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Related papers: Limits on the local density of dark matter

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We revisit systematics in determining the local dark matter density (rho_dm) from the vertical motion of stars in the Solar Neighbourhood. Using a simulation of a Milky Way-like galaxy, we determine the data-quality required to detect the…

Astrophysics of Galaxies · Physics 2011-08-29 Silvia Garbari , Justin I. Read , George Lake

We examine systematic problems in determining the local matter density from the vertical motion of stars, i.e. the 'Oort limit'. Using collisionless simulations and a Monte Carlo Markov Chain technique, we determine the data quality…

Astrophysics of Galaxies · Physics 2011-06-08 Silvia Garbari , George Lake , Justin I. Read

We apply a new method to determine the local disc matter and dark halo matter density to kinematic and position data for \sim2000 K dwarf stars taken from the literature. Our method assumes only that the disc is locally in dynamical…

Astrophysics of Galaxies · Physics 2012-08-28 Silvia Garbari , Chao Liu , Justin I. Read , George Lake

We present a novel study on the problem of constructing mass models for the Milky Way, concentrating on features regarding the dark matter halo component. We have considered a variegated sample of dynamical observables for the Galaxy,…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Riccardo Catena , Piero Ullio

We apply the vertical Jeans equation to the kinematics of Milky Way stars in the solar neighbourhood to measure the local dark matter density. More than 90,000 G- and K-type dwarf stars are selected from the cross-matched sample of LAMOST…

Astrophysics of Galaxies · Physics 2020-06-10 Rui Guo , Chao Liu , Shude Mao , Xiang-Xiang Xue , R. J. Long , Lan Zhang

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

A precise determination of the local dark matter density and an accurate control over the corresponding uncertainties are of paramount importance for Dark Matter (DM) searches. Using very recent high-resolution numerical simulations of a…

High Energy Astrophysical Phenomena · Physics 2014-11-21 Miguel Pato , Oscar Agertz , Gianfranco Bertone , Ben Moore , Romain Teyssier

We present the recent robust determination of the value of the Dark Matter density at the Sun's location ($\rho_\odot$) with a technique that does not rely on a global mass-modeling of the Galaxy. The method is based on the local equation…

Cosmology and Nongalactic Astrophysics · Physics 2012-12-18 Fabrizio Nesti , Paolo Salucci

We present a new method for determining the local dark matter density using kinematic data for a population of tracer stars. The Jeans equation in the $z$-direction is integrated to yield an equation that gives the velocity dispersion as a…

Astrophysics of Galaxies · Physics 2016-05-10 Hamish Silverwood , Sofia Sivertsson , Pascal Steger , Justin I. Read , Gianfranco Bertone

The local density of dark matter is an important quantity. On the one hand, its value is needed for dark matter direct detection searches. On the other hand, a precise and robust determination of the local dark matter density would help us…

Astrophysics of Galaxies · Physics 2020-05-20 Pablo F. de Salas

We use FIRE-2 zoom simulations of Milky Way size disk galaxies to derive easy-to-use relationships between the observed circular speed of the Galaxy at the Solar location, $v_\mathrm{c}$, and dark matter properties of relevance for direct…

Astrophysics of Galaxies · Physics 2024-08-15 Patrick G. Staudt , James S. Bullock , Michael Boylan-Kolchin , David Kirkby , Andrew Wetzel , Xiaowei Ou

We derive the value of the dark matter density at the Sun's location (rho_0) without globally mass-modeling the Galaxy. The proposed method relies on the local equation of centrifugal equilibrium and is independent of i) the shape of the…

Astrophysics of Galaxies · Physics 2015-05-18 P. Salucci , F. Nesti , G. Gentile , C. Frigerio Martins

The rotation curve of the Milky Way is commonly used to estimate the local dark matter density $\rho_{{\rm DM},\odot}$. However, the estimates are subject to the choice of the distribution of baryons needed in this type of studies. In this…

Astrophysics of Galaxies · Physics 2019-10-16 P. F. de Salas , K. Malhan , K. Freese , K. Hattori , M. Valluri

Measuring the density profile of dark matter in the Solar neighborhood has important implications for both dark matter theory and experiment. In this work, we apply autoregressive flows to stars from a realistic simulation of a Milky…

Astrophysics of Galaxies · Physics 2023-03-29 Matthew R Buckley , Sung Hak Lim , Eric Putney , David Shih

Measurement of the local dark matter density plays an important role in both Galactic dynamics and dark matter direct detection experiments. However, the estimated values from previous works are far from agreeing with each other. In this…

Astrophysics of Galaxies · Physics 2016-03-23 Qiran Xia , Chao Liu , Shude Mao , Yingyi Song , Lan Zhang , R. J. Long , Yong Zhang , Yonghui Hou , Yuefei Wang , Yue Wu

Despite strong evidence for the existence of large amounts of dark matter (DM) in our Universe, there is no direct indication of its presence in our own solar system. All estimates of the local DM density rely on extrapolating results on…

High Energy Physics - Phenomenology · Physics 2021-12-23 Bradley J. Kavanagh , Timon Emken , Riccardo Catena

We probe the gravitational force perpendicular to the Galactic plane at the position of the Sun based on a sample of red giants, with measurements taken from the DR3 Gaia catalogue. Measurements far out of the Galactic plane up to 3.5 kpc…

Astrophysics of Galaxies · Physics 2024-07-02 O. Bienaymé , A. C. Robin , J. -B. Salomon , C. Reylé

The peculiar velocity reconstruction methods allow one to have a deeper insight into the distribution of dark matter: both to measure mean matter density and to obtain the primordial density fluctuations. We present here the…

Astrophysics · Physics 2015-05-13 G. Lavaux , R. Mohayaee , S. Colombi , R. B. Tully

Our current understanding of how dark matter (DM) is distributed within the Milky Way halo, particularly in the solar neighborhood, is based on either careful studies of the local stellar orbits, model assumptions on the global shape of the…

The density of dark matter near the Sun is important for experiments hunting for dark matter particles in the laboratory, and for constraining the local shape of the Milky Way's dark matter halo. Estimates to date have typically assumed…

Astrophysics of Galaxies · Physics 2022-02-16 S. Sivertsson , J. I. Read , H. Silverwood , P. F. de Salas , K. Malhan , A. Widmark , C. F. P. Laporte , S. Garbari , K. Freese
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