Direct reconstruction of spherical harmonics from interferometer observations of the CMB polarization

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dc.creatorKim, Jaiseung
dc.date2006-11-13
dc.date2009-04-06
dc.date.accessioned2026-07-07T13:00:23Z
dc.date.available2026-07-07T13:00:23Z
dc.descriptionInterferometric observation of the CMB polarization can be expressed as a linear sum of spherical harmonic coefficients $a_{\pm 2,lm}$ of the CMB polarization. The linear weight for $a_{\pm 2,lm}$ depends on the observational configuration such as antenna pointing, baseline orientation, and spherical harmonic number $l,m$. Since an interferometer is sensitive over a finite range of multipoles, $a_{\pm 2,lm}$ in the range can be determined by fitting $a_{\pm 2,lm}$ for visibilities of various observational configurations. The formalism presented in this paper enables the determination of $a_{\pm 2,lm}$ directly from spherical harmonic spaces without spherical harmonic transformation of pixellized maps. The result of its application to a simulated observation is presented with the formalism.
dc.descriptionv2: references updated, v3: a typo corrected v9: a pdf file problem fixed
dc.identifierhttps://arxiv.org/abs/astro-ph/0611410
dc.identifierhttp://arxiv.org/abs/astro-ph/0611410
dc.identifierMon.Not.Roy.Astron.Soc.375:625-632,2007
dc.identifierdoi:10.1111/j.1365-2966.2006.11285.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225826
dc.subjectAstrophysics
dc.titleDirect reconstruction of spherical harmonics from interferometer observations of the CMB polarization
dc.typetext

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