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Decaying dark matter (DDM) is a candidate which can solve the discrepancies between predictions of the concordance $\Lambda$CDM model and observations at small scales such as the number counts of companion galaxies of the Milky Way and the…

Cosmology and Nongalactic Astrophysics · Physics 2014-07-17 Shohei Aoyama , Toyokazu Sekiguchi , Kiyotomo Ichiki , Naoshi Sugiyama

The spatial distribution of Milky Way (MW) subhaloes provides an important set of observables for testing cosmological models. These include the radial distribution of luminous satellites, planar configurations, and the abundance of dark…

Astrophysics of Galaxies · Physics 2023-02-09 Mark R. Lovell , Marius Cautun , Carlos S. Frenk , Wojciech A. Hellwing , Oliver Newton

Making robust predictions for the phase space distribution of dark matter at the solar neighbourhood is vital for dark matter direct detection experiments. To date, almost all such predictions have been based on simulations that model the…

Astrophysics of Galaxies · Physics 2015-05-13 J. I. Read , L. Mayer , A. M. Brooks , F. Governato , G. Lake

We present a suite of baryonic cosmological zoom-in simulations of self-interacting dark matter (SIDM) haloes within the ``Feedback In Realistic Environment'' (FIRE) project. The three simulated haloes have virial masses of $\sim 10^{12}\,…

Asymmetric Dark Matter (ADM) models invoke a particle-antiparticle asymmetry, similar to the one observed in the Baryon sector, to account for the Dark Matter (DM) abundance. Both asymmetries are usually generated by the same mechanism and…

High Energy Physics - Phenomenology · Physics 2015-06-04 Mattias Blennow , Enrique Fernandez-Martinez , Olga Mena , Javier Redondo , Paolo Serra

In this third paper of the series, we investigate the effects of warm dark matter with a particle mass of $m_\mathrm{WDM}=3\,\mathrm{keV}$ on the smallest galaxies in our Universe. We present a sample of 21 hydrodynamical cosmological…

Astrophysics of Galaxies · Physics 2019-02-13 Andrea V. Macciò , Jonas Frings , Tobias Buck , Aaron A. Dutton , Marvin Blank , Aura Obreja , Keri L. Dixon

Self-interacting dark matter (SIDM) models have been proposed to solve the small-scale issues with the collisionless cold dark matter (CDM) paradigm. We derive equilibrium solutions in these SIDM models for the dark matter halo density…

Cosmology and Nongalactic Astrophysics · Physics 2014-07-16 Manoj Kaplinghat , Ryan E. Keeley , Tim Linden , Hai-Bo Yu

We perform high-resolution simulations of a MW-like galaxy in a self-interacting cold dark matter model with elastic cross section over mass of $1~\rm cm^2/g$ (SIDM) and compare to a model without self-interactions (CDM). We run our…

Astrophysics of Galaxies · Physics 2019-09-25 Victor H. Robles , Tyler Kelley , James S. Bullock , Manoj Kaplinghat

We investigate the presence and importance of dark matter discs in a sample of 24 simulated Milky Way galaxies in the APOSTLE project, part of the EAGLE programme of hydrodynamic simulations in Lambda-CDM cosmology. It has been suggested…

Astrophysics of Galaxies · Physics 2016-07-12 Matthieu Schaller , Carlos S. Frenk , Azadeh Fattahi , Julio F. Navarro , Kyle A. Oman , Till Sawala

We present results of cosmological N-body hydrodynamic chemistry simulations of primordial structure growth and evolution in a scenario with warm dark matter (WDM) having a mass of 3 keV (thermal relic) and compare with a model consisting…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-23 Umberto Maio , Matteo Viel

We compare a suite of four simulated dwarf galaxies formed in 10$^{10} M_{\odot}$ haloes of collisionless Cold Dark Matter (CDM) with galaxies simulated in the same haloes with an identical galaxy formation model but a non-zero…

We study the impact of a warm dark matter (WDM) cosmology on dwarf galaxy formation through a suite of cosmological hydrodynamical zoom-in simulations of $M_{\rm halo} \approx10^{10}\,M_{\odot}$ dark matter halos as part of the Feedback in…

We report on a new method for incorporating interactions between dark matter (DM) and baryons in cosmological simulations, capable of handling the challenging regime in which the dark matter particle mass is comparable to or lighter than…

Cosmology and Nongalactic Astrophysics · Physics 2026-04-23 Connor Hainje , Glennys R. Farrar

Warm dark matter (WDM) has been proposed as an alternative to cold dark matter (CDM), to resolve issues such as the apparent lack of satellites around the Milky Way. Even if WDM is not the answer to observational issues, it is essential to…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Lin F. Yang , Mark C. Neyrinck , Miguel A. Aragon-Calvo , Bridget Falck , Joseph Silk

We study the effect of warm dark matter (WDM) on hydrodynamic simulations of galaxy formation as part of the Making Galaxies in a Cosmological Context (MaGICC) project. We simulate three different galaxies using three WDM candidates of 1, 2…

Cosmology and Nongalactic Astrophysics · Physics 2014-03-14 Jakob Herpich , Gregory S. Stinson , Andrea V. Macciò , Chris Brook , James Wadsley , Hugh M. P. Couchman , Tom Quinn

Minimal atomic dark matter with its distinctive cooling mechanisms offers an instructive framework for understanding the potential impact of dark matter on small-scale structure formation and early cosmology. The model consists of two…

High Energy Physics - Phenomenology · Physics 2026-02-12 Jared Barron , Rouven Essig , Megan H. McDuffie , Jesús Pérez-Ríos , Gregory Suczewski

Based on observational constraints on large scale structure and halo structure, dark matter is generally taken to be cold and essentially collisionless. On the other hand, given the large number of particles and forces in the visible world,…

Cosmology and Nongalactic Astrophysics · Physics 2013-12-09 JiJi Fan , Andrey Katz , Lisa Randall , Matthew Reece

Predicting the local flux of dark matter particles is vital for dark matter direct detection experiments. To date, such predictions have been based on simulations that model the dark matter alone. Here we include the influence of the…

Astrophysics of Galaxies · Physics 2015-05-13 J. I. Read , V. Debattista , O. Agertz , L. Mayer , A. M. Brooks , F. Governato , G. Lake

A possible solution to the small scale problems of the cold dark matter (CDM) scenario is that the dark matter consists of two components, a cold and a warm one. We perform a set of high resolution simulations of the Milky Way halo varying…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Donnino Anderhalden , Juerg Diemand , Gianfranco Bertone , Andrea V. Maccio , Aurel Schneider

We perform a set of high-resolution, dissipationless N-body simulations to investigate the influence of cold dark matter (CDM) substructure on the dynamical evolution of thin galactic disks. Our method combines cosmological simulations of…

Astrophysics · Physics 2015-05-13 Stelios Kazantzidis , Andrew R. Zentner , James S. Bullock