Results 41 to 50 of about 144,169 (298)
Unifying dark matter and dark energy with non-canonical scalars
European Physical Journal C: Particles and Fields, 2021 Non-canonical scalar fields with the Lagrangian $${{\mathcal {L}}} = X^\alpha - V(\phi )$$ L = X α - V ( ϕ ) , possess the attractive property that the speed of sound, $$c_s^{2} = (2\,\alpha - 1)^{-1}$$ c s 2 = ( 2 α - 1 ) - 1 , can be exceedingly small ...
Swagat S. Mishra, Varun Sahni
doaj +1 more source
Cutoff in the Lyman-α forest power spectrum: Warm IGM or warm dark matter?
Physics Letters B, 2017 We re-analyse high redshift and high resolution Lyman-α forest spectra considered in [1], seeking to constrain the properties of warm dark matter particles.
Antonella Garzilli +2 more
doaj +1 more source
Analytical warm dark matter power spectrum on small scales [PDF]
Journal of Cosmology and Astroparticle Physics, 2021 Using the Reduced Relativistic Gas (RRG) model, we analytically determine the matter power spectrum for Warm Dark Matter (WDM) on small scales, k > 1 h/Mpc.
G. Pordeus-da-Silva +2 more
semanticscholar +1 more source
Dark Matters on the Scale of Galaxies
Universe, 2020 The cold dark-matter model successfully explains both the emergence and evolution of cosmic structures on large scales and, when we include a cosmological constant, the properties of the homogeneous and isotropic Universe.
Ivan de Martino +5 more
doaj +1 more source
DETERMINATION OF DARK MATTER TYPE BY X-RAY SOURCES STATISTICS
Odessa Astronomical Publications, 2014 The current cosmological model includes cold dark matter, which consists of massive nonrelativistic particles. There are also some observational and theoretical evidences for warm dark matter.
A.V. Tugay
doaj +1 more source
XENON1T anomaly and its implication for decaying warm dark matter
Physics Letters B, 2020 An excess in the electronic recoil data was observed in the XENON1T detector. One of plausible explanations for the excess is absorption of a vector bosonic particle with the mass of 2−3keV.
Gongjun Choi +2 more
doaj +1 more source
Bounds on warm dark matter from Schwarzschild primordial black holes [PDF]
The European Physical Journal Plus, 2020 We consider light dark matter candidates originated from the evaporation of Schwarzschild primordial black holes, with masses in the range 10-5\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage ...
J. Auffinger, I. Masina, Giorgio Orlando
semanticscholar +1 more source
Warm and fuzzy dark matter: Free streaming of wave dark matter [PDF]
Physical Review DWave or fuzzy dark matter that is produced with relativistic wave numbers exhibits free-streaming effects analogous to warm or hot particle dark matter with relativistic momenta.
Rayne Liu, Wayne Hu, Huangyu Xiao
semanticscholar +1 more source
Gravitational waves and dark photon dark matter from axion rotations
Journal of High Energy Physics, 2021 An axion rotating in field space can produce dark photons in the early universe via tachyonic instability. This explosive particle production creates a background of stochastic gravitational waves that may be visible at pulsar timing arrays or other ...
Raymond T. Co +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.Platinum‐Copper bimetallic nanoparticles may evolve depending on their synthesis under tumor microenvironment conditions and play a dual role as chemotherapeutic agents after releasing Cu ions and as near infrared photothermal agents with the Pt‐rich remaining frames.
Jose I. Garcia‐Peiro +7 more
wiley +1 more source