000005944 001__ 5944
000005944 005__ 20240126161551.0
000005944 0247_ $$2DOI$$ahttps://doi.org/10.1051/0004-6361/202245431
000005944 037__ $$aSCART-2022-0129
000005944 100__ $$aMandal, Sudip 
000005944 245__ $$aSignatures of dynamic fibrils at the coronal base: Observations from Solar Orbiter/EUI
000005944 260__ $$c2023
000005944 520__ $$aThe solar chromosphere hosts a wide variety of transients, including dynamic fibrils (DFs) that are characterised as elongated, jet-like features seen in active regions, often through Hα diagnostics. So far, these features have been difficult to identify in coronal images primarily due to their small size and the lower spatial resolution of the current EUV imagers. Here we present the first unambiguous signatures of DFs in coronal EUV data using high-resolution images from the Extreme Ultraviolet Imager (EUI) on board Solar Orbiter. Using the data acquired with the 174~Å High Resolution Imager (HRIEUV) of EUI, we find many bright dot-like features (of size 0.3-0.5 Mm) that move up and down (often repeatedly) in the core of an active region. In a space-time map, these features produce parabolic tracks akin to the chromospheric observations of DFs. Properties such as their speeds (14 km~s−1), lifetime (332~s), deceleration (82 m~s−2) and lengths (1293~km) are also reminiscent of the chromospheric DFs. The EUI data strongly suggest that these EUV bright dots are basically the hot tips (of the cooler chromospheric DFs) that could not be identified unambiguously before because of a lack of spatial resolution.
000005944 594__ $$aSTCE
000005944 700__ $$aPeter, Hardi 
000005944 700__ $$aChitta, Lakshmi Pradeep 
000005944 700__ $$aCuadrado, Regina A. 
000005944 700__ $$aSchühle, Udo 
000005944 700__ $$aTeriaca, Luca 
000005944 700__ $$aSolanki, Sami K. 
000005944 700__ $$aHarra,  Louise
000005944 700__ $$aBerghmans,  David
000005944 700__ $$aAuchère,  Frédéric 
000005944 700__ $$aParenti, Susanna 
000005944 700__ $$aZhukov, Andrei N. 
000005944 700__ $$aBuchlin, Éric 
000005944 700__ $$aVerbeeck, Cis 
000005944 700__ $$aKraaikamp, Emil 
000005944 700__ $$aRodriguez,  Luciano 
000005944 700__ $$aLong,  David M. 
000005944 700__ $$aSchwanitz,  Conrad 
000005944 700__ $$aBarczynski, Krzysztof 
000005944 700__ $$aPelouze, Gabriel 
000005944 700__ $$aSmith, Philip J. 
000005944 700__ $$aLiu, Wei 
000005944 700__ $$aCheung, Mark C. 
000005944 773__ $$cL3$$pAstronomy & Astrophysics$$v670$$y2023
000005944 8560_ $$fdavid.berghmans@observatoire.be
000005944 85642 $$ahttps://arxiv.org/abs/2212.05025
000005944 905__ $$apublished in
000005944 980__ $$aREFERD