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Related papers: Anisotropic dark matter distribution functions and…

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Dark matter (DM) capture in stars offers a rich phenomenology that makes it possible to probe a wide variety of particle DM scenarios in diverse astrophysical environments. In spite of decades of improvements to refine predictions of…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-02 José Lopes , Thomas Lacroix , Ilídio Lopes

Using cosmological N-body simulations we study the radial velocity distribution in dark matter haloes focusing on the lowest-order even moments, dispersion and kurtosis. We determine the properties of ten massive haloes in the simulation…

Astrophysics · Physics 2009-11-10 Radoslaw Wojtak , Ewa L. Lokas , Stefan Gottloeber , Gary A. Mamon

Anisotropies in the electromagnetic emission produced by dark matter annihilation or decay in the extragalactic sky are a recent tool in the quest for a particle dark matter evidence. We review the formalism to compute the two-point angular…

Cosmology and Nongalactic Astrophysics · Physics 2014-01-28 Nicolao Fornengo , Marco Regis

Weakly Interacting Massive Particle (WIMP) direct detection event rate calculations usually rely on fairly simple, essentially static, analytic halo models. This is largely since the resolution of numerical simulations is not yet large…

Astrophysics · Physics 2009-12-31 Anne M Green

New techniques for the laboratory direct detection of dark matter weakly interacting massive particles (WIMPs) are sensitive to the recoil direction of the struck nuclei. We compute and compare the directional recoil rates…

Astrophysics · Physics 2008-11-26 Moqbil S. Alenazi , Paolo Gondolo

Dark matter particles form halos that contribute the major part of the mass of galaxy clusters. The formation of these cosmological structures have been investigated both observationally and in numerical simulations, which have confirmed…

Astrophysics · Physics 2009-11-05 Ole Host

In some scenarios, the dark matter particle predominantly scatters inelastically with the target, producing a heavier neutral particle in the final state. In this class of scenarios, the reach in parameter space of direct detection…

High Energy Physics - Phenomenology · Physics 2023-04-19 Gonzalo Herrera , Alejandro Ibarra , Satoshi Shirai

We use distant Blue Horizontal Branch stars with Galactocentric distances 16 < r/kpc < 48 as kinematic tracers of the Milky Way dark halo. We model the tracer density as an oblate, power-law embedded within a spherical power-law potential.…

Astrophysics of Galaxies · Physics 2015-06-04 A. J. Deason , V. Belokurov , N. W. Evans , J. H. An

Using realistic cosmological simulations of Milky Way sized haloes, we study their dynamical state and the accuracy of inferring their mass profiles with steady-state models of dynamical tracers. We use a new method that describes the…

Astrophysics of Galaxies · Physics 2016-01-13 Jiaxin Han , Wenting Wang , Shaun Cole , Carlos S. Frenk

Various laboratory-based experiments are underway attempting to detect dark matter directly. The event rates and detailed signals expected in these experiments depend on the dark matter phase space distribution on sub-milliparsec scales.…

Astrophysics · Physics 2011-08-31 Daniele S. M. Fantin , Michael R. Merrifield , Anne M. Green

We develop a formalism to describe extensions of existing axion haloscope designs to those that possess directional sensitivity to incoming dark matter axion velocities. The effects are measurable if experiments are designed to have…

Cosmology and Nongalactic Astrophysics · Physics 2018-12-04 Stefan Knirck , Alexander J. Millar , Ciaran A. J. O'Hare , Javier Redondo , Frank D. Steffen

We explore the density profile, shape, and virial mass of the Milky Way's dark matter halo using K giants (KG) from LAMOST and SDSS/SEGUE, as well as blue horizontal branch (BHB) stars from SDSS. Incorporating Gaia DR3 proper motions, we…

Astrophysics of Galaxies · Physics 2025-05-15 Lan Zhang , Xiang-Xiang Xue , Ling Zhu , Ruizhi Zhang , Chengqun Yang , Shi Shao , Jiang Chang , Feilu Wang , Hao Tian , Gang Zhao , Chao Liu

We investigate the relationship between a dark matter halo's mass profile and measures of the velocity dispersion of kinematic tracers within its gravitational potential. By predicting the scaling relation of the halo mass with the aperture…

Astrophysics of Galaxies · Physics 2024-03-13 Andrew Sullivan , Chris Power , Connor Bottrell

An accurate knowledge of the dark matter distribution in the Milky Way is of crucial importance for galaxy formation studies and current searches for particle dark matter. In this paper we set new dynamical constraints on the Galactic dark…

Astrophysics of Galaxies · Physics 2015-12-03 Miguel Pato , Fabio Iocco , Gianfranco Bertone

We show that the mass of a dark matter halo can be inferred from the dynamical status of its satellite galaxies. Using 9 dark-matter simulations of halos like the Milky Way (MW), we find that the present-day substructures in each halo…

Astrophysics of Galaxies · Physics 2017-12-06 Zhao-Zhou Li , Y. P. Jing , Yong-Zhong Qian , Zhen Yuan , Dong-Hai Zhao

We consider dark matter velocity distributions with an anisotropic component, and analyze how the velocity structure can be probed in a solid state ionization detector with no directional detection capability using a daily modulation effect…

High Energy Physics - Phenomenology · Physics 2024-04-11 Matti Heikinheimo , Kai Nordlund , Sebastian Sassi , Kimmo Tuominen

We use high-resolution, hydrodynamic, galaxy simulations from the Latte suite of FIRE-2 simulations to investigate the inherent variation of dark matter in sub-sampled regions around the Solar Circle of a Milky Way-type analogue galaxy and…

Astrophysics of Galaxies · Physics 2022-09-28 Grace E. Lawrence , Alan R. Duffy , Chris A. Blake , Philip F. Hopkins

We use the recently completed one billion particle Via Lactea II LambdaCDM simulation to investigate local properties like density, mean velocity, velocity dispersion, anisotropy, orientation and shape of the velocity dispersion ellipsoid,…

The rotation curve of the Milky Way is commonly used to estimate the local dark matter density $\rho_{{\rm DM},\odot}$. However, the estimates are subject to the choice of the distribution of baryons needed in this type of studies. In this…

Astrophysics of Galaxies · Physics 2019-10-16 P. F. de Salas , K. Malhan , K. Freese , K. Hattori , M. Valluri

There is good evidence from N-body simulations that the velocity distribution in the outer parts of halos is radially anisotropic, with the kinetic energy in the radial direction roughly equal to the sum of that in the two tangential…

Astrophysics · Physics 2007-05-23 N. W. Evans , J. An
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