Massive radio survey reveals our universe's structure at the largest scales

[Admin]

New observations from the MeerKAT radio survey suggest our estimates of the cosmic dipole effect are actually in line with the large scale structure of the universe.

Massive radio survey reveals our universe's structure at the largest scales : Read more

 

[Unclear Engineer]

I am not understanding why the number of "radio sources" should be higher in one direction and lower in the opposite direction due to Earth's motion "through space".

I would think that the number of sources should be the same in all directions, but the wavelengths of similar types of sources would be shifted by the same amount in opposite directions due to the relative speed differences.

Can somebody please explain why the number of sources changes? Is it just that the peak sensitivity of the detector is not broad enough to detect the shifted frequencies through the shifts?