These findings help discuss the coronas high temperature level and contribute to our understanding of solar physics.Thanks to close-up images of the Sun acquired during Solar Orbiters perihelion passage of October 2022, solar physicists have seen how fleeting magnetic fields at the solar surface area construct up into the solar atmosphere.The outer solar environment is understood as the solar corona. These brand-new images of the quiet Sun reveal how loops of million-degree gas– which form the building blocks of the solar corona– are associated with short lived 100-km-sized magnetic field spots on the solar surface.This image comes from the Solar Orbiters Polarimetric and Helioseismic Imager (PHI) and reveals the magnetic polarity of the solar surface. With these special information, solar physicists now have a window to investigate the function of the small-scale magnetic fields in the structure of solar corona.This new result is reported in the paper “Fleeting small surface area magnetic fields build the quiet-Sun corona” released in Astrophysical Journal Letters.Reference: “Fleeting Small-scale Surface Magnetic Fields Build the Quiet-Sun Corona” by L. P. Chitta, S. K. Solanki, J. C. del Toro Iniesta, J. Woch, D. Calchetti, A. Gandorfer, J. Hirzberger, F. Kahil, G. Valori, D. Orozco Suárez, H. Strecker, T. Appourchaux, R. Volkmer, H. Peter, S. Mandal, R. Aznar Cuadrado, L. Teriaca, U. Schühle, D. Berghmans, C. Verbeeck, A. N. Zhukov and E. R. Priest, 5 October 2023, The Astrophysical Journal Letters.DOI: 10.3847/ 2041-8213/ acf136Solar Orbiter is an area objective of worldwide collaboration between ESA and NASA, operated by ESA.
