Interesting Type II slow radio sweep observed by Callisto instruments late in the UTC day on 21 June 2024.
My 1st thought: Yikes, a demon!
This image was made from two 15 minute FITS files and sent to me by Christian Monstein.
Shown is one of two circular polarizations but the other is identical. The sweep was also observed at Cohoe and Anchorage Radio Observatories.
Whit