Re:What about a supernova? (Score 1)

There are several types of Neutrinos. I wonder which of those were detected during SN1987A few hours before light arrived and if they are same as those in CERN experiment.

These results are 60 ns in about 2 ms, or a factor of 0.00003. The LMC (home of SN1987A) is 160,000 light years away, so this would have the neutrino signal arriving several years ahead of the optical signal.

Those several years = 4.8 years if the factor 0.00003 is correct. So maybe there were another burst arriving from SN. If I calculate right it should arrive around April 1982. But was anyone looking for those at that time? In 1987 three detectors detected those neutrinos bursts. Kamiokande-II started data taking in 1985. So no chance that this could be recorded there. IMB detector started to take data in 1982 (i did not find any precise date), and it has been closed for a while. I guess it will be hard to find any logs. So it leaves only one detector - Baksan, which operates since 1977. If the log at this observatory from 1982 still exists it would be good idea to check them out. Maybe there will be some anomaly around the time-frame which noone paid attention at that time.