Fact-Checking this Viral Bottle Trick

I'm sure you already know this but there's a lot of information suggesting that sonoluminescence is a product of the heat produced during cavitation collapse. depending on what you read, the temperatures recorded are between 5,000 f and 35,000 f. So roughly as hot as anything from and oxyacetylene torch to hotter than the surface of the sun and almost as hot as lighting. Not hard to imagine it might give of a little flash of light. I tried to look up the emitted light spectrum for cavitation sonoluminesence but ... I didn't take physics in school and it got a little over my head. I would think that the electromagnetic frequencies emitted would be a huge clue in understanding exactly what is causing it.