Probing the Largest Cosmological Scales with the CMB-Velocity Correlation

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dc.creatorFosalba, Pablo
dc.creatorDoré, Olivier
dc.date2007-01-28
dc.date2008-01-14
dc.date.accessioned2026-07-07T11:00:45Z
dc.date.available2026-07-07T11:00:45Z
dc.descriptionCross-correlation between the CMB and large-scale structure is a powerful probe of dark-energy and gravity on the largest physical scales. We introduce a novel estimator, the CMB-velocity correlation, that has most of his power on large scales and that, at low redshift, delivers up to factor of two higher signal-to-noise ratio than the recently detected CMB-dark matter density correlation expected from the Integrated Sachs-Wolfe effect. We propose to use a combination of peculiar velocities measured from supernovae type Ia and kinetic Sunyaev-Zeldovich cluster surveys to reveal this signal and forecast dark-energy constraints that can be achieved with future surveys. We stress that low redshift peculiar velocity measurements should be exploited with complementary deeper large-scale structure surveys for precision cosmology.
dc.descriptionMatches version accepted for publication in PRD (November 2007 issue)
dc.identifierhttps://arxiv.org/abs/astro-ph/0701782
dc.identifierhttp://arxiv.org/abs/astro-ph/0701782
dc.identifierPhys.Rev.D76:103523,2007
dc.identifierdoi:10.1103/PhysRevD.76.103523
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187758
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleProbing the Largest Cosmological Scales with the CMB-Velocity Correlation
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