Planck Diffuse Component Separation TWG2'1 Review

1
Planck Diffuse Component SeparationTWG2.1 Review

• coordinators
• Carlo Baccigalupi, Simon Prunet,
• Michael Linden-VornleSantander, October 14, 2001

2
TWG2.1 24 Members

• Mark Ashdown, Vladislav Stolyarov
  (CPAC, Cambridge)
• Carlo Baccigalupi, Francesca Perrotta
  (SISSA, Trieste)
• James Bartlett, Alain Bouquet, Jacques
  Delabrouille,
• Yannick Giraud-Heraud, Jean Kaplan
  (CdF, Paris)
• Luigi Bedini, Emanuele Salerno, Anna Tonazzini,
• Ercan Kuruoglu
  
  (IEI, Pisa)
• Carlo Burigana, Lucia Popa
  (TeSRE, Bologna)
• Krzysztof Gorski
  (MPA,
  Munich)
• Eric Hivon, Jeffrey Jewell, Steve Levin
  (JPL, Pasadena)
• Patrick Leahy
  
  (Jodrell Bank)
• Michael Linden-Vornle
  (DSRI, Copenaghen)
• Davide Maino
  
  (Milano)
• Simon Prunet
  
  (IAP, Paris)
• Benjamin Wandelt
  
  (Princeton)

3
TWG2.1 Criticalities

• Unique package
• Flexibility
  (results,ongoing)
• Maps, Harmonics TODs (results,ongoing)
• Blind and non-Blind merging (results,ongoing)
• Polarisation
  (results)
• Point Sources Interface
  (results,ongoing)
• Technique inventing development (ongoing)
• Test with incoming CMB data (results,ongoing)

4
TWG2.1 Results Review
Flexibility indications of stability against
spectral index variation of ICA based techniques
(Baccigalupi et al. 2002) effective removing of
instrumental noise patterns (Delabrouille,
Patanchon, Audit 2002 built-in non-stationary
noise techniques (Kuruoglu 2002)
Maps, Harmonics TODs MEM WF matching with
the harmonic space analysis (Stolyarov et al.
2002, Challinor et al. 2002 Prunet et al. 2001)
Blind non-Blind merging blind estimation of
separation matrix Wiener filtering (Cardoso et
al. 2002) constraining elements of the
separation matrix source distributions
(Bedini, Salerno, Tonazzini 2001)
Polarisation application of FastICA to polarised
maps (Baccigalupi et al. 2002)
Point source interface results of matching MEM
MHW (Vielva et al. 2001)
Technique inventing development EM algorithm
IFA technique (Snoussi et al. 2001, Bedini,
Salerno, Tonazzini 2001)
Testing with incoming CMB data Archeops
(Patanchon et al. 2002)
5
TWG2.1 Activity Review
Flexibility preparing study of FastICA stability
against principal systematics parameter
adjustment by spectral matching
Blind non-Blind merging testing IFA on
simulations
Point source interface matching MHW with FastICA
Testing with incoming CMB data spectral matching
on Archeops, FastICA MEM for COBE, preparing
for MAP
Technique inventing development imprint on
non-Gaussianity Of MEM based component separation
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TWG2.1 Urgent Tasks

• Deal with Planck systematics
• Establish a Strategy for MAP
• Nullify distances
• TWG2.1 Web Site
• ...