Results 31 to 40 of about 1,187,641 (234)
Axion quark nugget dark matter model: Size distribution and survival pattern [PDF]
Physical Review D, 2019 We consider the formation and evolution of Axion Quark Nugget dark matter particles in the early universe. The goal of this work is to estimate the mass distribution of these objects and assess their ability to form and survive to the present day.
S. Ge, K. Lawson, A. Zhitnitsky
semanticscholar +1 more source
Indirect Evidence for Dark Matter Density Spikes around Stellar-mass Black Holes
The Astrophysical Journal Letters, 2023 It has been suggested for a long time that dark matter would form a density spike around a black hole. However, no promising evidence has been observed so far to verify this theoretical suggestion.
Man Ho Chan, Chak Man Lee
doaj +1 more source
MC2: CONSTRAINING THE DARK MATTER DISTRIBUTION OF THE VIOLENT MERGING GALAXY CLUSTER CIZA J2242.8+5301 BY PIERCING THROUGH THE MILKY WAY [PDF]
, 2014 The galaxy cluster CIZA J2242.8+5301 at z = 0.19 is a merging system with a prominent (∼2 Mpc long) radio relic, which together with the morphology of the X-ray emission provides strong evidence for a violent collision along the north–south axis.
M. J. Jee +8 more
semanticscholar +1 more source
Dark Matter Distribution in Nearby Galaxies [PDF]
Symposium - International Astronomical Union, 2004 We present results obtained from a study of the mass distribution of 24 galaxies observed using Fabry-Pérot techniques, as part of the GHASP survey (see Russeil et al., this meeting). For each galaxy, we combined high resolution Hα rotation curves derived from 2-D velocity fields, with low resolution HI data, in order to determine accurately the inner ...
Olivia Garrido +5 more
openaire +1 more source
Estimating Dark Matter Distributions
The Astrophysical Journal, 2005 Thanks to instrumental advances, new, very large kinematic datasets for nearby dwarf spheroidal (dSph) galaxies are on the horizon. A key aim of these datasets is to help determine the distribution of dark matter in these galaxies. Past analyses have generally relied on specific dynamical models or highly restrictive dynamical assumptions.
Wang, Xiao +4 more
openaire +2 more sources
Distribution of phantom dark matter in dwarf spheroidals [PDF]
Astronomy & Astrophysics, 2020 We derive the distribution of the phantom dark matter in the eight classical dwarf galaxies surrounding the Milky Way, under the assumption that modified Newtonian dynamics (MOND) is the correct theory of gravity. According to their observed shape, we model the dwarfs as axisymmetric systems, rather than spherical systems, as usually assumed.
Hodson A. O., Diaferio A., Ostorero L.
openaire +2 more sources
Shapley supercluster survey: mapping the dark matter distribution [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We present a 23 deg2 weak gravitational lensing survey of the Shapley supercluster core and its surroundings using gri VST images as part of the Shapley Supercluster Survey (ShaSS). This study reveals the overall matter distribution over a region containing 11 clusters at z ∼ 0.048 that are all interconnected, as well as several
Yuchi Higuchi +6 more
openaire +4 more sources
Anisotropic dark matter distribution functions and impact on WIMP direct detection [PDF]
, 2013 Dark matter N-body simulations suggest that the velocity distribution of dark matter is anisotropic. In this work we employ a mass model for the Milky Way whose parameters are determined from a fit to kinematical data.
Nassim Bozorgnia, R. Catena, T. Schwetz
semanticscholar +1 more source
Impact of relativistic corrections on the detectability of dark-matter spikes with gravitational waves [PDF]
Physical Review D, 2022 Black holes located within a dark matter cloud can create overdensity regions known as dark matter spikes. The presence of spikes modifies the gravitational-wave signals from binary systems through changes in the gravitational potential or dynamical ...
Nicholas Speeney +3 more
semanticscholar +1 more source
Handling the uncertainties in the Galactic Dark Matter distribution for particle Dark Matter searches [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 Updated wrt published version, by including results for Burkert and Einasto profiles.
Benito M., Cuoco A., Iocco F.
openaire +4 more sources