ET -SORRY WRONG NUMBER?

Are signals possible radio waves created by an alien civilization .Fast bursts of signals coming from an unknown source 5.5 billion light years away are baffling world astronomers.Possible explorations for the waves ;made by merging neutron stars,an evaporating black hole.The waves are quick bright flashes ,last milliseconds ,give out as much energy as the sun  in one day . In 2007 a similar signal was discovered but this was the first time observed live-by using 12 telescopes -AUSTRALIA ,CALIFORNIA,CANARY ISLANDS,CHILE,GERMANY,INDIA waves were checked for other wave lengths -x-ray and infuriated light but nothing found.