Results 1 to 10 of about 47,717 (99)

A Line-of-Sight Integration Approach to Cosmic Microwave Background Anisotropies [PDF]

open access: bronze, 1996
We present a new method for calculating linear cosmic microwave background (CMB) anisotropy spectra based on integration over sources along the photon past light cone.
Uroš Seljak, Matías Zaldarriaga
openalex   +2 more sources

Probing Cosmic Inflation with the LiteBIRD Cosmic Microwave Background Polarization Survey [PDF]

open access: yesProgress of Theoretical and Experimental Physics, 2022
LiteBIRD the Lite (Light) satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection, is a space mission for primordial cosmology and fundamental physics.
LiteBIRD Collaboration E. Allys   +185 more
semanticscholar   +1 more source

New physics from the polarized light of the cosmic microwave background [PDF]

open access: yesNature Reviews Physics, 2022
The current cosmological model requires new physics beyond the standard model of elementary particles and fields, such as dark matter and dark energy. Their nature is unknown and so is that of the initial fluctuations in the early Universe that led to ...
E. Komatsu
semanticscholar   +1 more source

Improved constraints on cosmic birefringence from the WMAP and Planck cosmic microwave background polarization data [PDF]

open access: yesPhysical Review D, 2022
The observed pattern of linear polarization of the cosmic microwave background (CMB) photons is a sensitive probe of physics violating parity symmetry under inversion of spatial coordinates. A new parity-violating interaction might have rotated the plane
J. R. Eskilt, E. Komatsu
semanticscholar   +1 more source

Cross-Correlating Astrophysical and Cosmological Gravitational Wave Backgrounds with the Cosmic Microwave Background. [PDF]

open access: yesPhysical Review Letters, 2021
General relativity provides us with an extremely powerful tool to extract at the same time astrophysical and cosmological information from the stochastic gravitational-wave backgrounds (SGWBs): the cross-correlation with other cosmological tracers, since
A. Ricciardone   +5 more
semanticscholar   +1 more source

LiteBIRD satellite: JAXA's new strategic L-class mission for all-sky surveys of cosmic microwave background polarization [PDF]

open access: yesAstronomical Telescopes + Instrumentation, 2020
LiteBIRD, the Lite (Light) satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection, is a space mission for primordial cosmology and fundamental physics.
M. Hazumi   +237 more
semanticscholar   +1 more source

Constraints on primordial gravitational waves from the cosmic microwave background [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2020
Searches for primordial gravitational waves have resulted in constraints in a large frequency range from a variety of sources. The standard Cosmic Microwave Background (CMB) technique is to parameterise the tensor power spectrum in terms of the tensor-to-
Thomas J. Clarke, E. Copeland, A. Moss
semanticscholar   +1 more source

Self-interacting neutrinos, the Hubble parameter tension, and the cosmic microwave background [PDF]

open access: yesPhysical Review D, 2020
We perform a comprehensive study of cosmological constraints on non-standard neutrino selfinteractions using cosmic microwave background (CMB) and baryon acoustic oscillation data.
T. Brinckmann   +2 more
semanticscholar   +1 more source

The Atacama Cosmology Telescope: a measurement of the Cosmic Microwave Background power spectra at 98 and 150 GHz [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2020
We present the temperature and polarization angular power spectra of the CMB measured by the Atacama Cosmology Telescope (ACT) from 5400 deg2 of the 2013–2016 survey, which covers >15000 deg2 at 98 and 150 GHz.
Steve K. Choi   +138 more
semanticscholar   +1 more source

Cosmic microwave background bounds on primordial black holes including dark matter halo accretion [PDF]

open access: yes, 2020
Even if massive ($10\,M_\odot \lesssim M \lesssim 10^4 M_\odot$) primordial black holes (PBHs) can only account for a small fraction of the dark matter (DM) in the universe, they may still be responsible for a sizable fraction of the coalescence events ...
P. Serpico   +3 more
semanticscholar   +1 more source

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