We're going to have a problem if we are looking at cosmic background radiation and thinking of our own galaxy as having some bearing on the measurement.
"I didn't read the article carefully before posting" mode, ON:
Unless the area in which they observed the anomaly in the background radiation happens to be in our galaxy.
And that reminds me of a story...
A bunch of cosmologist and astronomer geeks once planned to put up a huge parabolic antennae in a particular neighborhood.
Some of the residents complained that this would interfere with their TV reception.
The scientists were amused. "No, you don't understand", they said. This dish merely detects, it doesn't transmit at all, so it CAN'T interfere.
And they dutifully went ahead and constructed the facility.
After it was up, there was one crotchety old man who complained that, sure enough, he knew it, his TV reception was out.
The scientists tried in vain to explain to him that their site didn't transmit, there must be some other cause, etc.
They were at an impasse when someone happened to notice that the facility was right IN BETWEEN (line-of-site) the man's house and the TV station.
It didn't interfere with the TV signal, just got in its way.
Cheers!