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Direct detection of dark matter with directional sensitivity offers not only measurement of both recoil energy and direction of dark matter, but also a way to understand dark matter distribution in the Galaxy. Maxwell distribution is…

High Energy Physics - Phenomenology · Physics 2015-06-18 Keiko I. Nagao

A galaxy cluster as the most massive gravitationally-bound object in the Universe, is dominated by Dark Matter, which unfortunately can only be investigated through its interaction with the luminous baryons with some simplified assumptions…

Cosmology and Nongalactic Astrophysics · Physics 2024-01-17 Daniel de Andres , Weiguang Cui , Gustavo Yepes , Marco De Petris , Antonio Ferragamo , Federico De Luca , Gianmarco Aversano , Douglas Rennehan

The developments summarized with the name ``weak gravitational lensing'' have led to exciting possibilities to study the (statistical properties of the) dark matter distribution in the Universe. Concentrating on those aspects which require…

Astrophysics · Physics 2007-05-23 Peter Schneider , Jean-Paul Kneib

The lack of tangible evidence for non-gravitational interactions between dark and visible sectors drives the need for exploring new avenues of inferring dark matter properties through purely gravitational probes. In particular, addressing…

Astrophysics of Galaxies · Physics 2021-02-23 Mihael Petac

We present a comprehensive study of the distribution of matter around different populations of large-scale cosmic filaments, using the IllustrisTNG simulation at z=0. We computed the dark matter (DM), gas, and stellar radial density…

Cosmology and Nongalactic Astrophysics · Physics 2022-05-18 Daniela Galárraga-Espinosa , Mathieu Langer , Nabila Aghanim

To understand how well galaxies, gas and intracluster stars trace dark matter in and around galaxy clusters, we use the IllustrisTNG cosmological hydrodynamical simulation and compare the spatial distribution of dark matter with those of…

Astrophysics of Galaxies · Physics 2022-08-03 Jihye Shin , Jong Chul Lee , Ho Seong Hwang , Hyunmi Song , Jongwan Ko , Rory Smith , Jae-Woo Kim , Jaewon Yoo

In the framework of the $\Lambda$CDM model, galaxies evolve within dark matter (DM) haloes, where baryonic processes modify the inner structure of the DM distribution. In particular, baryon condensation and feedback can alter the inner…

Astrophysics of Galaxies · Physics 2026-04-06 Vicente Honorato , Antonio D. Montero-Dorta , M. Celeste Artale , Ankit Kumar

Line intensity mapping is emerging as a novel method that can measure the collective intensity fluctuations of atomic/molecular line emission from distant galaxies. Several observational programs with various wavelengths are ongoing and…

Astrophysics of Galaxies · Physics 2021-12-15 Kana Moriwaki , Naoki Yoshida

In this work we characterize the distribution of Dark Matter (DM) in the Milky Way (MW), and its uncertainties, adopting the well known "Rotation Curve" method. We perform a full marginalization over the uncertainties of the Galactic…

Astrophysics of Galaxies · Physics 2019-06-12 Maria Benito , Alessandro Cuoco , Fabio Iocco

The sensitivity of direct detection experiments depends on the phase-space distribution of dark matter near the Sun, which can be modeled theoretically using cosmological hydrodynamical simulations of Milky Way-like galaxies. However,…

High Energy Physics - Phenomenology · Physics 2026-04-08 Dylan Folsom , Carlos Blanco , Mariangela Lisanti , Lina Necib , Mark Vogelsberger , Lars Hernquist

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 detection of Dark Matter (DM) remains a significant challenge in particle physics. This study exploits advanced machine learning models to improve detection capabilities of liquid xenon time projection chamber experiments, utilizing…

Instrumentation and Methods for Astrophysics · Physics 2025-01-17 Daniel E. Lopez-Fogliani , Andres D. Perez , Roberto Ruiz de Austri

Strong gravitational lensing is a promising probe of the substructure of dark matter halos. Deep learning methods have the potential to accurately identify images containing substructure, and differentiate WIMP dark matter from other well…

Cosmology and Nongalactic Astrophysics · Physics 2020-04-09 Stephon Alexander , Sergei Gleyzer , Evan McDonough , Michael W. Toomey , Emanuele Usai

We explore the mass distribution of material associated with galaxies from the observation of gravitational weak lensing for the galaxy mass correlation function with the aid of $N$-body simulations of dark matter. The latter is employed to…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Shogo Masaki , Masataka Fukugita , Naoki Yoshida

We use the IllustrisTNG (TNG) cosmological simulations to provide theoretical expectations for the dark matter mass fractions (DMFs) and circular velocity profiles of galaxies. TNG predicts flat circular velocity curves for $z = 0$ Milky…

We investigate the viability of a simple dark matter (DM) model consisting of a single fermion in the context of galactic dynamics. We use a consistent approach that does not presume a particular DM density profile but instead requires that…

Astrophysics of Galaxies · Physics 2019-10-16 K. Pal , L. V. Sales , J. Wudka

I present a new method of deriving the shape of the dark matter (DM) halos of spiral galaxies. The method relies on the comparison of model predictions with high spectral and spatial resolution HI observations of the gas layer. The…

Astrophysics · Physics 2009-10-28 Rob P. Olling

We present a pipeline to estimate baryonic properties of a galaxy inside a dark matter (DM) halo in DM-only simulations using a machine trained on high-resolution hydrodynamic simulations. As an example, we use the IllustrisTNG hydrodynamic…

Astrophysics of Galaxies · Physics 2019-10-03 Yongseok Jo , Ji-hoon Kim

We present the distribution of luminous and dark matter in a set of strong lensing (early-type) galaxies. By combining two independent techniques - stellar population synthesis and gravitational lensing - we can compare the baryonic and…

Astrophysics · Physics 2009-11-13 I. Ferreras , P. Saha , L. L. R. Williams , S. Burles

We show that current microlensing and dynamical observations of the Galaxy permit to set interesting constraints on the Dark Matter local density and profile slope towards the galactic centre. Assuming state-of-the-art models for the…

Astrophysics of Galaxies · Physics 2011-11-18 Fabio Iocco , Miguel Pato , Gianfranco Bertone , Philippe Jetzer