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Evolution of the cosmic microwave background [PDF]
Physical Review D, 2007 We discuss the time dependence and future of the Cosmic Microwave Background (CMB) in the context of the standard cosmological model, in which we are now entering a state of endless accelerated expansion. The mean temperature will simply decrease until it reaches the effective temperature of the de Sitter vacuum, while the dipole will oscillate as the ...
J. P. Zibin, Adam Moss, Douglas Scott
openaire +3 more sources
Effect of the field self-interaction of General Relativity on the Cosmic Microwave Background Anisotropies [PDF]
Class. Quantum Grav. 39 135003 (2022), 2022 Field self-interactions are at the origin of the non-linearities inherent to General Relativity. We study their effects on the Cosmic Microwave Background anisotropies. We find that they can reduce or alleviate the need for dark matter and dark energy in the description of the Cosmic Microwave Background power spectrum.
arxiv +1 more source
Photonic Integrated Circuits for Microwave Astronomy
Inventions, 2023 One of the main objectives of cosmology is the measurement of the Cosmic Microwave Background (CMB) polarization and, in particular, the so-called B-modes, which could demonstrate the existence of the primordial gravitational waves generated at the early
Guillermo Pascual-Cisneros +2 more
doaj +1 more source
Cosmic Needles versus Cosmic Microwave Background Radiation [PDF]
, 2002 It has been suggested by a number of authors that the 2.7K cosmic microwave background (CMB) radiation might have arisen from the radiation from Population III objects thermalized by conducting cosmic graphite/iron needle-shaped dust.
Aguirre A. N. +16 more
core +2 more sources
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
openaire +4 more sources
Microwave Background Temperature at a Redshift of 6.34 from H2O Absorption [PDF]
, 2022 Distortions of the observed cosmic microwave background imprinted by the Sunyaev-Zel'dovich effect toward massive galaxy clusters due to inverse Compton scattering of microwave photons by high-energy electrons provide a direct measurement of the microwave background temperature at redshifts from 0 to 1.
arxiv +1 more source
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
doaj +1 more source
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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Clustering of hotspots in the cosmic microwave background [PDF]
EPJ Web of Conferences, 2019 The physics behind the origin and composition of the Cosmic Microwave Background (CMB) is a well-established topic in the field of Cosmology. Literature on CMB anisotropies reveal consistency with Gaussianity [1], but these were conducted on full multi ...
Low En Zuo Joel, Yang Abel
doaj +1 more source
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
core +2 more sources