Tau.Neutrino said:
Astronomers think they have discovered what is causing those mysterious cosmic radio bursts
Three thousand thousand thousand years ago, give or take a few million years, in a galaxy 3 thousand thousand thousand light years away, give or take a few million light years, a fast radio burst from the centre of a dwarf galaxy far beyond the Milky Way generated as much energy as 500 million suns in milliseconds.
more…
> But there’s one — and, so far, only one — that has delivered roughly 30 signals from the same location, enabling the astronomers to focus on the spot and study it closely.
> What they’ve found, in studies that are awaiting peer review, is that FRB 121102, which was originally believed to be emanating from within our Milky Way, is located instead in a giant stellar nursery near the centre of a faint dwarf galaxy 3 billion light years away.
> strengthens the theory that the densest object in the known universe, a magnetar — a highly magnetic, 19-km-wide neutron star that forms after a star collapses and emits regular radio pulses as it spins — was the cause of the repeating FRB. But it also creates a new mystery: Why is this FRB repeating when the 22 others that have been observed through history aren’t?
So, an LGM but not “little green men”. Pity. Still not proved, though. I need to check if the repeats are regular, and if so how regular.