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Data from the Gaia satellite are revolutionising our understanding of the Milky Way. With every new data release, there is a need to update the census of open clusters. We aim to conduct a blind, all-sky search for open clusters using 729…

Astrophysics of Galaxies · Physics 2023-05-17 Emily L. Hunt , Sabine Reffert

We consider the problem of determining the Galaxy's gravitational potential from a star catalogue. We show that orbit-based approaches to this problem suffer from unacceptable numerical noise deriving from the use of only a finite number of…

Astrophysics of Galaxies · Physics 2015-06-15 Paul J. McMillan , James J. Binney

We use compiled high-precision pulsar timing measurements to directly measure the Galactic acceleration of binary pulsars relative to the Solar System barycenter. Given the vertical accelerations, we use the Poisson equation to derive the…

Astrophysics of Galaxies · Physics 2021-03-17 Sukanya Chakrabarti , Philip Chang , Michael T. Lam , Sarah J. Vigeland , Alice C. Quillen

The 3D mass distributions of galaxy clusters are generally triaxial, a geometry that is difficult to constrain from projected observations. In this work, we measure the projected halo shapes of clusters from their weak lensing signatures…

We determine the rotation curve (RC) of the Milky Way in the range 6 < R < 18 kpc using a sample of 903 carefully selected classical Cepheids with precise proper motions and high-quality radial velocities from \emph{Gaia} DR3. Their…

Astrophysics of Galaxies · Physics 2025-12-29 Qikang Feng , Yang Huang , Huawei Zhang , Jifeng Liu

Context. While the halo mass function is theoretically a very sensitive measure of cosmological models, masses of dark-matter halos are poorly defined, global, and unobservable quantities. Aims. We argue that local, observable quantities…

Astrophysics · Physics 2014-11-18 Christian Angrick , Matthias Bartelmann

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 simultaneously model the gravitational potential and phase space distribution function (DF) of giant stars near the Sun using the {\it Gaia} DR2 radial velocity catalog. We assume that the Galaxy is in equilibrium and is symmetric about…

Astrophysics of Galaxies · Physics 2023-02-01 Haochuan Li , Lawrence Widrow

Directionally sensitive dark matter (DM) direct detection experiments present the only way to observe the full three-dimensional velocity distribution of the Milky Way halo local to Earth. In this work we compare methods for extracting…

Cosmology and Nongalactic Astrophysics · Physics 2017-01-10 Bradley J. Kavanagh , Ciaran A. J. O'Hare

Dark Matter (DM) can become captured, deposit annihilation energy, and hence increase the heat flow in exoplanets and brown dwarfs. Detecting such a DM-induced heating in a population of exoplanets in the inner kpc of the Milky Way thus…

Instrumentation and Methods for Astrophysics · Physics 2024-05-17 María Benito , Konstantin Karchev , Rebecca K. Leane , Sven Põder , Juri Smirnov , Roberto Trotta

We present two different halo-independent methods to assess the compatibility of several direct dark matter detection data sets for a given dark matter model using a global likelihood consisting of at least one extended likelihood and an…

High Energy Physics - Phenomenology · Physics 2016-10-26 Graciela B. Gelmini , Ji-Haeng Huh , Samuel J. Witte

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

We show that Global Navigation Satellite Systems (GNSS) and gravimeters on Earth and in space can potentially offer the most accurate direct measurement of local density of near-Earth asteroid-mass Primordial Black Holes (PBHs) and Dark…

Cosmology and Nongalactic Astrophysics · Physics 2024-03-22 Michal Cuadrat-Grzybowski , Sébastien Clesse , Pascale Defraigne , Michel Van Camp , Bruno Bertrand

Nearby galaxies provide populations of stellar and non-stellar sources at a common distance and in quantifiable environments. All are observed through the Milky Way foreground, with varying degrees of contamination that depend on observed…

Astrophysics of Galaxies · Physics 2024-09-05 P. Barmby

We perform an analysis of the three-dimensional cosmic matter density field traced by galaxies of the SDSS-III/BOSS galaxy sample. The systematic-free nature of this analysis is confirmed by two elements: the successful cross-correlation…

Cosmology and Nongalactic Astrophysics · Physics 2019-09-17 Guilhem Lavaux , Jens Jasche , Florent Leclercq

