Results 41 to 50 of about 7,809,762 (287)
The impact of inelastic self-interacting dark matter on the dark matter structure of a Milky Way halo [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 Abstract We study the effects of inelastic dark matter self-interactions on the internal structure of a simulated Milky Way (MW)-size halo. Self-interacting dark matter (SIDM) is an alternative to collisionless cold dark matter (CDM) which offers a unique solution to the problems encountered with CDM on sub-galactic scales.
Kun Ting Eddie Chua +3 more
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On dark matter structure in Milky Way-mass galaxies
, 2022 A set of four paired cosmological simulations of Milky Way-mass galaxies are used to examine the dark matter structure. Particular attention is paid to the ability of simulated velocity distributions to inform the experimental search for dark matter and ...
core +1 more source
Constraining Sterile Neutrino Dark Matter in the Milky Way Halo with Swift-XRT
The Astrophysical Journal, 2022 Abstract We present a search for sterile neutrino dark matter decay signals in the Milky Way’s dark matter halo by considering the entirety of the Swift X-ray Telescope (Swift-XRT) data archive. After filtering the raw archive, we analyze a ∼77 Ms data set containing the full field of view, as well as a ∼41 Ms data set with point sources
Dominic Sicilian +4 more
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The internal structure of Cold Dark Matter Haloes [PDF]
, 2010 Currently favoured cosmological models for structure formation of the Universe assume that a large fraction of the mass of the Universe is 'dark'. The evidence for dark matter comes from observations of its gravitational influence.
Vogelsberger, M., Vogelsberger, Mark P.
core +1 more source
Stream Fanning and Bifurcations: Observable Signatures of Resonances in Stellar Stream Morphology
The Astrophysical Journal, 2023 Recent observations have revealed a trove of unexpected morphological features in many of the Milky Way’s stellar streams. Explanations for such features include time-dependent deformations of the Galactic gravitational potential, local disruptions ...
Tomer D. Yavetz +4 more
doaj +1 more source
A Search for the 3.5 keV Line from the Milky Way’s Dark Matter Halo with HaloSat [PDF]
The Astrophysical Journal, 2021 Abstract Previous detections of an X-ray emission line near 3.5 keV in galaxy clusters and other dark-matter-dominated objects have been interpreted as observational evidence for the decay of sterile neutrino dark matter. Motivated by this, we report on a search for a 3.5 keV emission line from the Milky Way’s galactic dark matter halo ...
E. M. Silich +7 more
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On the Edge: the relation between stellar and dark matter haloes of Milky Way-mass galaxies [PDF]
, 2023 We investigate the build-up of the accreted stellar and dark matter haloes of Milky Way-like galaxies in APOSTLE suite of cosmological hydrodynamics simulations.
Deason, AJ +8 more
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Searches for annihilating dark matter in the Milky Way halo with IceCube [PDF]
Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017), 2017 We present three searches for a neutrino signal from dark matter self-annihilations in the Milky Way. The signal from these events is identified by signatures which start developing within the fiducial volume of the IceCube Neutrino Observatory. The three presented analyses are sensitive to different energy scales and together cover an energy range ...
Samuel Flis, Morten Medici
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A vertically orientated dark matter halo marks a flip of the Galactic disc
Astronomy & AstrophysicsUnveiling the 3D shape of the Milky Way’s dark-matter halo is critical to understanding its formation history. We created an innovative dynamical model that makes minimal assumptions about the internal dynamical structures and accommodates a highly ...
Zhu Ling +7 more
doaj +1 more source
Modelling the Milky Way through adiabatic compression of cold dark matter haloes [PDF]
Astronomy & Astrophysics, 2005 We use the adiabatic compression theory to build a physically well - motivated Milky Way mass model in agreement with the observational data. The visible mass of the Galaxy is distributed in a spheroidal bulge and a multi - components disc parametrized by three galactic parameters, the Sun distance to the galactic centre, R_0, the total bulge mass, M_ ...
Cardone, V. F., Sereno, M.
openaire +2 more sources