Results 41 to 50 of about 1,037 (174)

Large-scale polarization of the cosmic microwave background radiation

open access: yesPhysical Review D, 1995
14 pages, LaTeX style, IP-ASTP-08-93, 2 revised figures available upon ...
Ng, Ka Lok, Ng, Kin-Wang
openaire   +3 more sources

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

open access: yesFortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Simons Observatory: Characterization of the Large Aperture Telescope Receiver

open access: yesThe Astrophysical Journal Supplement Series
The Simons Observatory (SO) is a ground-based cosmic microwave background (CMB) survey experiment that currently consists of three 0.42 m small-aperture telescopes and one 6 m large-aperture telescope (LAT), located at an elevation of 5200 m in the ...
Tanay Bhandarkar   +43 more
doaj   +1 more source

Different Explanations for the Cosmic Microwave Background Radiation

open access: yes, 2021
In this research, the other reasonable explanations for the cosmic microwave background radiation is revealed. Due to the microwave resolution, it very roughly shows the image of galaxies in the universe. Moreover, the intensity measurement on each pixel of the image is the sum of the incident microwaves from different directions, so the microwave ...
openaire   +2 more sources

All‐sky assimilation impacts of the Tomorrow.io microwave sounder constellation on global weather forecasts

open access: yesQuarterly Journal of the Royal Meteorological Society, Volume 152, Issue 776, April 2026 Part A.
Key Findings: An assimilation methodology is established for the Tomorrow.io microwave sounder (TMS) flying on CubeSats in sun‐synchronous and inclined orbits, and in all cloud scenes. The TMS has a significant impact on weather forecast lead times up to 3 days in the Tropics in a research‐quality numerical weather prediction setting, and yields water ...
Jonathan J. Guerrette   +3 more
wiley   +1 more source

Testing the ΛCDM Cosmological Model with Forthcoming Measurements of the Cosmic Microwave Background with SPT-3G

open access: yesThe Astrophysical Journal
We forecast constraints on cosmological parameters enabled by three surveys conducted with SPT-3G, the third-generation camera on the South Pole Telescope.
K. Prabhu   +102 more
doaj   +1 more source

ƒ(R) Gravity, Relic Coherent Gravitons and Optical Chaos

open access: yesGalaxies, 2014
We discuss the production of massive relic coherent gravitons in a particular class of ƒ(R) gravity, which arises from string theory, and their possible imprint in the Cosmic Microwave Background.
Lawrence B. Crowell, Christian Corda
doaj   +1 more source

Patchy Kinetic Sunyaev–Zel’dovich Effect with Controlled Reionization History and Morphology

open access: yesThe Astrophysical Journal, 2023
Using the novel semi-numerical code for reionization AMBER, we model the patchy kinetic Sunyaev–Zel’dovich (kSZ) effect by directly specifying the reionization history with the redshift midpoint z _mid , duration Δ _z , and asymmetry A _z .
Nianyi Chen   +3 more
doaj   +1 more source

Toward Large Nonradiating Qubits: When Quantum Engineering Meets Photonics

open access: yesAdvanced Quantum Technologies, Volume 9, Issue 3, March 2026.
Nonradiating superconducting qubits suppress radiative losses through photonic‐inspired mechanisms such as anapole states and bound states in the continuum (BICs). This review surveys theoretical foundations and recent implementations of large, wavelength‐scale qubits that confine electromagnetic energy while maintaining coherence.
Alexey Basharin
wiley   +1 more source

Forecast of Foreground Cleaning Strategies for AliCPT-1

open access: yesThe Astrophysical Journal Supplement Series
We report the test results of several independent foreground cleaning pipelines used in the Ali CMB Polarization Telescope experiment (AliCPT-1), a high-altitude cosmic microwave background (CMB) imager in the Northern Hemisphere with thousands of ...
Junzhou Zhang   +19 more
doaj   +1 more source

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