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0 pointsqueuebert1y ago0 comments

It's worth noting that we received the neutrinos from Supernova 1987a before the photons. We think that's because the photons have a difficult time escaping the ejecta cloud, while neutrinos stream away freely, but who knows ...

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PaulHoule1y ago

Oddly another detector caught a burst of low energy neutrinos that came a few hours before the burst that everyone accepts was from 1987a

https://www.sciencedirect.com/science/article/pii/S092765051...

Low energy tachyons would go a little faster, but you've got the additional problem of explaining why neutrinos got emitted in a spectral line.

queuebertOP1y ago

That is weird. Is the conventional explanation a flash from one of the last fusion stages right before core collapse?

PaulHoule1y ago

The core collapse itself produces most of the neutrinos. All of these protons are squeezed together with electrons which produces neutrons and neutrinos.

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0 pointsqueuebert1y ago0 comments

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PaulHoule1y ago

Oddly another detector caught a burst of low energy neutrinos that came a few hours before the burst that everyone accepts was from 1987a

https://www.sciencedirect.com/science/article/pii/S092765051...

Low energy tachyons would go a little faster, but you've got the additional problem of explaining why neutrinos got emitted in a spectral line.

queuebertOP1y ago

That is weird. Is the conventional explanation a flash from one of the last fusion stages right before core collapse?

PaulHoule1y ago

The core collapse itself produces most of the neutrinos. All of these protons are squeezed together with electrons which produces neutrons and neutrinos.

1 more reply

j / k navigate · click thread line to collapse