Results 31 to 40 of about 801,925 (377)
Missing Satellites Problem: Completeness Corrections to the Number of Satellite Galaxies in the Milky Way are Consistent with Cold Dark Matter Predictions. [PDF]
Physical Review Letters, 2017 A critical challenge to the cold dark matter (CDM) paradigm is that there are fewer satellites observed around the Milky Way than found in simulations of dark matter substructure.
Stacy Y. Kim, A. Peter, J. Hargis
semanticscholar +1 more source
Cusp-to-core transition in low-mass dwarf galaxies induced by dynamical heating of cold dark matter by primordial black holes [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We performed a series of high-resolution N-body simulations to examine whether dark matter candidates in the form of primordial black holes (PBHs) can solve the cusp–core problem in low-mass dwarf galaxies.
P. Boldrini +5 more
semanticscholar +1 more source
Substructures in cold dark matter haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 We analyse the properties of substructures within dark matter halos (subhalos) using a set of high-resolution numerical simulations of the formation of structure in a Lambda-CDM Universe. Our simulation set includes 11 high-resolution simulations of massive clusters as well as a region of mean density, allowing us to study the spatial and mass ...
De Lucia G. +7 more
openaire +6 more sources
Warm Little Inflaton Becomes Cold Dark Matter. [PDF]
Physical Review Letters, 2018 We present a model where the inflaton can naturally account for all the dark matter in the Universe within the warm inflation paradigm. In particular, we show that the symmetries and particle content of the warm little inflaton scenario (i) avoid large ...
J. G. Rosa, L. B. Ventura
semanticscholar +1 more source
Axions as hot and cold dark matter [PDF]
Journal of Cosmology and Astroparticle Physics, 2014 The presence of a hot dark matter component has been hinted at 3 sigma by a combination of the results from different cosmological observations. We examine a possibility that pseudo Nambu-Goldstone bosons account for both hot and cold dark matter components.
Fuminobu Takahashi +3 more
openaire +6 more sources
Resolving XENON excess with decaying cold dark matter
European Physical Journal C: Particles and Fields, 2021 We propose a decaying cold dark matter model to explain the excess of electron recoil observed at the XENON1T experiment. In this scenario, the daughter dark matter from the parent dark matter decay easily obtains velocity large enough to saturate the ...
Shuai Xu, Sibo Zheng
doaj +1 more source
Axino cold dark matter revisited [PDF]
Journal of High Energy Physics, 2012 Abstract Axino arises in supersymmetric versions of axion models and is a natural candidate for cold or warm dark matter. Here we revisit axino dark matter produced thermally and non-thermally in light of recent developments. First we discuss the definition of axino relative to low energy axion one for several KSVZ and DFSZ models ...
Ki-Young Choi +6 more
openaire +5 more sources
Connecting CMB anisotropy and cold dark matter phenomenology via reheating [PDF]
Physical Review D, 2018 Understanding the properties of dark matter has been proved to be one of the most challenging problems of particle phenomenology. In this paper, we tried to understand the phenomenology of dark matter in light of very well understood properties of Cosmic
D. Maity, Pankaj Saha
semanticscholar +1 more source
Cold dark matter and neutralinos [PDF]
Nuclear Physics B - Proceedings Supplements, 2003 4 pages, 4 figures, uses espcrc2.sty. Proc. of "Sources and detection of dark matter and dark energy in the Universe (DM2002)". The version on the archive has low-resolution figures. The paper with high-resolution figures can be found at http://www.to.infn.it/~fornengo/proceedings/marinadelrey02.ps.gz or through http://www.to.infn.it/astropart/
openaire +4 more sources
Dark Energy and Dark Matter [PDF]
, 2003 It is a puzzle why the densities of dark matter and dark energy are nearly equal today when they scale so differently during the expansion of the universe. This conundrum may be solved if there is a coupling between the two dark sectors. In this paper we
A. Riotto +30 more
core +2 more sources