022
000005793 8560_ $$fdavid.berghmans@observatoire.be
000005793 85642 $$ahttps://arxiv.org/abs/2206.02236
000005793 905__ $$aaccepted to be published in
000005793 980__ $$aREFERD