n MNASSA : Monthly Notes of the Astronomical Society of South Africa - 25 Years after Supernova 1987A : observers page

Volume 71, Issue 3_4
  • ISSN : 0024-8266



At 07:35 UTC (09:35 SAST) on Monday morning, 23 February 1987, a wave of neutrinos swept through the Earth, heralding the appearance of the brightest supernova (SN) to be observed for almost 400 years and since the invention of the telescope. After passing through the Earth, a total of 13 neutrinos were detected over a period of about 10 seconds, in Japan, the USA and Russia. They were only noticed when records were examined after the optical detection.

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