Difference between revisions of "UCSD-2019: Cross-Cut: Delensing"

From CMB-S4 wiki
Jump to: navigation, search
(Agenda)
(Agenda)
Line 21: Line 21:
 
== Agenda ==
 
== Agenda ==
  
On-going work related to delensing (60 min):  
+
1) On-going work related to delensing (50 min - 1hr):  
  
 
* Foregrounds
 
* Foregrounds
Line 30: Line 30:
 
* N_eff
 
* N_eff
 
** Selim Hotinli on delensing for N_eff
 
** Selim Hotinli on delensing for N_eff
 
 
* f_NL
 
* f_NL
 
** Will Coulton on delensing for f_NL
 
** Will Coulton on delensing for f_NL
  
What are some of the questions that need answering for moving CMB-S4 to CD-1 readiness in delensing (1hr):   
+
2) What are some of the questions that need answering for moving CMB-S4 to CD-1 readiness in delensing (1hr):   
 
* How map non-idealities impact delensing efficiency (Toshiya Namikawa)
 
* How map non-idealities impact delensing efficiency (Toshiya Namikawa)
 
* Instrument effects (Kimmy Wu)
 
* Instrument effects (Kimmy Wu)

Revision as of 18:30, 12 October 2019

Link back to agenda

Charge

General charge to all parallels:

We need to use the October collaboration meeting to advance our preparations for CD-1. Right away, we need to:

  • Identify key decisions that must be made (and justified) prior to CD-1,
  • Make progress on (or actually make) those decisions,
  • Lay out a timeline and process for making each decision, consistent with the post-decision work and internal reviews that will be needed to complete preparations for CD-1,
  • Ensure that those timelines and processes are understood and supported by the collaboration, and that we (together) believe we can follow them.

Specific charge to this delensing cross-cut session:

  • For the de-lensing LAT, what are the benefits and costs of variation in angular resolution (dish size) for legacy survey science goals?
  • What is minimum dish size / throughput needed for delensing? Would multiple smaller telescopes be better than one bigger one? (both r + Neff)
  • What are the effects of foregrounds on delensing (both for r and Neff)

Remote Attendance

Zoom link

Agenda

1) On-going work related to delensing (50 min - 1hr):

  • Foregrounds
    • Marius Millea on incorporating foregrounds in Bayesian delensing
    • Anton Baleato Lizancos on biases to delensing from CIB and EB estimator
    • DW Han and Alex van Engelen on Galactic foreground impacts
    • Kimmy Wu on CIB non-Gaussianity impacts on delensed bandpower covariances
  • N_eff
    • Selim Hotinli on delensing for N_eff
  • f_NL
    • Will Coulton on delensing for f_NL

2) What are some of the questions that need answering for moving CMB-S4 to CD-1 readiness in delensing (1hr):

  • How map non-idealities impact delensing efficiency (Toshiya Namikawa)
  • Instrument effects (Kimmy Wu)
  • What inputs are needed in order to address session charges

Notes