| Presentation Title: | Small-scale coronal EUV brightening produced by a magnetic tornado |
| Author(s): | Hidetaka Kuniyoshi, Souvik Bose, Takaaki Yokoyama |
Abstract:
Alfvén waves are considered a promising mechanism for transferring magnetic energy for the solar coronal heating. Recent high-resolution simulations have revealed that impulsive Alfvén waves originating from intergranular lanes, commonly known as magnetic tornadoes, can contribute significantly to the energy transfer processes. Observationally, imprints of magnetic tornadoes, commonly referred to as swirls, are commonly observed between the photosphere and chromosphere, theoretically supported by magneto-convection simulations. However, understanding their response in the corona is still challenging due to a lack of robust theoretical support. Therefore, this study aims to synthesize the coronal emission from a magnetic tornado, as observed by the EUI 174A and AIA 171A channels, using a three-dimensional magneto-convection simulation modeling an entire coronal loop. Consequently, a small-scale (1,500 km) brightening occurs within a magnetic tornado located near the base of the corona (6,000 km above the surface). This brightening occurs independently of any interaction with other magnetic fields and is positioned just above a chromospheric swirl. This result shows an alternative candidate mechanism to produce the EUI small-scale brightenings called campfires.