Results 71 to 80 of about 689,866 (345)

Search for solar axions by the CERN axion solar telescope with 3He buffer gas: closing the hot dark matter gap. [PDF]

open access: yesPhysical Review Letters, 2013
The CERN Axion Solar Telescope has finished its search for solar axions with (3)He buffer gas, covering the search range 0.64 eV ≲ ma ≲ 1.17 eV. This closes the gap to the cosmological hot dark matter limit and actually overlaps with it. From the absence
M. Arık   +73 more
semanticscholar   +1 more source

The Sun as a sub-GeV Dark Matter Accelerator [PDF]

open access: yes, 2018
Sub-GeV halo dark matter that enters the Sun can potentially scatter off hot solar nuclei and be ejected much faster than its incoming velocity. We derive an expression for the rate and velocity distribution of these reflected particles taking into ...
Emken, Timon   +2 more
core   +3 more sources

Angular momentum distribution of hot gas and implications for disk galaxy formation

open access: yes, 2003
We study the angular momentum profiles both for dark matter and for gas within virialized halos, using a statistical sample of halos drawn from cosmological hydrodynamics simulations.
Avila-Reese V.   +8 more
core   +1 more source

Constraints on interacting dark energy models through cosmic chronometers and Gaussian process

open access: yes, 2020
Energy flows between dark energy and dark matter may alleviate the Hubble tension and mitigate the coincidence problem. In this paper, after reconstructing the redshift evolution of the Hubble function by adopting Gaussian process techniques, we estimate
Aljaf, Muhsin   +2 more
core   +1 more source

νΛMDM: A model for sterile neutrino and dark matter reconciles cosmological and neutrino oscillation data after BICEP2

open access: yesPhysics Letters B, 2014
We propose an ultraviolet complete theory for cold dark matter (CDM) and sterile neutrinos that can accommodate both cosmological data and neutrino oscillation experiments within 1σ level.
P. Ko, Yong Tang
doaj   +1 more source

Neutrino interactions in the late universe

open access: yesJournal of High Energy Physics, 2021
The cosmic neutrino background is both a dramatic prediction of the hot Big Bang and a compelling target for current and future observations. The impact of relativistic neutrinos in the early universe has been observed at high significance in a number of
Daniel Green   +2 more
doaj   +1 more source

Review of Observational Evidence for Dark Matter in the Universe and in upcoming searches for Dark Stars

open access: yes, 2008
Over the past decade, a consensus picture has emerged in which roughly a quarter of the universe consists of dark matter. The observational evidence for the existence of dark matter is reviewed: rotation curves of galaxies, weak lensing measurements, hot
Abel   +38 more
core   +1 more source

Testing Sunyaev-Zel'dovich measurements of the hot gas content of dark matter haloes using synthetic skies [PDF]

open access: yes, 2015
The thermal Sunyaev-Zel'dovich (tSZ) effect offers a means of probing the hot gas in and around massive galaxies and galaxy groups and clusters, which is thought to constitute a large fraction of the baryon content of the Universe.
A. Brun, I. McCarthy, J. Melin
semanticscholar   +1 more source

Going to extremes - a metagenomic journey into the dark matter of life.

open access: yesFEMS Microbiology Letters, 2021
The Virus-X-Viral Metagenomics for Innovation Value-project was a scientific expedition to explore and exploit uncharted territory of genetic diversity in extreme natural environments such as geothermal hot springs and deep-sea ocean ecosystems ...
A. Aevarsson   +91 more
semanticscholar   +1 more source

Dark energy and dark matter from cosmological observations

open access: yes, 2005
The present status of our knowledge about the dark matter and dark energy is reviewed. Bounds on the content of cold and hot dark matter from cosmological observations are discussed in some detail.
Alam U.   +9 more
core   +1 more source

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