Artigo Revisado por pares

Topological analysis of COBE-DMR cosmic microwave background maps

1994; IOP Publishing; Volume: 423; Linguagem: Inglês

10.1086/187223

ISSN

1538-4357

Autores

Sergio Torres,

Tópico(s)

Scientific Research and Discoveries

Resumo

view Abstract Citations (29) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Topological Analysis of COBE-DMR Cosmic Microwave Background Maps Torres, Sergio Abstract Geometric characteristics of random fields are exploited to test the consistency of density perturbation model spectra with COBE data. These CMB maps are analyzed using the number of anisotropy hot spots and their boundary curvature. CMB maps which account for instrumental effects and sky coverage are Monte Carlo generated. These simulations show that a scale-invariant Harrison-Zeldovich primordial Gaussian density fluctuation spectrum is consistent with the data. The CMB fluctuation coherence angle, based on boundary curvature, gives a spectral index n = 1.2 +/- 0.3. Publication: The Astrophysical Journal Pub Date: March 1994 DOI: 10.1086/187223 Bibcode: 1994ApJ...423L...9T Keywords: Astronomical Maps; Background Radiation; Cosmic Rays; Density (Number/Volume); Microwaves; Radio Astronomy; Topology; Variations; Computation; Computerized Simulation; Cosmic Background Explorer Satellite; Monte Carlo Method; Numerical Analysis; Astrophysics; COSMOLOGY: COSMIC MICROWAVE BACKGROUND full text sources ADS |

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