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RE: A breakthrough in astrophysics - observation of a first powerful engine to accelerate cosmic rays
Neutrinos are not that massive. By WIMPS, we are really considering something heavier. It is just a matter of scale :)
but they do have mass or they would not collide ....
interact , it's a very strange world ... neutrinos are virtually massless but they DO have mass, dark matter is hoped to have mass or it might never be detected (and it wouldnt be matter without mass), a foton has zero mass, unless it's moving, so it collides with certain surfaces , bounces back or gets slowed down and its trajectory altered (in water or glass or something)
i have learned quite a few bits so far but truly the more i see the less i know i know, i do understand why it would take a split personality to be a physicist now : its impossible to cram all that data in one single brain
thank you
They do. I had only said "that massive". Dark matter is expected to be much heavier than neutrinos. In the same way, a WIMP is much more massive than a neutrino. Does it clarify?
it does, thank you, i dont know where you get the time and motivation to answer to each and every one :)
its so hot here my brain is melting out of my ears but i think i'm gonna give astrophysics in a hurry another run for the money, i wasnt quite focused last time, didnt get far past the planck era :)
thanks again