Band-power reconstruction of the primordial fluctuation spectrum by the maximum likelihood reconstruction method

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dc.creatorNagata, Ryo
dc.creatorYokoyama, Jun'ichi
dc.date2008-12-25
dc.date2009-02-19
dc.date.accessioned2026-07-07T12:43:22Z
dc.date.available2026-07-07T12:43:22Z
dc.descriptionThe primordial curvature fluctuation spectrum is reconstructed by the maximum likelihood reconstruction method using the five-year Wilkinson Microwave Anisotropy Probe data of the cosmic microwave background temperature anisotropy. We apply the covariance matrix analysis and decompose the reconstructed spectrum into statistically independent band-powers. The prominent peak off a simple power-law spectrum found in our previous analysis turn out to be a $3.3σ$ deviation. From the statistics of primordial spectra reconstructed from mock observations, the probability that a primordial spectrum including such excess is realized in a power-law model is estimated to be about 2%.
dc.description9 pages
dc.identifierhttps://arxiv.org/abs/0812.4585
dc.identifierhttp://arxiv.org/abs/0812.4585
dc.identifierPhys.Rev. D79 (2009) 043010
dc.identifierdoi:10.1103/PhysRevD.79.043010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220396
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Phenomenology
dc.titleBand-power reconstruction of the primordial fluctuation spectrum by the maximum likelihood reconstruction method
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