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Special Issue on Modified Gravity Approaches to the Tensions of ΛCDM: Goals and Highlights

open access: yesUniverse
The standard cosmological model, known as ΛCDM, has been remarkably successful in providing a coherent and predictive framework for understanding the Universe’s evolution, its large-scale structure, and cosmic microwave background (CMB) radiation [...]
Eleonora Di Valentino   +2 more
doaj   +1 more source

CMB-S4: Foreground-cleaning Pipeline Comparison for Measuring Primordial Gravitational Waves

open access: yesThe Astrophysical Journal
We compare multiple foreground-cleaning pipelines for estimating the tensor-to-scalar ratio, r , using simulated maps of the planned CMB-S4 experiment within the context of the South Pole Deep Patch.
Federico Bianchini   +9 more
doaj   +1 more source

Can Chameleon Fields Be the Source of the Dark Energy Dipole and the Cosmic Microwave Background Dipole?

open access: yesThe Astrophysical Journal
Recent research reveals that the Local Group is in motion toward ( l , b ) = (276, 30) relative to the cosmic background radiation, manifesting a velocity of 600 km s ^−1 , a phenomenon recognized as the cosmic background radiation dipole or cosmic ...
Muhammad Yarahmadi, Amin Salehi
doaj   +1 more source

Evaluation of the Single-component Thermal Dust Emission Model in Cosmic Microwave Background Experiments

open access: yesThe Astrophysical Journal Supplement Series
It is well known that multiple Galactic thermal dust emission components may exist along the line of sight, but a single-component approximation is still widely used, since a full multicomponent estimation requires a large number of frequency bands that ...
Hao Liu, Jia-Rui Li, Yi-Fu Cai
doaj   +1 more source

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