Holy shit 🤯
Timelapse of a plasma rain event on the sun I captured on Sept 1.
103 minutes condensed down to 9.65 seconds (640x)
#solar #astrophotography
Holy shit 🤯
Timelapse of a plasma rain event on the sun I captured on Sept 1.
103 minutes condensed down to 9.65 seconds (640x)
#solar #astrophotography
Coronal rain, for the uninitiated:
https://www.space.com/surprising-plasma-rain-connects-solar-mysteries.html
@yoused @malcircuit 1 nanosecond seems safe enough.
@malcircuit That's NOT the kind of rain I'm hoping for over here. :)
Awe-inspiring timelapse, thank you!
@malcircuit looks like maybe 1/8th the solar radius (eye balling it) in about 10 min of real time? So 100-150 km/s. This is probably super sonic as ion sound velocity is like a couple tens of km/s afaik in a a cooler part of a solar prominence. It's not too hard for plasma to become supersonic.
What would be odder is if exceeds to alfven speed, which is a different kind of wave from how fast changes in magnetic field propagate. It looks like alfven speed in a prominence is ~100km/s so might be getting closer to that, but probably not over that.
It's hard to interpret visual images of plasma as you only see places that get hot and dense enough. You can have moving bright spots without moving material, instead a wave moving through it making a moving dense spot. I think that was an early competiting idea for this rain that was later ruled out and found it is actually a blob of material falling down. There might be an invisible wake component on the sides going faster too.