Talk:Cosmic microwave background polarization

Remove image credit?

Should we remove the image credit from the image caption in the article? It says ESA. There is credit already in the image's description page, and most if not all other images on the encyclopedia don't give any credit in the image captions. Sofia Koutsouveli (talk) 15:26, 20 March 2014 (UTC)[reply]

"Level" of first B-mode

Where does that r = 0.20+0.07
−0.05 value come from, since i couldn't see it in either of the two sources after it? And what kind of "level" does it represent anyway? -- Jokes_Free4Me (talk) 21:38, 7 May 2014 (UTC)[reply]

The BICEP2 paper, which is the original source of that, is here. As for what it represents, it's the amount of power present in graviational waves compared to the amount of power present in good-old-fashioned scalar density perturbations in the very early universe. Lanless (talk) 16:19, 23 May 2014 (UTC)[reply]

I added you explanation to the article, but it still could be better. The whole article is way too technical. What exactly is "r"? (radius?) 0.2 units of what? etc.

r is the so-called tensor-to-scalar ratio

Old information - primordial B-modes not observed

A recent joint analysis of Planck, BICEP2 and Keck array shows that the primordial B-modes cannot be confirmed as measured.