Results 41 to 50 of about 113,786 (346)
DARK ENERGY AND KEY PHYSICAL PARAMETERS OF CLUSTERS OF GALAXIES
Odessa Astronomical Publications, 2012 We discuss the physics of clusters of galaxies embedded in the cosmic dark energy background and show that 1) the halo cut-off radius of a cluster like the Virgo cluster is practically, if not exactly, equal to the zero-gravity radius at which the dark ...
A. D. Chernin, G. S. Bisnovatyi-Kogan
doaj +1 more source
Leptonic new force and cosmic-ray boosted dark matter for the XENON1T excess
Physics Letters B, 2020 The recently reported excess in XENON1T is explained by new leptonic forces, which are free from gauge anomalies. We focus on two scenarios with and without dark matter. In Scenario #1, the gauge boson of gauged lepton number U(1)Le−Lj, j=μ or τ provides
Yongsoo Jho +3 more
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Condensation of Galactic Cold Dark Matter
, 2016 We consider the steady-state regime describing the density profile of a dark matter halo, if dark matter is treated as a Bose-Einstein condensate. We first solve the fluid equation for "canonical" cold dark matter, obtaining a class of density profiles ...
Visinelli, Luca
core +1 more source
Statistics of substructures in dark matter haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 13 pages, 11 figures and 1 table.
G. De Lucia +4 more
openaire +4 more sources
Recoiling black holes in static and evolving dark matter halo potential [PDF]
Serbian Astronomical Journal, 2015 We follow trajectories of kicked black holes in static and evolving dark matter halo potential. We explore both NFW and Einasto dark matter density distributions.
Smole M.
doaj +1 more source
A simple analytical model for dark matter halo structure and adiabatic contraction
, 2006 A simple analytical model for describing inner parts of dark matter halo is considered. It is assumed that dark matter density is power-law. The model deals with dark matter distribution function in phase space of adiabatic invariants (radial action and ...
A. V. Gurevich +22 more
core +1 more source
Does stellar mass assembly history vary with environment? [PDF]
, 2011 Using the publicly available VESPA database of SDSS Data Release 7 spectra, we calculate the stellar Mass Weighted Age (hereafter MWA) as a function of local galaxy density and dark matter halo mass.
Hoyle, Ben, Jimenez, Raul, Verde, Licia
core +2 more sources
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
Fuzzy Dark Matter and Dark Matter Halo Cores [PDF]
The Astrophysical Journal, 2020 Abstract Whereas cold dark matter (CDM) simulations predict central dark matter cusps with densities that diverge as ρ(r) ∼ 1/r, observations often indicate constant-density cores with finite central densities ρ 0 and a flat density distribution within a core radius r 0.
openaire +3 more sources
The substructure hierarchy in dark matter haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 We present a new algorithm for identifying the substructure within simulated dark matter haloes. The method is an extension of that proposed by Tormen et al. (2004) and Giocoli et al. (2008a), which identifies a subhalo as a group of self-bound particles that prior to being accreted by the main progenitor of the host halo belonged to one and the same ...
GIOCOLI, CARLO +3 more
openaire +4 more sources