The story of Supernova 1987 A

Ocurred in Large Magellanic Cloud, 170 thousand light years from us.

Progenitor star: Sanduleak -69o 202, a blue supergiant.


Is the theory right?

At the core of the theory, so to speak, is the production of vast numbers of neutrinos.

Neutrino detectors available at the time.

Prediction: each detector should see 10 or so neutrinos from SN 1987A in a space of about 10 seconds.


Timing (times in Universal Time)

Conclusion: One surprise:

What do we see now?

Davison E. Soper, Institute of Theoretical Science, University of Oregon, Eugene OR 97403 USA