Why ultra-powerful radio bursts are the most perplexing mystery in astronomy

Planck stars as observational probes of quantum gravity

“…The expected signal may include two components [1]: (i) strong impulsive emission in the high-energy gamma spectrum (∼ T eV ), and (ii) strong impulsive signals in the radio, tantalisingly similar to the recently discovered and "very perplexing" [2] Fast Radio Bursts. Both the gamma and the radio components are expected to display a characteristic flattening of the cosmological wavelength-distance relation, which can make them identifiable [3,4].…”