Difference between revisions of "UMICH-2015:ChallengeDelensing"

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*'''Blake''': need high sensitivity lensing map.Plot shows residual delensed B-mode noise on large scales vs. noise of the high-res lens-reconstruction-experiment.
 
*'''Blake''': need high sensitivity lensing map.Plot shows residual delensed B-mode noise on large scales vs. noise of the high-res lens-reconstruction-experiment.
  
[[File:deLensing.png|500px]]
+
[[File:deLensing.png|500px]][[File:deLensNoise.png|500px]]
  
 
Improvement from external delensing isn't good enough:
 
Improvement from external delensing isn't good enough:

Revision as of 09:41, 20 September 2015

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Delensing

Blake Sherwin, Olivier Dore, Chris Sheehy, Josquin Errard, Stephen Feeney, Alex van Engelen, Neelima Sehgal, Hiranya Peiris, Anthony Challinor...

What is the impact of delensing on r, and on nt or BB wiggles?

  • Anthony C - let's think about trying to measure the B-mode spectrum shape
  • Stephen Feeney: some forecasts of S4 performance on r:

DeLensing feeney1.png

500px


What sensitivity and resolution do we need for the lensing map?

  • Is external lensing map good enough (e.g. CIB?) - No!
  • Blake: need high sensitivity lensing map.Plot shows residual delensed B-mode noise on large scales vs. noise of the high-res lens-reconstruction-experiment.

DeLensing.pngDeLensNoise.png

Improvement from external delensing isn't good enough:

DeLensingExt.png

High resolution is good:

DeLensingRes.png