Results 81 to 90 of about 8,080,766 (192)

The shape of dark matter haloes in the Aquarius simulations: Evolution and memory

EPJ Web of Conferences, 2012
We use the high resolution cosmological N-body simulations from the Aquarius project to investigate in detail the mechanisms that determine the shape of Milky Way-type dark matter haloes.
Sales L.V., Helmi A., Vera-Ciro C.A.
doaj   +1 more source

The Clustering of Dark Matter, Haloes & Galaxies [PDF]

, 2008
In this thesis I study the spatial distribution of galaxies, haloes and dark matter particlesin the Universe. The subjects investigated are conceptually divided into three areas.One line of research, which is made up of Chapters 2 and 3， is to explore ...
Raúl Esteban Angulo de la Puente,
core  

GD-1 Stellar Stream and Cocoon in the DESI Early Data Release

The Astrophysical Journal
We present  ∼115 new spectroscopically identified members of the GD-1 tidal stream observed with the 5000-fiber Dark Energy Spectroscopic Instrument (DESI).
M. Valluri, P. Fagrelius, S. E. Koposov, T. S. Li, Oleg Y. Gnedin, E. F. Bell, R. G. Carlberg, A. P. Cooper, J. Aguilar, S. Ahlen, C. Allende Prieto, V. Belokurov, L. Beraldo e Silva, D. Brooks, A. Byström, T. Claybaugh, K. Dawson, A. Dey, P. Doel, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, J. Han, K. Honscheid, T. Kisner, A. Kremin, A. Lambert, M. Landriau, L. Le Guillou, M. E. Levi, A. de la Macorra, M. Manera, P. Martini, G. E. Medina, A. Meisner, R. Miquel, J. Moustakas, A. D. Myers, J. Najita, C. Poppett, F. Prada, M. Rezaie, G. Rossi, A. H. Riley, E. Sanchez, D. Schlegel, M. Schubnell, D. Sprayberry, G. Tarlé, G. Thomas, B. A. Weaver, R. H. Wechsler, R. Zhou, H. Zou   +53 more
doaj   +1 more source

A Unified Halo Mass Function Across Dark Matter Models from High-Resolution Multi-Scale Simulations

The Open Journal of Astrophysics
We measure the dark matter halo mass function, with backsplash halos removed, from a wide range of cosmological-box and zoom-in simulations. These include the MultiDark Planck boxes, along with a suite of zoom-in simulations of Group, Milky Way, and LMC ...
Andrew Benson, Ethan O. Nadler, Xiaolong Du, Vera Gluscevic   +3 more
doaj   +1 more source

Evolution of the Milky Way Halo by Accretion of Dwarf Satellite Galaxies

, 2011
Within the Cold Dark Matter scenario the hierarchical merging paradigm is the natural result to form massive galactic halos by the minor mergers of sub-halos and, by this, inherently their stellar halo.
G. Hensler, M. Petrov
core   +1 more source

Milky Way-est: Cosmological Zoom-in Simulations with Large Magellanic Cloud and Gaia–Sausage–Enceladus Analogs

The Astrophysical Journal
We present Milky Way-est, a suite of 20 cosmological cold-dark-matter-only zoom-in simulations of Milky Way (MW)-like host halos. Milky Way-est hosts are selected such that they (i) are consistent with the MW’s measured halo mass and concentration, (ii ...
Deveshi Buch, Ethan O. Nadler, Risa H. Wechsler, Yao-Yuan Mao   +3 more
doaj   +1 more source

C-19 and Hot, Wide Star Streams

The Astrophysical Journal
The C-19 star stream has the abundance characteristics of an unusually metal-poor globular cluster but kinematically is uncharacteristically hot and wide for a cluster stream, having a line-of-sight velocity dispersion of 7  ±  2 km s ^−1 and a 1 σ width
Raymond G. Carlberg, Rodrigo Ibata, Nicolas F. Martin, Else Starkenburg, David S. Aguado, Khyati Malhan, Kim Venn, Zhen Yuan   +7 more
doaj   +1 more source

The Distant Milky Way Halo from the Southern Hemisphere: Characterization of the LMC-induced Dynamical Friction Wake

The Astrophysical Journal
The infall of the Large Magellanic Cloud (LMC) into the Milky Way’s halo impacts the distribution of stars and dark matter (DM) in our Galaxy. Mapping the observational consequences of this encounter can inform us about the properties of both galaxies ...
Manuel Cavieres, Julio Chanamé, Camila Navarrete, Yasna Ordenes-Briceño, Nicolás Garavito-Camargo, Gurtina Besla, Maren Hempel, A. Katherina Vivas, Facundo Gómez   +8 more
doaj   +1 more source

The Milky Way Tomography with SDSS. V. Mapping the Dark Matter Halo

, 2014
We present robust constraints from the Sloan Digital Sky Survey (SDSS) on the shape and distribution of the dark matter halo within the Milky Way (MW). Using the number density distribution and kinematics of SDSS halo stars, we probe the dark matter distribution to heliocentric distances exceeding 10 kpc and galactocentric distances exceeding 20 kpc ...
Loebman, Sarah R., Ivezic, Zeljko, Quinn, Thomas R., Bovy, Jo, Christensen, Charlotte R., Juric, Mario, Roskar, Rok, Brooks, Alyson M., Governato, Fabio   +8 more
openaire   +2 more sources

Predicting the XRISM dark matter decay signal in the Milky Way halo [PDF]

Dark matter may be detected in X-ray decay, including from the decay of the dark matter particles that make up the Milky Way (MW) halo. We use a range of density profiles to compute X-ray line intensity profiles, with a focus on the resonantly produced ...
Lovell, M R
core   +1 more source