Back

Radiation damage to Hubble has been 4.3 years out of phase with the Solar cycle

21 points1 hourarxiv.org
ck258 minutes ago

you should see what cosmic rays do to space telescopes

public almost never sees what raw images look like

RAW https://blog.galaxyzoo.org/wp-content/uploads/2010/04/spiral...

FINAL https://blog.galaxyzoo.org/wp-content/uploads/2010/04/spiral...

* https://blog.galaxyzoo.org/2010/04/12/how-to-handle-hubble-i...

they also slowly destroy the sensors since they are physical particles moving at almost the speed of light

superkuh1 hour ago

It's well known that higher solar wind/CMEs density/speed/etc that comes with the peak of the 11 year intensity cycles scatters cosmic rays before they enter the inner heliosphere. Combine this with the 1~3 years it takes for the solar wind to travel out through the heliosphere and you get the phase difference. Really cool unintended sensor empirical data on it though.

Don't try to correlate with the sun spots, correlate with the solar wind/cmes from the spots getting out far enough to effectively scatter the incoming cosmic rays away.

terminalbraid35 minutes ago

The paper claims directly "the rate of degradation over time remains unsatisfactorily unpredictable" but you are claiming the authors do not understand or are unaware of the point you are making?

superkuh29 minutes ago

I think what I explained is known by anyone in solar physics. I cannot believe they would not have discussed it. It's absence in the paper is weird. But I think unpredictable refers more to LEO in the context of the paper where things are indeed more dynamic that just the 11 year periodicity of cosmic rays from solar activity causing scattering in the heliosphere.