These are the most likely sources that the astronomers think this radio signal came from:

“Hidden within an incredibly massive dataset, we found a very peculiar signal that matched all the known characterizes of a FRB, but with a tantalizing extra element that we simply have never seen before,” said team member Dr Jeffrey Peterson, of Carnegie Mellon University.

According to the astronomers, FRB 110523 originated around six billion light-years away inside a highly magnetized region of space, possibly linking it to a supernova or the interior of an active star-forming nebula.

That being said, they still don’t know for sure that it came from those sources.  What do you think?  Feel free to comment with your ideas.

thanks to sci-news.com for the great info

thanks to Jingchuan Yu / Beijing Planetarium for the pic