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

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==Lensing autospectrum  ==
 
==Lensing autospectrum  ==
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#CMB lensing intro
 
#CMB lensing intro
#sensitivity to neutrino mass and other parameters (w, $\Omega_k$)
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#Sensitivity to neutrino mass and other parameters (w, $\Omega_k$)
#foreground challenges
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#Foreground challenges
#*extragalactic polarized sources   
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#*Extragalactic polarized sources   
#**how big of an issue can they be?  The CMBPol study [http://lanl.arxiv.org/abs/0811.3916 0811.3916] shows they give small biases under conservative assumptions, particularly if the resolution is high enough to find sources
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#**How big of an issue can they be?  The CMBPol study [http://lanl.arxiv.org/abs/0811.3916 0811.3916] shows they give small biases under conservative assumptions, particularly if the resolution is high enough to find sources
 
#**They can also be projected out of the estimator (bias-hardening)
 
#**They can also be projected out of the estimator (bias-hardening)
 
#*Galactic dust  
 
#*Galactic dust  

Revision as of 12:07, 17 September 2015

Lensing autospectrum

Alex V. leading discussion, ~15 min

  1. CMB lensing intro
  2. Sensitivity to neutrino mass and other parameters (w, $\Omega_k$)
  3. Foreground challenges
    • Extragalactic polarized sources
      • How big of an issue can they be? The CMBPol study 0811.3916 shows they give small biases under conservative assumptions, particularly if the resolution is high enough to find sources
      • They can also be projected out of the estimator (bias-hardening)
    • Galactic dust
      • Biases from nonzero connected four-point function at high-ell? e.g. 1207.0508
    • Instrumental systematics
    • gain variations, monopole leakagge, quadrupole leakage, pointing offsets
  4. Impact of nonlinear growth of structure?

Lensing by individual DM halos

Neelima leading discussion - ~10 min

  1. mass estimate forecasts
  2. instrument requirements
  3. systematic/foreground challenges (10 min)


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