Implications of the Intriguing Constant Inner Mass Surface Density Observed in Dark Matter Halos
GalaxiesIt has long been known that the observed mass surface density of cored dark matter (DM) halos is approximately constant, independently of the galaxy mass (i.e., ρcrc≃constant, with ρc and rc being the central volume density and the radius of the core ...
Jorge Sánchez Almeida
doaj +1 more source
An excursion set model for the distribution of dark matter and dark matter haloes [PDF]
, 1998 A model of the gravitationally evolved dark matter distribution, in the Eulerian space, is developed. It is a simple extension of the excursion set model that is commonly used to estimate the mass function of collapsed dark matter haloes.
Sheth, Ravi K.
core +4 more sources
Modelling the IGM and the Lyα forest at high redshift from the dark matter distribution [PDF]
, 2002 A variety of approximate schemes for modelling the low-density intergalactic medium (IGM) in the high-redshift Universe are compared with the results of a large high-resolution hydrodynamical simulation. These schemes use either an analytical description
M. Viel +7 more
semanticscholar +1 more source
A closer look at dark matter production in exponential growth scenarios
Journal of High Energy PhysicsWe investigate a recently proposed non-thermal mechanism for dark matter production, in which a small initial dark matter (χ) number density undergoes exponential growth through scatterings with bath particles (ϕ) in the early universe (χϕ → χχ).
Disha Bhatia
doaj +1 more source
Exothermic dark matter for XENON1T excess
Journal of High Energy Physics, 2021 Motivated by the recent excess in the electron recoil from XENON1T experiment, we consider the possibility of exothermic dark matter, which is composed of two states with mass splitting.
Hyun Min Lee
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Self-Interacting Dark Matter Subhalos in the Milky Way's Tides
, 2020 We study evolution of self-interacting dark matter (SIDM) subhalos in the Milky Way (MW) tidal field. The interaction between the subhalos and the MW's tides lead to more diverse dark matter distribution in the inner region, compared to their cold dark ...
Sales, Laura V. +4 more
core +1 more source
The Extended Rotation Curve and the Dark Matter Halo of M33 [PDF]
, 1999 We present the 21-cm rotation curve of the nearby galaxy M33 out to a galactocentric distance of 16 kpc (13 disk scale-lengths). The rotation curve keeps rising out to the last measured point and implies a dark halo mass larger than 5 10^{10} solar ...
Corbelli, Edvige, Salucci, Paolo
core +3 more sources
Strong lensing in Abell 1703: constraints on the slope of the inner dark matter distribution [PDF]
, 2008 Properties of dark matter haloes can be probed observationally and numerically, and comparing both approaches provides ways to constrain cosmological models. When it comes to the inner part of galaxy cluster scale haloes, interaction between the baryonic
M. Limousin +15 more
semanticscholar +1 more source
Assessing Astrophysical Uncertainties in Direct Detection with Galaxy Simulations
, 2016 We study the local dark matter velocity distribution in simulated Milky Way-mass galaxies, generated at high resolution with both dark matter and baryons.
Brooks, Alyson M. +3 more
core +1 more source
A Dense Dark Matter Core of the Subhalo in the Strong Lensing System JVAS B1938+666
The Astrophysical Journal LettersThe nature of dark matter remains unknown, motivating the study of fuzzy/wave dark matter (FDM/ ψ DM) and self-interacting dark matter (SIDM) as alternative frameworks to address small-scale discrepancies in halo profiles inferred from observations. This
Lei Lei +9 more
doaj +1 more source