Results 31 to 40 of about 781,531 (359)
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
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
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
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
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
Detecting cold dark-matter candidates [PDF]
Physical Review D, 1986 We consider the use of superheated superconducting colloids as detectors of weakly interacting galactic halo candidate particles (e.g. photinos, massive neutrinos, and scalar neutrinos). These low temperature detectors are sensitive to the deposition of a few hundreds of eV's.
Katherine Freese +2 more
openaire +3 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
Making (dark matter) waves: Untangling wave interference for multi-streaming dark matter
The Open Journal of Astrophysics, 2022 The classical dynamics of collisionless cold dark matter, commonly described by fluid variables or a phase-space distribution, can be captured in a single semiclassical wavefunction.
Alex Gough, Cora Uhlemann
doaj +1 more source
Halo cold dark matter and microlensing [PDF]
Physical Review Letters, 1994 There is good evidence that most of the baryons in the Universe are dark and some evidence that most of the matter in the Universe is nonbaryonic with cold dark matter (cdm) being a promising possibility. We discuss expectations for the abundance of baryons and cdm in the halo of our galaxy and locally.
Michael S. Turner, Evalyn Gates
openaire +4 more sources