Results 21 to 30 of about 556,485 (362)

Captures of Hot and Warm Sterile Antineutrino Dark Matter on EC-decaying Ho-163 Nuclei [PDF]

open access: green, 2011
Capturing low-energy electron antineutrinos on radioactive Ho-163 nuclei, which decay into Dy-163 via electron capture (EC), is a noteworthy opportunity to detect relic sterile antineutrinos.
Li, Y. F., Xing, Zhi-zhong
core   +2 more sources

Dark Matter Halo Merger Histories Beyond Cold Dark Matter: I - Methods and Application to Warm Dark Matter [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2012
We describe a methodology to accurately compute halo mass functions, progenitor mass functions, merger rates and merger trees in non-cold dark matter universes using a self-consistent treatment of the generalized extended Press-Schechter formalism.
Benson, Andrew J.   +8 more
core   +3 more sources

Warm Dark Matter versus Bumpy Power Spectra [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2002
In this paper we are exploring the differences between a Warm Dark Matter model and a CDM model where the power on a certain scale is reduced by introducing a narrow negative feature ("dip").
Alexander Knebe   +20 more
core   +3 more sources

Warm dark matter chills out: constraints on the halo mass function and the free-streaming length of dark matter with eight quadruple-image strong gravitational lenses [PDF]

open access: greenMonthly notices of the Royal Astronomical Society, 2019
The free-streaming length of dark matter depends on fundamental dark matter physics, and determines the abundance and concentration of dark matter haloes on sub-galactic scales.
Daniel Gilman   +5 more
openalex   +3 more sources

Indistinguishability of Warm Dark Matter, Modified Gravity, and Coupled Cold Dark Matter [PDF]

open access: yesPhysical Review D, 2013
The current accelerated expansion of our universe could be due to an unknown energy component with negative pressure (dark energy) or a modification to general relativity (modified gravity).
Chen, Zu-Cheng   +3 more
core   +2 more sources

Warm Dark Matter Sterile Neutrinos in Electron Capture and Beta Decay Spectra [PDF]

open access: goldAdvances in High Energy Physics, 2016
We briefly review the motivation to search for sterile neutrinos in the keV mass scale, as dark matter candidates, and the prospects to find them in beta decay or electron capture spectra, with a global perspective.
O. Moreno   +2 more
doaj   +2 more sources

Free streaming in warm wave dark matter [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics
We provide a framework for numerically computing the effects of free-streaming in scalar fields produced after inflation. First, we provide a detailed prescription for setting up initial conditions in the field. This prescription allows us to specify the
Siyang Ling, Mustafa A. Amin
semanticscholar   +4 more sources

REIONIZATION IN THE WARM DARK MATTER MODEL [PDF]

open access: bronzeThe Astrophysical Journal, 2012
Compared with the cold dark matter (CDM) model, in the warm dark matter (WDM) model formation of small scale structure is suppressed. It is often thought that this would delay the reionization of the intergalactic medium (IGM), as the star formation rate during the epoch of reionization (EOR) would be lowered. However, during the later stage of the EOR,
Bin Yue, Xuelei Chen
openalex   +3 more sources

Early galaxy formation in warm dark matter cosmologies [PDF]

open access: yesThe Astrophysical Journal, 2015
We present a framework for high-redshift ($z \geq 7$) galaxy formation that traces their dark matter (DM) and baryonic assembly in four cosmologies: Cold Dark Matter (CDM) and Warm Dark Matter (WDM) with particle masses of $m_x =$ 1.5, 3 and 5 ${\rm keV}$
Dayal, Pratika   +2 more
core   +3 more sources

Linear Cosmological Structure Limits on Warm Dark Matter [PDF]

open access: yesPhysical Review D, 2005
I consider constraints from observations on a cutoff scale in clustering due to free streaming of the dark matter in a warm dark matter cosmological model with a cosmological constant.
G. Kauffmann   +3 more
core   +2 more sources

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