Difference between revisions of "UMICH-2015: Inflation break-out session 1"

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*What is the impact of delensing on r, and on nt or BB wiggles?
 
*What is the impact of delensing on r, and on nt or BB wiggles?
 
*How does internal CMB delensing compare to external (e.g. CIB)?
 
*How does internal CMB delensing compare to external (e.g. CIB)?
*What sensitivity and resolution do we need for the lensing map?  
+
*What sensitivity and resolution do we need for the lensing map?
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===Delensing===
 
(Blake Sherwin, Olivier Dore, Chris Sheehy, Josquin Errard, Stephen Feeney, Alex van Engelen, Neelima Sehgal, Anthony Challinor...)
 
 
 
====What is the impact of delensing on r, and on nt or BB wiggles?====
 
 
 
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====How does internal CMB delensing compare to external (e.g. CIB)?====
 
 
 
*Blake says external cleaning won't be good enough for 1 uK noise levels.
 
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====What sensitivity and resolution do we need for the lensing map?====
 
 
 
*Blake: need high sensitivity lensing map
 
 
 
[[File:deLensing.png|500px]]
 
 
 
 
 
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Revision as of 08:43, 20 September 2015

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B-modes challenges: foregrounds and de-lensing

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Foregrounds

  • What are our latest estimates of foreground levels post-Planck?
  • What simulations and tools do we have for forecasting impact on r? (details for Tuesday)
  • What are still physical unknowns?
  • Do we need new data at <40 GHz and >230 GHz? (and 60 GHz?)
  • How important is large sky area?
  • What is the path to a convincing claim that a B-mode signal is not foregrounds?

Delensing

  • What is the impact of delensing on r, and on nt or BB wiggles?
  • How does internal CMB delensing compare to external (e.g. CIB)?
  • What sensitivity and resolution do we need for the lensing map?