Five-Year Wilkinson Microwave Anisotropy Probe Observations: Galactic Foreground Emission

dc.contributor.utaustinauthorKomatsu, Eiichiroen_US
dc.creatorGold, B.en_US
dc.creatorBennett, C. L.en_US
dc.creatorHill, R. S.en_US
dc.creatorHinshaw, G.en_US
dc.creatorOdegard, N.en_US
dc.creatorPage, L.en_US
dc.creatorSpergel, D. N.en_US
dc.creatorWeiland, J. L.en_US
dc.creatorDunkley, J.en_US
dc.creatorHalpern, M.en_US
dc.creatorJarosik, N.en_US
dc.creatorKogut, A.en_US
dc.creatorKomatsu, Eiichiroen_US
dc.creatorLarson, D.en_US
dc.creatorMeyer, S. S.en_US
dc.creatorNolta, M. R.en_US
dc.creatorWollack, E.en_US
dc.creatorWright, E. L.en_US
dc.date.accessioned2016-10-28T19:38:22Z
dc.date.available2016-10-28T19:38:22Z
dc.date.issued2009-02en_US
dc.description.abstractWe present a new estimate of foreground emission in the Wilkinson Microwave Anisotropy Probe (WMAP) data, using a Markov chain Monte Carlo method. The new technique delivers maps of each foreground component for a variety of foreground models with estimates of the uncertainty of each foreground component, and it provides an overall goodness-of-fit estimate. The resulting foreground maps are in broad agreement with those from previous techniques used both within the collaboration and by other authors. We find that for WMAP data, a simple model with power-law synchrotron, free-free, and thermal dust components fits 90% of the sky with a reduced chi(2)(v) of 1.14. However, the model does not work well inside the Galactic plane. The addition of either synchrotron steepening or a modified spinning dust model improves the fit. This component may account for up to 14% of the total flux at the Ka band (33 GHz). We find no evidence for foreground contamination of the cosmic microwave background temperature map in the 85% of the sky used for cosmological analysis.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipScience Mission Directorate Office at NASA Headquartersen_US
dc.description.sponsorshipNASA NNG05GE76G, NNX07AL75G S01, LTSA03-000-0090, ATPNNG04GK55G, ADP03-0000-092en_US
dc.identifierdoi:10.15781/T2JH3D511
dc.identifier.citationGold, B., C. L. Bennett, R. S. Hill, G. Hinshaw, N. Odegard, L. Page, D. N. Spergel et al. "Five-year wilkinson microwave anisotropy probe observations: galactic foreground emission." The Astrophysical Journal Supplement Series, Vol. 180, No. 2 (Feb., 2009): 265.en_US
dc.identifier.doi10.1088/0067-0049/180/2/265en_US
dc.identifier.issn0067-0049en_US
dc.identifier.urihttp://hdl.handle.net/2152/43110
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journal Supplement Seriesen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectcosmic microwave backgrounden_US
dc.subjectcosmology: observationsen_US
dc.subjectdiffuse radiationen_US
dc.subjectgalaxy: haloen_US
dc.subjectgalaxy: structureen_US
dc.subjectism: structureen_US
dc.subjectradio-continuum emissionen_US
dc.subjectwmap observationsen_US
dc.subjectspinning dusten_US
dc.subjecttentativeen_US
dc.subjectdetectionen_US
dc.subject408 mhzen_US
dc.subjectradiationen_US
dc.subjectpolarizationen_US
dc.subjectgrainsen_US
dc.subjectskyen_US
dc.subjectabsorptionen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleFive-Year Wilkinson Microwave Anisotropy Probe Observations: Galactic Foreground Emissionen_US
dc.typeArticleen_US

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