Direct Imaging of the CMB from Space

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dc.creatorJanssen, Michael A.
dc.creatorScott, Douglas
dc.creatorWhite, Martin
dc.creatorSeiffert, Michael D.
dc.creatorLawrence, Charles R.
dc.creatorGorski, Krzysztof M.
dc.creatorDragovan, Mark
dc.creatorGaier, Todd
dc.creatorGanga, Ken
dc.creatorGulkis, Samuel
dc.creatorLange, Andrew E.
dc.creatorLevin, Steven M.
dc.creatorLubin, Philip M.
dc.creatorMeinhold, Peter
dc.creatorReadhead, Anthony C. S.
dc.creatorRichards, Paul L.
dc.creatorRuhl, John E.
dc.date1996-02-02
dc.date1996-02-02
dc.date.accessioned2026-07-07T09:01:56Z
dc.date.available2026-07-07T09:01:56Z
dc.descriptionFundamental information about the Universe is encoded in anisotropies of the Cosmic Microwave Background (CMB) radiation. To make full use of this information, an experiment must image the entire sky with the angular resolution, sensitivity, and spectral coverage necessary to reach the limits set by cosmic variance on angular scales >~10'. Recent progress in detector technology allows this to be achieved by a properly designed space mission that fits well within the scope of NASA's Medium-class Explorer program. An essential component of the mission design is an observing strategy that minimizes systematic effects due to instrumental offset drifts. The detector advances make possible a `spin chopping' approach that has significant technical and scientific advantages over the strategy used by COBE, which reconstructed an image of the sky via inversion of a large matrix of differential measurements. The advantages include increased angular resolution, increased sensitivity, and simplicity of instrumentation and spacecraft operations. For the parameters typical of experiments like the Primordial Structures Investigation (PSI) and the Far InfraRed Explorer (FIRE), we show that the spin-chopping strategy produces images of the sky and power spectra of CMB anisotropies that contain no significant systematic artifacts.
dc.description15 pages, including 8 figures. Full resolution and colour versions of simulations and full versions of the preprint available at ftp://omega.jpl.nasa.gov/pub/wwwdir/PSI/papers.htm . Further details of PSI and FIRE are available at http://astrophysics.jpl.nasa.gov/PSI/ and http://caseymac.jpl.nasa.gov/fire/fire.html, respectively
dc.identifierhttps://arxiv.org/abs/astro-ph/9602009
dc.identifierhttp://arxiv.org/abs/astro-ph/9602009
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/148452
dc.subjectAstrophysics
dc.titleDirect Imaging of the CMB from Space
dc.typetext

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