Non-Gaussian CMBR angular power spectra
نویسندگان
چکیده
منابع مشابه
Rapid Calculation of Theoretical Cmb Angular Power Spectra
We have developed a fast method for predicting the angular power spectrum, Cl, of the cosmic microwave background given cosmological parameters and a primordial power spectrum of perturbations. After pre–computing the radiation temperature and gravitational potential transfer functions over a small sub–space of the total model parameter space, the rest of the model space (six or more cosmologic...
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The angular power spectra of the infrared maps obtained by the DIRBE (Diffuse InfraRed Background Experiment) instrument on the COBE1 satellite have been obtained by two methods: the Hauser-Peebles method previously applied to the DMR maps, and by Fourier transforming portions of the all-sky maps projected onto a plane. The two methods give consistent results, and the power spectrum of the high...
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aDipartimento di Fisica G. Occhialini, Università di Milano, Bicocca bI.N.F.N., Sezione di Milano, Via Celoria 16, I-20133 Milano, Italy cI.Te.S.R.E.-C.N.R., Via P. Gobetti 101, I-40129 Bologna, Italy dDipartimento di Fisica, Università di Firenze, Via S. Marta 3, I-50139 Firenze, Italy eDipartimento di Astronomia, Università di Bologna, Via Ranzani 1, I-40127 Bologna, Italy fDepartment of Phys...
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Gravitational lensing of the Cosmic Microwave Background (CMB) encodes cosmological information in the observed anisotropies of temperature and polarization. Accurate extraction of this additional information requires precise modeling of the covariance matrix of the power spectra of observed CMB fields. We introduce a new analytical model to describe the non-Gaussian structure of this covarianc...
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Brains consist of complex networks of neurons possessing highly non-linear interactions, suggesting that neural systems will show cooperative dynamics. Previous studies of the non-Gaussian statistics of 1 f noise in spin glasses and amorphous semiconductors have revealed important information concerning interaction kinetics not available through other techniques. Five male Brown-Norway-Cross ra...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1995
ISSN: 0556-2821
DOI: 10.1103/physrevd.52.4361