Results 121 to 130 of about 661,161 (337)

Reversible Phase Transitions Enable Cyclic Isothermal CO2 Capture in Redox‐Activated Perovskite‐Structured Sorbents

open access: yesAdvanced Functional Materials, EarlyView.
Perovskite‐structured SrMnO3 can cyclically and reversibly capture and release CO2 via redox‐enabled phase transitions at constant temperature. The efficacy of this novel redox‐activated CO2 sorbent is demonstrated via sorption‐enhanced steam methane reforming.
Leo Brody   +9 more
wiley   +1 more source

Self-interacting Dark Matter Interpretation of Crater II

open access: yesThe Astrophysical Journal Letters
The satellite galaxy Crater II of the Milky Way is extremely cold and exceptionally diffuse. These unusual properties are challenging to understand in the standard model of cold dark matter.
Xingyu Zhang   +3 more
doaj   +1 more source

Investigating the Dark Sector: Attempting to Resolve the Hubble Tension with a Modified Model of the Universe [PDF]

open access: yes, 2019
The standard model of Big Bang cosmology is the ΛCDM model, which incorporates cold dark matter and dark energy, two mysterious components of what is known as the “dark sector” of the universe, or sector not directly observable with light.
Clarke, Emma
core   +1 more source

Formation of galaxies and large-scale structure with cold dark matter [PDF]

open access: green, 1984
George R. Blumenthal   +3 more
openalex   +1 more source

On the density of Cold Dark Matter

open access: yes, 2002
The nature of dark matter is increasingly constrained by cosmological data. In this paper, we examine the implications of the Cosmic Microwave Background anisotropy limits on the density of cold dark matter under different theoretical assumptions and combinations of datasets. We infer the constraint $ _{cdm}h^2=0.12\pm0.04$ (at 95% c.l.).
Melchiorri, A., Silk, J.
openaire   +2 more sources

Axion cold dark matter revisited

open access: yesJournal of Physics: Conference Series, 2010
We study for what specific values of the theoretical parameters the axion can form the totality of cold dark matter. We examine the allowed axion parameter region in the light of recent data collected by the WMAP5 mission plus baryon acoustic oscillations and supernovae \cite{komatsu}, and assume an inflationary scenario and standard cosmology. We also
Paolo Gondolo, Luca Visinelli
openaire   +3 more sources

Flexible Optical Fiber Stress/Temperature Dual‐Mode Sensing Based on CaZnOS:Nd,Er

open access: yesAdvanced Functional Materials, EarlyView.
Temperature and stress sensing based on flexible optical fibers may be the key to future artificial intelligence's perception of the world, here an optical fiber sensor capable of realizing such dual mode sensing is preliminary confirmed based on CaZnOS:Nd3+,Er3+.
Pan Zheng   +12 more
wiley   +1 more source

Cosmic microwave background constraints on coupled dark matter

open access: yesPhysics Letters B, 2015
We study CMB constraints on a scenario where a fraction of dark matter is non-minimally coupled to a massless scalar field and dark energy is in the form of a cosmological constant.
Sophie C.F. Morris, Anne M. Green
doaj   +1 more source

Axion Cold Dark Matter

open access: yes, 2016
Axion Dark Matter, Stockholm, Sweden, 9 Dec 2016 - 9 Dec 2016 ; (2016).
openaire   +3 more sources

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