Results 91 to 100 of about 128,427 (267)

Cosmic Microwave Background Anisotropy Observing Strategy Assessment [PDF]

open access: yes, 1996
I develop a method for assessing the ability of an instrument, coupled with an observing strategy, to measure the angular power spectrum of the cosmic microwave background (CMB).
Lloyd Knox, Tegmark M.
core   +2 more sources

Analyzing Earth's Position based on the Anisotropic Characteristics of Cosmic Microwave Background Radiation

open access: yesJPFT (Jurnal Pendidikan Fisika dan Teknologi), 2023
This paper elaborates on the results of an exhaustive study regarding the Earth's position in the universe based on the Cosmic Microwave Background (CMB) radiation map, which is the latest discovery in modern astronomy.
Muhammad Khaidir Komala   +2 more
doaj   +1 more source

Cosmic microwave background constraints for global strings and global monopoles [PDF]

open access: yes, 2017
We present the first cosmic microwave background (CMB) power spectra from numerical simulations of the global O(N) linear σ-model, with N=2,3, which have global strings and monopoles as topological defects.
A. Lopez-Eiguren   +3 more
semanticscholar   +1 more source

Detecting Patchy Reionization in the Cosmic Microwave Background. [PDF]

open access: yesPhysical Review Letters, 2016
Upcoming cosmic microwave background (CMB) experiments will measure temperature fluctuations on small angular scales with unprecedented precision. Small-scale CMB fluctuations are a mixture of late-time effects: gravitational lensing, Doppler shifting of
Kendrick M. Smith, S. Ferraro
semanticscholar   +1 more source

The CMBR Spectrum [PDF]

open access: yes, 1997
A short review of the measured spectrum of the Cosmic Microwave Background Radiation (CMBR) and implications. Extensions of the Kompaneets equation and Sunyaev-Zel'dovich effect are given.Comment: 30 pages, 9 figures from lectures at NATO ASI "The Cosmic
Stebbins, Albert
core   +1 more source

The Cosmic Microwave Background Bispectrum and Inflation [PDF]

open access: yes, 1999
We derive an expression for the non-Gaussian cosmic-microwave-background (CMB) statistic $I_l^3$ defined recently by Ferreira, Magueijo, and G\'orski in terms of the slow-roll-inflation parameters $\epsilon$ and $\eta$.
A. A. Starobinsky   +23 more
core   +2 more sources

Future Prospects on Constraining Neutrino Cosmology with the Ali CMB Polarization Telescope

open access: yesThe Astrophysical Journal, 2023
We forecast the constraints on the parameters of neutrino physics with the constructions of Cosmic Microwave Background (CMB) temperature, E-mode polarization, and lensing spectra for the ground-based Ali Cosmic Microwave Background Polarization ...
Dongdong Zhang   +6 more
doaj   +1 more source

Full-sky Gravitational Lensing Simulation for Large-area Galaxy Surveys and Cosmic Microwave Background Experiments [PDF]

open access: yes, 2017
We present 108 full-sky gravitational lensing simulation data sets generated by performing multiple-lens plane ray-tracing through high-resolution cosmological N-body simulations. The data sets include full-sky convergence and shear maps from redshifts z
R. Takahashi   +6 more
semanticscholar   +1 more source

Demonstration of Cosmic Microwave Background Delensing Using the Cosmic Infrared Background. [PDF]

open access: yesPhysical Review Letters, 2016
Delensing is an increasingly important technique to reverse the gravitational lensing of the cosmic microwave background (CMB) and thus reveal primordial signals the lensing may obscure. We present a first demonstration of delensing on Planck temperature
P. Larsen   +3 more
semanticscholar   +1 more source

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