Topics Topics

• AdvertisementAdvertisement• Planck Newsletter paperPlanck Newsletter paper• Regular paper Regular paper • Policy for use in Planck component separation Policy for use in Planck component separation

paperspapers• Interaction with other Planck WGs: CTP Interaction with other Planck WGs: CTP

already estabilished and working, Level S just already estabilished and working, Level S just estabilished, …estabilished, …

• sub-WGs model building activitysub-WGs model building activity

Critical issuesCritical issues

• Freefree issue fixed (muK written without ``u”)Freefree issue fixed (muK written without ``u”)

• Dust: model in polarization extremely roughDust: model in polarization extremely rough

• Synchrotron: need to work on WMAP and/or Archeops data Synchrotron: need to work on WMAP and/or Archeops data

• Infrared sources: templates at HFI frequencies only, Infrared sources: templates at HFI frequencies only, extrapolation uncertain, polarization very rough extrapolation uncertain, polarization very rough

• Radio sources: improve with incoming dataRadio sources: improve with incoming data

• Sunyaev Zel’dovich only thermal + e-mail lostSunyaev Zel’dovich only thermal + e-mail lost

• CMB without B modes, they’re there but non-Gaussian CMB without B modes, they’re there but non-Gaussian

• ……

Forthcoming MilestonesForthcoming Milestones

• New contributions expected by June 1, 2005, release 0.2 in New contributions expected by June 1, 2005, release 0.2 in July, 2005July, 2005

• Dust polarization (Bernard et al.)Dust polarization (Bernard et al.)• Synchrotron scaling Synchrotron scaling • Comparison with WMAPComparison with WMAP• Radio sources: improve with incoming dataRadio sources: improve with incoming data• Sunyaev Zel’dovich only thermal + e-mail lostSunyaev Zel’dovich only thermal + e-mail lost• CMB without B modesCMB without B modes• CMB B-modes from lensingCMB B-modes from lensing• ……