And muons can generate Cherenkov light.

ECONOMIST: Neutrino astronomy

The sort of light they are looking for is called Cherenkov radiation.

ECONOMIST: Neutrino astronomy: Deep and meaningful | The

The High-Altitude Water Cherenkov Observatory or Hawc, high on a Mexican plain, now holds the record for the highest-energy light it can capture.

BBC: Hawc gamma-ray telescope captures its first image