Deep-space blasts came again and again and again
Fast radio bursts from deep space have never been seen to repeat — until now.
Ten blasts of radio waves recorded last May and June all come from the same direction, researchers report online March 2 in Nature. So did a signal detected in 2012, say Laura Spitler, an astrophysicist at the Max Planck Institute for Radio Astronomy in Bonn, Germany, and colleagues. All 11 signals were detected at the Arecibo Observatory in Puerto Rico.
Fast radio bursts, or FRBs, last a few milliseconds and, except for one, all appear to originate in other galaxies (SN: 8/9/14, p. 22). For the repeater, each of the signals encountered the same amount of intergalactic plasma, meaning they traveled the same distance. That shared feature makes an ironclad case for a common source, says Duncan Lorimer, an astrophysicist at West