Topological analysis of COBE-DMR cosmic microwave background maps
1994; IOP Publishing; Volume: 423; Linguagem: Inglês
10.1086/187223
ISSN1538-4357
Autores Tópico(s)Scientific Research and Discoveries
Resumoview 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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