Results 41 to 50 of about 128,427 (267)
Topology and the cosmic microwave background [PDF]
Physics Reports, 2002 Hilarioulsy forgot to remove comments to myself in previous version. Reference added.
Janna Levin, Janna Levin
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CMB anomalies and the effects of local features of the inflaton potential
European Physical Journal C: Particles and Fields, 2017 Recent analysis of the WMAP and Planck data have shown the presence of a dip and a bump in the spectrum of primordial perturbations at the scales $$k=0.002$$ k = 0.002 Mpc $${}^{-1}$$ - 1 and $$k=0.0035$$ k = 0.0035 Mpc $${}^{-1}$$ - 1 , respectively. We
Alexander Gallego Cadavid +2 more
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Cosmic microwave background limits on accreting primordial black holes [PDF]
, 2016 Interest in the idea that primordial black holes (PBHs) might comprise some or all of the dark matter has recently been rekindled following LIGO’s first direct detection of a binary-black-hole merger.
Y. Ali-Haimoud, M. Kamionkowski
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The Cosmic Microwave Background [PDF]
Symposium - International Astronomical Union, 1987 This review summarizes recent observational work on the cosmic microwave background, or 3 K radiation. Recent measurements of its spectrum and large-scale angular distribution are described, as well as searches for small angular scale fluctuations on arcsecond to degree scales.
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Comparing Cosmic Microwave Background Datasets [PDF]
, 1998 To extract reliable cosmic parameters from cosmic microwave background datasets, it is essential to show that the data are not contaminated by residual non-cosmological signals. We describe general statistical approaches to this problem, with an emphasis
A. de Oliveira-Costa +30 more
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Running and Running of the Running of the Scalar Spectral Index in Warm Inflation
Universe, 2023 The next generation of cosmological observations are expected to improve the measurements of several quantities connected to the primordial inflation in the early Universe.
Suratna Das, Rudnei O. Ramos
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The cosmic microwave background [PDF]
Physics World, 2003 Cosmologists can lay claim to addressing some of the most dramatic problems that humankind has to face. In trying to find the origin of the universe and describe its subsequent evolution, it is not surprising that extravagant assertions are made. I sometimes feel that I belong to a legion of researchers suffering from delusions of grandeur.
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IEEE Signal Processing Magazine, 2010 We aim to present a tutorial on the detection, parameter estimation and statistical analysis of compact sources (far galaxies, galaxy clusters and Galactic dense emission regions) in cosmic microwave background observations. The topic is of great relevance for current and future cosmic microwave background missions because the presence of compact ...
Herranz, D., Vielva, Patricio
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Self-Similar Symmetry Model and Cosmic Microwave Background
Frontiers in Applied Mathematics and Statistics, 2016 In this paper, we present the self-similar symmetry (SSS) model that describes the hierarchical structure of the universe. The model is based on the concept of self-similarity, which explains the symmetry of the cosmic microwave background (CMB).
Tomohide eSonoda
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Heating of the intergalactic medium by the cosmic microwave background during cosmic dawn [PDF]
Physical Review D, 2018 The intergalactic medium is expected to be at its coldest point before the formation of the first stars in the universe. Motivated by recent results from the EDGES experiment, we revisit the standard calculation of the kinetic temperature of the neutral ...
T. Venumadhav +3 more
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