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The role of baryonic physics, star formation, and stellar feedback, in shaping the galaxies and their host halos is an evolving topic. The dark matter aspects are illustrated in this work by showing distribution features in a…

Cosmology and Nongalactic Astrophysics · Physics 2023-05-10 A. Núñez-Castiñeyra , E. Nezri , P. Mollitor , J. Devriendt , R. Teyssier

Unveiling the 3D shape of the Milky Way's dark-matter halo is critical to understanding its formation history. We created an innovative dynamical model with minimal assumptions on the internal dynamical structures and accommodates a highly…

Astrophysics of Galaxies · Physics 2026-02-26 Ling Zhu , Runsheng Cai , Xi Kang , Xiang-Xiang Xue , Chengqun Yang , Lan Zhang , Shude Mao , Chao Liu

The density profiles of dark matter haloes can potentially probe dynamics, fundamental physics, and cosmology, but some of the most promising signals reside near or beyond the virial radius. While these scales have recently become…

Cosmology and Nongalactic Astrophysics · Physics 2022-04-29 Benedikt Diemer

Sub-GeV mass dark matter particles whose collisions with nuclei would not deposit sufficient energy to be detected, could instead be revealed through their interaction with electrons. Analyses of data from direct detection experiments…

High Energy Physics - Phenomenology · Physics 2022-03-24 Muping Chen , Graciela B. Gelmini , Volodymyr Takhistov

Stellar streams are sensitive tracers of low-mass dark matter subhalos and provide a means to test the Cold Dark Matter (CDM) paradigm on small scales. In this work, we connect the intrinsic velocity dispersion of the GD-1 stream to the…

Astrophysics of Galaxies · Physics 2025-10-03 Jacob Nibauer , Ana Bonaca , Adrian M. Price-Whelan , David N. Spergel , Jenny E. Greene

We demonstrate precisely what particle physics information can be extracted from a single direct detection observation of dark matter while making absolutely no assumptions about the local velocity distribution and local density of dark…

High Energy Physics - Phenomenology · Physics 2011-02-18 Patrick J. Fox , Graham D. Kribs , Tim M. P. Tait

The fact that dark matter (DM), thus far, has revealed itself only on scales of galaxies and larger, again thrusts onto astrophysics the opportunity and the responsibility to confront the age old mystery "What is the nature of matter?" By…

This report summarises progress made in estimating the local density of dark matter ($\rho_{\mathrm{DM,\odot}}$), a quantity that is especially important for dark matter direct detection experiments. We outline and compare the most common…

Astrophysics of Galaxies · Physics 2021-10-27 Pablo F. de Salas , Axel Widmark

Gamma-ray observations have long been used to constrain the properties of dark matter (DM), with a strong focus on weakly interacting massive particles annihilating through velocity-independent processes. However, in the absence of…

High Energy Astrophysical Phenomena · Physics 2022-10-11 Thomas Lacroix , Gaétan Facchinetti , Judit Pérez-Romero , Martin Stref , Julien Lavalle , David Maurin , Miguel A. Sánchez-Conde

WIMP direct detection experiments are just reaching the sensitivity required to detect galactic dark matter in the form of neutralinos. Data from these experiments are usually analysed under the simplifying assumption that the Milky Way…

Astrophysics · Physics 2008-11-26 Anne M Green

If the dark matter in the Universe is made of weakly self-interacting particles, they may self-annihilate and emit gamma-rays. We use high resolution numerical simulations to estimate directly the annihilation flux from the central regions…

Astrophysics · Physics 2009-09-25 Felix Stoehr , Simon D. M. White , Volker Springel , Giuseppe Tormen , Naoki Yoshida

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

The velocity distribution function (VDF) of the hypothetical Weakly Interacting Massive Particles (WIMPs), currently the most favored candidate for the Dark Matter (DM) in the Galaxy, is determined directly from the circular speed…

Astrophysics of Galaxies · Physics 2013-05-01 Pijushpani Bhattacharjee , Soumini Chaudhury , Susmita Kundu , Subhabrata Majumdar

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

Details about the velocity distribution of weakly interacting massive particle (WIMP) dark matter in our galaxy may be revealed by nuclear-recoil detectors with directional sensitivity. Previous studies have assumed that the velocity…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 Samuel K. Lee

We develop a simple analytic model for the gravitational clustering of dark matter haloes to understand how their spatial distribution is biased relative to that of the mass. The statistical distribution of dark haloes within the initial…

Astrophysics · Physics 2015-06-24 H. J. Mo , S. D. M. White

Scaling relations among dark matter (DM) and stellar quantities are a valuable tool to constrain formation scenarios and the evolution of galactic structures. However, most of the DM properties are actually not directly measured, but…

Cosmology and Nongalactic Astrophysics · Physics 2014-02-04 V. F. Cardone , A. Del Popolo , C. Tortora , N. R. Napolitano

We study three cosmological hydrodynamical simulations of Milky Way(MW)-sized halos including a comparison with the dark matter(DM)-only counterparts. We find one of our simulated galaxies with interesting MW-like features. Thanks to a…

Astrophysics of Galaxies · Physics 2015-06-19 Pol Mollitor , Emmanuel Nezri , Romain Teyssier

We explore the possibility of discovering the mirror baryons and electrons of the Mirror Twin Higgs model in direct detection experiments, in a scenario in which these particles constitute a subcomponent of the observed DM. We consider a…

High Energy Physics - Phenomenology · Physics 2021-12-22 Zackaria Chacko , David Curtin , Michael Geller , Yuhsin Tsai

We present two different halo-independent methods to assess the compatibility of several direct dark matter detection data sets for a given dark matter model using a global likelihood consisting of at least one extended likelihood and an…

High Energy Physics - Phenomenology · Physics 2016-10-26 Graciela B. Gelmini , Ji-Haeng Huh , Samuel J. Witte