[willyd]

There was another article saying that these bursts were not coming from deep space but were bouncing off stuff flying in front of the telescope and other radio dishes...hence the short burst.

My money is on this theory.

[Capt. Tom]

from Gizmo.com
For years, astronomers at the Parkes Observatory in Australia have puzzled over these brief but intense bursts, which in some ways appeared to emanate from deep space. But unlike the fast radio bursts we’ve also heard about recently, researchers knew that perytons were actually coming from somewhere nearby snip

But no one suspected perytons were coming from the lunch room, until astronomer Emily Petroff decided to install a real-time radio interference monitor at the Parkes telescope.

National Geographic’s Nadia Drake describes what happened next: In January, the telescope detected three of the [peryton] signals – and the interference monitor picked up three simultaneous interference signatures. The team recognized the interloping frequencies as possibly belonging to a microwave oven.

When Petroff and her colleagues tested their hypothesis, they found they could create perytons on demand simply by opening the oven door before the timer had dinged.