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Astrophysical observations spanning dwarf galaxies to galaxy clusters indicate that dark matter (DM) halos are less dense in their central regions compared to expectations from collisionless DM N-body simulations. Using detailed fits to DM…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-03 Manoj Kaplinghat , Sean Tulin , Hai-Bo Yu

The next generation of axion direct detection experiments may rule out or confirm axions as the dominant source of dark matter. We develop a general likelihood-based framework for studying the time-series data at such experiments, with a…

Cosmology and Nongalactic Astrophysics · Physics 2020-11-13 Joshua W. Foster , Nicholas L. Rodd , Benjamin R. Safdi

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

High-resolution N-body simulations are used to examine the power spectrum dependence of the concentration of galaxy-sized dark matter halos. It is found that dark halo concentrations depend on the amplitude of mass fluctuations as well as…

Astrophysics · Physics 2009-07-09 V. R. Eke , J. F. Navarro , M. Steinmetz

The indirect detection of particle dark matter (DM) is based on the search for anomalous components in cosmic rays (CRs) due to the annihilation of DM pairs in the galactic halo, on the top of the standard astrophysical production. These…

High Energy Astrophysical Phenomena · Physics 2010-03-23 P. Salati , F. Donato , N. Fornengo

It has been suggested that the central stellar velocity dispersion of galaxies can trace dark matter halo mass directly. We test this hypothesis using a complete spectroscopic sample of isolated galaxies surrounded by faint satellite…

Astrophysics of Galaxies · Physics 2020-11-18 Gangil Seo , Jubee Sohn , Myung Gyoon Lee

The experimental situation of Dark Matter Direct Detection has reached an exciting cross-roads, with potential hints of a discovery of Dark Matter (DM) from the CDMS, CoGeNT, CRESST-II and DAMA experiments in tension with null-results from…

High Energy Physics - Phenomenology · Physics 2014-02-13 Jonathan H. Davis , Torsten Ensslin , Celine Boehm

We use a sample of 17 strong gravitational lens systems from the BELLS GALLERY survey to quantify the amount of low-mass dark matter haloes within the lensing galaxies and along their lines of sight, and to constrain the properties of dark…

Cosmology and Nongalactic Astrophysics · Physics 2019-02-20 E. Ritondale , S. Vegetti , G. Despali , M. W. Auger , L. V. E Koopmans , J. P. McKean

The signals expected in WIMP direct detection experiments depend on the ultra-local dark matter distribution. Observations probe the local density, circular speed and escape speed, while simulations find velocity distributions that deviate…

Cosmology and Nongalactic Astrophysics · Physics 2011-01-27 Anne M. Green

Weakly Interacting Massive Particles (WIMPs) are one of the leading candidates for Dark Matter. For understanding the nature of WIMPs and identifying them among new particles produced at colliders (hopefully in the near future),…

High Energy Physics - Phenomenology · Physics 2011-08-17 Chung-Lin Shan

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

Dark matter self-interactions may have the capability to solve or at least mitigate small-scale problems of the cosmological standard model, Lambda Cold Dark Matter. There are a variety of self-interacting dark matter models that lead to…

Cosmology and Nongalactic Astrophysics · Physics 2024-03-19 Moritz S. Fischer , Lenard Kasselmann , Marcus Brüggen , Klaus Dolag , Felix Kahlhoefer , Antonio Ragagnin , Andrew Robertson , Kai Schmidt-Hoberg

We report a series of high-resolution cosmological N-body simulations designed to explore the formation and properties of dark matter halos with masses close to the damping scale of the primordial power spectrum of density fluctuations. We…

Astrophysics · Physics 2009-11-13 P. Colin , O. Valenzuela , V. Avila-Reese

We study predictions for dark matter phase-space structure near the Sun based on high-resolution simulations of six galaxy halos taken from the Aquarius Project. The local DM density distribution is predicted to be remarkably smooth; the…

Weakly Interacting Massive Particle (WIMP) direct detection experiments are closing in on the region of parameter space where relic neutralinos may constitute the galactic halo dark matter. We discuss two issues in the interpretation of…

High Energy Physics - Phenomenology · Physics 2007-05-23 Anne M. Green

Numerous observations have shown that the dark matter halo surface density, defined as the product of core radius and halo central density of cored dark matter haloes is nearly constant and independent of galaxy mass over a whole slew of…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-10 Sujit K. Dalui , Shantanu Desai

Terrestrial dark matter detection experiments probe the velocity-space distribution of dark matter particles in the vicinity of the Earth. We present a novel method, to be used in conjunction with standard cosmological simulations of…

Astrophysics · Physics 2009-11-07 David Stiff , Lawrence M. Widrow

One possible and natural derivation from the collisionless cold dark matter (CDM) standard cosmological framework is the assumption of the existence of interactions between dark matter (DM) and photons or neutrinos. Such possible…

The next generation of dark matter (DM) direct detection experiments and neutrino telescopes will probe large swaths of dark matter parameter space. In order to interpret the signals in these experiments, it is necessary to have good models…

High Energy Astrophysical Phenomena · Physics 2009-07-30 Annika H. G. Peter

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
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