标题： 日冕细喷流和磁通量绳介导的重联：来自Solar Orbiter观测和Bifrost模拟的启示 显示英文标题

标题： Thin coronal jets and plasmoid-mediated reconnection: Insights from Solar Orbiter observations and Bifrost simulations

摘要： 日冕喷流无处不在，它们是百万度的集束喷射，为高层太阳大气和太阳风的能量与质量供应做出贡献。太阳轨道器提供了一个前所未有的机会，从接近太阳的独特视角观察细小尺度的日冕喷流。 我们的目标是：(1) 揭示源自日冕亮点（CBPs）的细小喷流，揭示之前未解决的日冕上涌贡献；以及 (2) 提高我们对磁重联中等离子体团介导机制及其可观测特征的理解。 我们分析了太阳轨道器上的极端紫外成像仪（EUI）的高分辨率成像仪（HRIEUV）在174 Å波段的十一个数据集，重点关注来自CBPs的狭窄喷流以及电流片和流出区内的磁场重联特征。 为了支持观测结果，我们将其与使用Bifrost代码模拟的CBP进行比较。 我们已经识别出源自CBPs的细小日冕喷流，其宽度范围从253公里到706公里：这些尺度无法被之前的EUV成像仪器解析。值得注意的是，这些喷流比周围环境亮30-85%，并且可以延伸至22兆米，同时保持其狭窄形态。 在其中一个数据集中，我们通过电流片内发展出的小规模等离子体团直接识别出等离子体团介导的重联现象，该等离子体团大小达到332公里，并以40公里/秒的速度传播。 在另一个数据集中，我们通过流出区出现的间歇性回旋镖状模式间接推断出等离子体团的特征。 直接和间接的等离子体团介导的重联特征均得到了与模拟产生的HRIEUV合成发射对比的支持。 显示英文摘要

摘要： Coronal jets are ubiquitous, collimated million-degree ejections that contribute to the energy and mass supply of the upper solar atmosphere and the solar wind. Solar Orbiter provides an unprecedented opportunity to observe fine-scale jets from a unique vantage point close to the Sun. We aim to (1) uncover thin jets originating from Coronal Bright Points (CBPs), revealing previously unresolved contributions to coronal upflows; and (2) improve our understanding of plasmoid-mediated reconnection and its observable signatures. We analyze eleven datasets from the High Resolution Imager 174 \r{A} of the Extreme Ultraviolet Imager (HRIEUV) onboard Solar Orbiter, focusing on narrow jets from CBPs and signatures of magnetic reconnection within current sheets and outflow regions. To support the observations, we compare with CBP simulations performed with the Bifrost code. We have identified thin coronal jets originating from CBPs with widths ranging from 253 km to 706 km: scales that could not be resolved with previous EUV imaging instruments. Remarkably, these jets are 30-85% brighter than their surroundings and can extend up to 22 Mm while maintaining their narrow form. In one of the datasets, we directly identify plasmoid-mediated reconnection through the development within the current sheet of a small-scale plasmoid that reaches a size of 332 km and propagates at 40 km/s. In another dataset, we infer plasmoid signatures through the intermittent boomerang-like pattern that appears in the outflow region. Both direct and indirect plasmoid-mediated reconnection signatures are supported by comparisons with the synthetic HRIEUV emission from the simulations.