Why did we observe the neutrinos from SN 1987A before the light pulse? a. Neutri

Question

Why did we observe the neutrinos from SN 1987A before the light pulse?

a. Neutrinos are massless and can therefore travel slightly faster than light.

b. The neutrinos were produced during neutronization, which occurred about 3 hours before core collapse.

c. The photons were delayed by about 3 hours because they interacted with the collapsing star’s enormous magnetic field.

d. The photons were not able to escape the star until the shock wave reached the surface, which required about 3 hours.However, the neutrinos were able to leave immediately.

e. The supernova went off in the Large Magellanic Cloud, which contains a lot of dust. It was therefore not visible until the blast wave cleared away the dust, which took about 3 hours. However, the neutrinos were able to exit immediately

Explanation / Answer

The photons were not able to escape the star until the shock waves reached the surface, which required about 3 hours. However, the neutrinos were able to leave immediately.

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