CMB tomography: Reconstruction of adiabatic primordial scalar potential using temperature and polarization maps

Journal Article · Wed Jun 15 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.123004· OSTI ID:20709515

Yadav, Amit P. S.; Wandelt, Benjamin D ^[1]

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1. Department of Astronomy, University of Illinois at Urbana-Champaign, 1002 West Green Street, Urbana, Illinois 61801 (United States)

Assuming linearity of the perturbations at the time of decoupling, we reconstruct the primordial scalar potential from the temperature and polarization anisotropies in the cosmic microwave background radiation. In doing so we derive an optimal linear filter which, when operated on the spherical harmonic coefficients of the anisotropy maps, returns an estimate of the primordial scalar potential fluctuations in a spherical slice. The reconstruction is best in a thick shell around the decoupling epoch; the quality of the reconstruction depends on the redshift of the slice within this shell. With high-quality maps of the temperature and polarization anisotropies it will be possible to obtain a reconstruction of potential fluctuation on scales between l=2 and l{approx}300 at the redshift of decoupling, with some information about the three-dimensional shapes of the perturbations in a shell of width 250 Mpc.

• OSTI ID: 20709515
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 12 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANISOTROPY
COSMIC RADIATION
COSMOLOGY
DECOUPLING
DISTURBANCES
FILTERS
FLUCTUATIONS
POLARIZATION
POTENTIALS
RADIOWAVE RADIATION
RED SHIFT
RELICT RADIATION
SCALARS
THREE-DIMENSIONAL CALCULATIONS
TOMOGRAPHY