New research answers an old question about the Sun and its magnetic fields. Can it help protect Earth from solar storms?
The Solar Dynamics Observatory , the Solar and Heliospheric Observatory and the Parker Solar Probe Image Credits: Left: NASA. Middle: By Cgruda – http://sohowww.nascom.nasa.gov/gallery/images/SOHOLower2.htmlFile:SOHO nasa.tif, Public Domain, https://commons.wikimedia.org/w/index.php?curid=28983655. Right: NASA
“A powerful SSD may potentially have a large impact on the dynamical processes in the Sun,” the authors write in their paper. “Hence, it is of great importance to clarify whether or not an SSD can exist in the Sun.”A small-scale dynamo amplifies magnetic fields on scales smaller than the driving scale of turbulence in diverse astrophysical media, according to
This figure from the study is a visualization of flow and SSD solution. The flow speed is on the left, and the magnetic field strength is on the right. This simulation run featured a very low Prandt number. “As might be anticipated for low-Prturbulence, the flow exhibits much finer, fractal-like structures than the magnetic field,” the authors explain. Image Credit: Warnecke et al. 2023
Coronal Mass Ejection as viewed by the Solar Dynamics Observatory on June 7, 2011. CMEs eject plasma from the Sun’s corona. Image Credit: NASA/SDO
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