Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-11-23
Mon.Not.Roy.Astron.Soc. 307 (1999) 977
Astronomy and Astrophysics
Astrophysics
9 pages AAS LaTex with 4 included figures
Scientific paper
10.1046/j.1365-8711.1999.02687.x
We explore the possible impact of galactic and extragalactic foregrounds on measurements of the cosmic microwave background (CMB). We find that, given our present understanding of the foregrounds, they are unlikely to qualitatively affect the ability of the MAP and Planck satellites to determine the angular power spectrum of the CMB, the key statistic for constraining cosmological parameters. Sufficiently far from the galactic plane, the only foregrounds that will affect power spectrum determination with any significance are the extragalactic ones. For MAP we find the most troublesome foregrounds are radio point sources and the thermal Sunyaev-Zeldovich (SZ) effect. For Planck they are these same radio point sources and the Far Infrared Background. Prior knowledge of the statistics of the SZ component (either via theoretical calculation, or higher frequency observations of just a few percent of the sky, such as will be done by balloon-borne experiments) may significantly improve MAP's determination of the CMB power spectrum. We also explore the foreground impact on MAP and Planck polarization power spectrum measurements.
No associations
LandOfFree
Forecasting foreground impact on cosmic microwave background measurements does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Forecasting foreground impact on cosmic microwave background measurements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Forecasting foreground impact on cosmic microwave background measurements will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-114378