000005657 001__ 5657
000005657 005__ 20220131114838.0
000005657 0247_ $$2DOI$$a 10.3847/2041-8213/ac1f30 
000005657 037__ $$aSCART-2022-0036
000005657 100__ $$aHou, Zhenyong
000005657 245__ $$aCoronal Microjets in Quiet-Sun Regions Observed with the Extreme Ultraviolet Imager on Board the Solar Orbiter
000005657 260__ $$c2021
000005657 520__ $$aWe report the smallest coronal jets ever observed in the quiet Sun with recent high-resolution observations from the High Resolution Telescopes (HRIEUV and HRILyα) of the Extreme Ultraviolet Imager on board the Solar Orbiter (SO). In the HRIEUV (174 Å) images, these microjets usually appear as nearly collimated structures with brightenings at their footpoints. Their average lifetime, projected speed, width, and maximum length are 4.6 minutes, 62 km s-1, 1.0 Mm, and 7.7 Mm, respectively. Inverted-Y shaped structures and moving blobs can be identified in some events. A subset of these events also reveal signatures in the HRILyα (H I Lyα at 1216 Å) images and the extreme ultraviolet images taken by the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO). Our differential emission-measure (EM) analysis suggests a multithermal nature and an average density of ~1.4 × 109 cm-3 for these microjets. Their thermal and kinetic energies were estimated to be ~3.9 × 1024 erg and ~2.9 × 1023 erg, respectively, which are of the same order of the released energy predicted by the nanoflare theory. Most events appear to be located at the edges of network lanes and magnetic flux concentrations, suggesting that these coronal microjets are likely generated by magnetic reconnection between small-scale magnetic loops and the adjacent network field.
000005657 594__ $$aSTCE
000005657 6531_ $$aSolar Orbiter
000005657 6531_ $$aEUI
000005657 6531_ $$aQuiet Sun
000005657 6531_ $$aSolar ultraviolet emission;
000005657 6531_ $$aSolar corona
000005657 6531_ $$aAstrophysics - Solar and Stellar Astrophysics
000005657 700__ $$aTian, Hui  
000005657 700__ $$aBerghmans, David 
000005657 700__ $$aChen, Hechao 
000005657 700__ $$aTeriaca, Luca 
000005657 700__ $$aSchühle, Udo 
000005657 700__ $$aGao, Yuhang 
000005657 700__ $$aChen, Yajie  
000005657 700__ $$aHe, Jiansen  
000005657 700__ $$aWang, Linghua 
000005657 700__ $$aBai, Xianyong  
000005657 773__ $$n1, id.L20$$pThe Astrophysical Journal Letters$$v918$$y2021
000005657 8560_ $$fdavid.berghmans@observatoire.be
000005657 85642 $$ahttps://ui.adsabs.harvard.edu/abs/2021ApJ...918L..20H/abstract
000005657 905__ $$apublished in
000005657 980__ $$aREFERD