Previous measurements of the energy spectra of these cosmic rays revealed several unexplained features. In general, the ...

Now you can get a $49 spectrum analyzer to go with it ... especially if you don’t care about frequencies below 100 kHz. There are some limitations, of course, but the price is right.

"DSS is a way to share spectrum to coexist with other users. So at a smaller time scale in more granular pieces by frequency," said Carolyn Kahn.

As this happened, photons were emitted in a process known as Cosmological Recombination Radiation (CRR), adding a distortion ...