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Related papers: Galactic Halo Models and Particle Dark-Matter Dete…

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We study the relationship between dark-matter haloes and matter in the MIP $N$-body simulation ensemble, which allows precision measurements of this relationship, even deeply into voids. What enables this is a lack of discreteness,…

Cosmology and Nongalactic Astrophysics · Physics 2014-05-06 Mark C. Neyrinck , Miguel A. Aragon-Calvo , Donghui Jeong , Xin Wang

We address the question of whether the upcoming generation of dark matter search experiments and colliders will be able to discover if the dark matter in the Universe has two components of weakly interacting massive particles (WIMPs). We…

High Energy Physics - Phenomenology · Physics 2009-12-23 Stefano Profumo , Kris Sigurdson , Lorenzo Ubaldi

We measure the clustering of dark matter halos in a large set of collisionless cosmological simulations of the flat LCDM cosmology. Halos are identified using the spherical overdensity algorithm, which finds the mass around isolated peaks…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Jeremy L. Tinker , Brant E. Robertson , Andrey V. Kravtsov , Anatoly Klypin , Michael S. Warren , Gustavo Yepes , Stefan Gottlober

The rate of dark matter-electron scattering depends on the underlying velocity distribution of the dark matter halo. Importantly, dark matter-electron scattering is particularly sensitive to the high-velocity tail, which differs…

High Energy Physics - Phenomenology · Physics 2021-02-17 Aria Radick , Anna-Maria Taki , Tien-Tien Yu

We present a new determination of the local dark matter phase-space density. This result is obtained implementing, in the limit of isotropic velocity distribution and spherical symmetry, Eddington's inversion formula, which links univocally…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Riccardo Catena , Piero Ullio

We investigate the effects of weakly-interacting massive particle (WIMP) dark matter annihilation on the formation of Population III.1 stars, which are theorized to form from the collapse of gas cores at the centers of dark matter…

Astrophysics · Physics 2011-02-11 Aravind Natarajan , Jonathan C. Tan , Brian W. O'Shea

The count rate at dark-matter direct-detection experiments should modulate annually due to the motion of the Earth around the Sun. We show that higher-frequency modulations, including daily modulation, are also present and in some cases are…

High Energy Physics - Phenomenology · Physics 2015-06-16 Samuel K. Lee , Mariangela Lisanti , Benjamin R. Safdi

Dark matter may be detected in X-ray decay, including from the decay of the dark matter particles that make up the Milky Way (MW) halo. We use a range of density profiles to compute X-ray line intensity profiles, with a focus on the…

Cosmology and Nongalactic Astrophysics · Physics 2024-01-12 Mark R. Lovell

The local velocity distribution of dark matter plays an integral role in interpreting the results from direct detection experiments. We previously showed that metal-poor halo stars serve as excellent tracers of the virialized dark matter…

Astrophysics of Galaxies · Physics 2019-01-09 Jonah Herzog-Arbeitman , Mariangela Lisanti , Lina Necib

We perform a high-resolution cosmological zoom-in simulation of a Milky Way (MW)--like system, which includes a realistic Large Magellanic Cloud analog, using a large differential elastic dark matter self-interaction cross section that…

Astrophysics of Galaxies · Physics 2023-06-06 Daneng Yang , Ethan O. Nadler , Hai-Bo Yu

We review the halo-independent formalism, that allows to compare data from different direct dark matter detection experiments without making assumptions on the properties of the dark matter halo. We apply this method to spin-independent…

High Energy Physics - Phenomenology · Physics 2014-04-17 Eugenio Del Nobile

We extract at redshift z=0 a Milky Way sized object including gas, stars and dark matter (DM) from a recent, high-resolution cosmological N-body simulation with baryons. Its resolution is sufficient to witness the formation of a rotating…

Astrophysics of Galaxies · Physics 2014-11-20 F. -S. Ling , E. Nezri , E. Athanassoula , R. Teyssier

Direct dark matter searches are promising techniques to identify the nature of dark matter particles. I describe the future of this field of research, focussing on the question of what can be achieved in the next decade. I will present the…

Instrumentation and Methods for Astrophysics · Physics 2012-12-04 Laura Baudis

We use high-quality optical rotation curves of 9 low-luminosity disk galaxies to obtain the velocity profile of the surrounding dark matter halos. We find that they increase linearly with radius at least out to the stellar disk edge,…

Astrophysics · Physics 2009-10-31 A. Borriello , P. Salucci

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

Despite the Milky Way's proximity to us, our knowledge of its dark matter halo is fairly limited, and there is still considerable uncertainty in its halo mass. Many past techniques have been limited by assumptions such as the Galaxy being…

Astrophysics of Galaxies · Physics 2024-04-09 Elaheh Hayati , Peter Behroozi , Ekta Patel

The recent WMAP data have confirmed that exotic dark matter together with the vacuum energy (cosmological constant) dominate in the flat Universe. Modern particle theories naturally provide viable cold dark matter candidates with masses in…

Cosmology and Nongalactic Astrophysics · Physics 2009-12-17 J. D. Vergados , Ch. C. Moustakidis

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 consider the direct detection of WIMPs reaching the Earth from outside the Milky Way. If these WIMPs form a distinct population they will, although of much lower flux than typical galactic halo WIMPs, have a number of features which…

Astrophysics · Physics 2009-11-06 Katherine Freese , Paolo Gondolo , Leo Stodolsky

Celestial capture of dark matter provides a useful handle for constraining its particulate properties. The capture formalism is sensitive to the phase space distribution of dark matter in the vicinity of the celestial object. This article…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-21 Debajit Bose , Sambo Sarkar