English
Related papers

Related papers: The highest-speed local dark matter particles come…

200 papers

Recent proper motion measurements of the Large and Small Magellanic Clouds (LMC and SMC, respectively) by Kallivayalil et al (2006a,b) suggest that the 3D velocities of the Clouds are substantially higher (~100 km/s) than previously…

Modelling perturbations of the Milky Way (MW) halo induced by the infall of the Large Magellanic Cloud (LMC) offers new avenues to constrain the dark matter (DM) distribution in our Galaxy. A key observable is the reflex motion of the MW…

Astrophysics of Galaxies · Physics 2025-08-08 Rashid Yaaqib , Michael Petersen , Jorge Peñarrubia

High resolution N-body simulations of galactic cold dark matter haloes indicate that we should expect to find a few satellite galaxies around the Milky Way whose haloes have a maximum circular velocity in excess of 40 kms. Yet, with the…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-19 Mark Lovell , Vincent Eke , Carlos Frenk , Liang Gao , Adrian Jenkins , Tom Theuns , Jie Wang , Simon White , Alexey Boyarsky , Oleg Ruchayskiy

Previous studies showed that an estimate of the likelihood distribution of the Milky Way halo mass can be derived using the properties of the satellites similar to the Large and Small Magellanic Clouds (LMC and SMC). However, it would be…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Roberto E. Gonzalez , Andrey V. Kravtsov , Nickolay Y. Gnedin

As the hunt for dark matter progresses, recently there have been advances in the search for heavy dark matter with a mass well above a TeV. We show the importance of properly modeling the local dark matter velocity distribution, beyond the…

High Energy Physics - Phenomenology · Physics 2026-02-27 Nassim Bozorgnia , Joseph Bramante , Andrew Buchanan

We examine Milky Way-Magellanic Cloud systems selected from the Millennium-II Simulation in order to place the orbits of the Magellanic Clouds in a cosmological context. Our analysis shows that satellites massive enough to be LMC analogs…

Astrophysics of Galaxies · Physics 2011-06-09 Michael Boylan-Kolchin , Gurtina Besla , Lars Hernquist

In HST Cycles 11 and 13 we obtained two epochs of ACS/HRC data for fields in the Magellanic Clouds centered on background quasars. We used these data to determine the proper motions of the LMC and SMC to better than 5% and 15% respectively.…

The Large and Small Magellanic Clouds (LMC and SMC, respectively) are the largest satellite galaxies of the Milky Way (MW) and their interactions with each other have given rise to multiple stellar substructures in their periphery as well…

Astrophysics of Galaxies · Physics 2026-02-06 Bethany Garver , David Nidever , Victor Debattista , Nathan Deg

Our goal is to study the gravitational effects caused by the passage of the Large Magellanic Cloud (LMC) in its orbit on the stellar halo of the Milky Way (MW). We employed the Gaia Data Release 3 to construct a halo tracers data set…

Astrophysics of Galaxies · Physics 2024-08-21 K. J. Fushimi , M. E. Mosquera , M. Dominguez

We model the response of spherical, non-rotating Milky Way (MW) dark matter and stellar halos to the Large Magellanic Cloud (LMC) using the matrix method of linear response theory. Our computations reproduce the main features of the dark…

Astrophysics of Galaxies · Physics 2022-07-20 Simon Rozier , Benoit Famaey , Arnaud Siebert , Giacomo Monari , Christophe Pichon , Rodrigo Ibata

We compare the properties of gas flows on both the near and far side of the Large Magellanic Cloud (LMC) disk using Hubble Space Telescope UV absorption-line observations toward an AGN behind (transverse) and a star within (down-the-barrel)…

Astrophysics of Galaxies · Physics 2016-01-27 Kat Barger , Nicolas Lehner , J. Chris Howk

The recent pericentric passage of the Large Magellanic Cloud (LMC) has dislodged the Milky Way's (MW) centre of mass, inducing dynamical disequilibrium, the reflex motion, in the kinematics of outer stellar halo stars. Using data out to…

Recent discoveries have shown that a population of hypervelocity stars (HVSs) originate from the Large Magellanic Cloud (LMC). We use three such HVSs as dynamical tracers to constrain the past orbit of the LMC. Since each star was ejected…

Astrophysics of Galaxies · Physics 2026-04-07 Scott Lucchini , Jiwon Jesse Han

We review the recent theoretical and observational developments concerning the interaction of the Large Magellanic Cloud (LMC) with the Milky Way and its neighbourhood. An emerging picture is that the LMC is a fairly massive companion…

Astrophysics of Galaxies · Physics 2023-04-19 Eugene Vasiliev

The rotation of the disk of the Large Magellanic Cloud (LMC) is derived from the radial velocities of 422 carbon stars. New aspects of this analysis include the propagation of uncertainties in the LMC proper motion with a Monte Carlo, and a…

Astrophysics · Physics 2014-10-13 David R. Alves , Cailin A. Nelson

The velocity distribution of the dark matter particles on the outskirts of the Solar System remains unclear. We suggest to determine it using experimentally found properties of the oldest halo objects. Indeed, the oldest halo stars and…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Anton N. Baushev

To explore the origin of high-velocity gas in the direction of the Large Magellanic Cloud (LMC) we analyze absorption lines in the ultraviolet spectrum of a Galactic halo star that is located in front of the LMC at d=9.2 kpc distance. We…

Astrophysics of Galaxies · Physics 2015-11-18 P. Richter , K. S. de Boer , K. Werner , T. Rauch

The Large Magellanic Cloud (LMC) is the most luminous satellite galaxy of the Milky Way and owing to its companion, the Small Magellanic Cloud (SMC), represents an excellent laboratory to study the interaction of dwarf galaxies. The aim of…

The ongoing interaction between the Milky Way (MW) and its largest satellite - the Large Magellanic Cloud (LMC) - creates a significant perturbation in the distribution and kinematics of distant halo stars, globular clusters and satellite…

Astrophysics of Galaxies · Physics 2022-02-25 Lilia Correa Magnus , Eugene Vasiliev

We use the APOSTLE $\Lambda$CDM cosmological hydrodynamical simulations of the Local Group to study the recent accretion of massive satellites into the halo of Milky Way (MW)-sized galaxies. These systems are selected to be close analogues…

Astrophysics of Galaxies · Physics 2021-04-21 Isabel M. E. Santos-Santos , Azadeh Fattahi , Laura V. Sales , Julio F. Navarro