My interpretation of the paper:

Astronomers processed a bunch of data from a fairly new antenna array (CHIME) and saw a giant burst of energy in radio range (above 20khz), localized to a 10 light year “bubble” of space, that is relatively close to us, as a novel measurement precision

James Webb then also correlated an IR signal near this radio signal

So it seems to me that we’re finally just seeing for the first time the actual data that is coming into earth, a lot of the analysis seems to think this is a new thing but in fact it’s simply just new for us to be able to measure

CHIME nor these methods existed previously to the last 5 years so we’re likely going to see a lot of what we just haven’t been seeing.

It doesn’t mean it’s new it just means astronomers are getting better tools to continue to refine the granularity of measurements

A cool thing about CHIME is that they focus after the fact, by the way they process the data.

A nice overview talk can be found here[1], which also goes into the objects it detects such as FRBs.

CHIME is also used to detect millisecond pulsars, and is part of the NANOGrav[2] pulsar timing array, which measures very low frequency gravitational waves from merging supermassive black holes and such.

[1]: https://pirsa.org/22100067

[2]: https://nanograv.org/15yr/Summary/Timing

This is pretty pedantic, but allocated radio frequencies start at 8.3 kHz.

https://www.fcc.gov/sites/default/files/fcctable.pdf

My interpretation of the title (did not read the article but I don't understand anything about astrophysics anyways): ALIENS!