Posted: Feb 02, 2015 11:44 pm
Full paper: A Joint Analysis of BICEP2/Keck Array and Planck Data
This is the killer plot:
The black dots with error bars show the original BICEP/Keck results, the purple dots with error bars show the corrected results after subtracting the dust contribution found by Planck. The red line is the B-mode polarization that’s expected from gravitational lensing alone (so without primordial gravitational waves). Clearly, the new results show no hint of primordial gravitational waves, except for a slight (not statistically significant) excess signal around multipoles of order 200.
So for now, the champagne can be put back in the fridge. It's important to emphasize though that the BICEP experiment only looked at a small patch of the sky and at one particular frequency. We'll have to wait and see what the other ongoing experiments will reveal.
This is the killer plot:
The black dots with error bars show the original BICEP/Keck results, the purple dots with error bars show the corrected results after subtracting the dust contribution found by Planck. The red line is the B-mode polarization that’s expected from gravitational lensing alone (so without primordial gravitational waves). Clearly, the new results show no hint of primordial gravitational waves, except for a slight (not statistically significant) excess signal around multipoles of order 200.
So for now, the champagne can be put back in the fridge. It's important to emphasize though that the BICEP experiment only looked at a small patch of the sky and at one particular frequency. We'll have to wait and see what the other ongoing experiments will reveal.