a nice update by S&T
some early postulations were a bit too quick off to print.
http://www.skyandtelescope.com/astro...ng-and-silent/
'The Green Bank search didn't turn up any radio "beacons" or other transmissions in narrow frequency bands, though the analysis of three of the bands isn't complete. Honestly, the Breakthrough Listen team didn't expect to pick up alien broadcasts from this interloper — but, hey, why not try, right?'