We study the systematic problems in determining the local dark matter density $\rho_{dm}(R_\odot)$ from kinematics of stars in the Solar Neighbourhood, using a simulated Milky Way-like galaxy. We introduce a new unbiased method for…

Astrophysics of Galaxies · Physics 2012-02-09 Silvia Garbari , Justin I. Read , George Lake

We measured the surface mass density of the Galactic disk at the solar position, up to 4 kpc from the plane,by means of the kinematics of ~400 thick disk stars. The results match the expectations for the visible mass only, and no dark…

Astrophysics of Galaxies · Physics 2012-04-19 C. Moni Bidin , G. Carraro , R. A. Mendez , R. Smith

We develop a comprehensive study of the gamma-ray flux observed by H.E.S.S. in 5 regions of the Galactic Center (GC). Motivated by previous works on a possible Dark Matter (DM) explanation for the TeV cut-off observed in the innermost $\sim…

High Energy Astrophysical Phenomena · Physics 2023-11-22 Jaume Zuriaga-Puig , Viviana Gammaldi , Daniele Gaggero , Thomas Lacroix , Miguel Ángel Sánchez-Conde

We describe the Dark Energy Survey (DES) photometric data set assembled from the first three years of science operations to support DES Year 3 cosmology analyses, and provide usage notes aimed at the broad astrophysics community. Y3 Gold…

Cosmology and Nongalactic Astrophysics · Physics 2021-05-28 I. Sevilla-Noarbe , K. Bechtol , M. Carrasco Kind , A. Carnero Rosell , M. R. Becker , A. Drlica-Wagner , R. A. Gruendl , E. S. Rykoff , E. Sheldon , B. Yanny , A. Alarcon , S. Allam , A. Amon , A. Benoit-Lévy , G. M. Bernstein , E. Bertin , D. L. Burke , J. Carretero , A. Choi , H. T. Diehl , S. Everett , B. Flaugher , E. Gaztanaga , J. Gschwend , I. Harrison , W. G. Hartley , B. Hoyle , M. Jarvis , M. D. Johnson , R. Kessler , R. Kron , N. Kuropatkin , B. Leistedt , T. S. Li , F. Menanteau , E. Morganson , R. L. C. Ogando , A. Palmese , F. Paz-Chinchón , A. Pieres , C. Pond , M. Rodriguez-Monroy , J. Allyn-Smith , K. M. Stringer , M. A. Troxel , D. L. Tucker , J. de Vicente , W. Wester , Y. Zhang , T. M. C. Abbott , M. Aguena , J. Annis , S. Avila , S. Bhargava , S. L. Bridle , D. Brooks , D. Brout , F. J. Castander , R. Cawthon , C. Chang , C. Conselice , M. Costanzi , M. Crocce , L. N. da Costa , M. E. E. Pereira , T. M. Davis , S. Desai , J. P. Dietrich , P. Doel , K. Eckert , A. E. Evrard , I. Ferrero , P. Fosalba , J. García-Bellido , D. W. Gerdes , T. Giannantonio , D. Gruen , G. Gutierrez , S. R. Hinton , D. L. Hollowood , K. Honscheid , E. M. Huff , D. Huterer , D. J. James , T. Jeltema , K. Kuehn , O. Lahav , C. Lidman , M. Lima , H. Lin , M. A. G. Maia , J. L. Marshall , P. Martini , P. Melchior , R. Miquel , J. J. Mohr , R. Morgan , E. Neilsen , A. A. Plazas , A. K. Romer , A. Roodman , E. Sanchez , V. Scarpine , M. Schubnell , S. Serrano , M. Smith , E. Suchyta , G. Tarle , D. Thomas , C. To , T. N. Varga , R. H. Wechsler , J. Weller , R. D. Wilkinson

Strong gravitational lensing has been identified as a promising astrophysical probe to study the particle nature of dark matter. In this paper we present a detailed study of the power spectrum of the projected mass density (convergence)…

Cosmology and Nongalactic Astrophysics · Physics 2018-11-28 Ana Díaz Rivero , Cora Dvorkin , Francis-Yan Cyr-Racine , Jesús Zavala , Mark Vogelsberger
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