Off-center dark matter halo leading to strong central disk lopsidedness
Sign Up to like & getrecommendations! Published in 2017 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201630071
Abstract: There is increasing evidence from simulations and observations that the center of the dark matter halo in a Milky Way-type galaxy could be off-center by a few 100 pc with respect to the galactic disk.… read more here.
Keywords: matter halo; disk; dark matter; center dark ... See more keywords
Spurious heating of stellar motions in simulated galactic disks by dark matter halo particles
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab2770
Abstract: We use idealized N-body simulations of equilibrium stellar disks embedded within course-grained dark matter haloes to study the effects of spurious collisional heating on disk structure and kinematics. Collisional heating artificially increases the vertical and… read more here.
Keywords: matter halo; matter; dark matter; mass ... See more keywords
Action-based distribution function modelling for constraining the shape of the Galactic dark matter halo
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab2898
Abstract: We estimate the 3D density profile of the Galactic dark matter (DM) halo within r ≲ 30 kpc from the Galactic centre by using the astrometric data for halo RR Lyrae stars from Gaia DR2. We… read more here.
Keywords: matter halo; dark matter; galactic dark; halo ... See more keywords
Inferring dark matter halo properties for H i-selected galaxies
Sign Up to like & getrecommendations! Published in 2022 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad1183
Abstract: We set constraints on the dark matter halo mass and concentration of ∼22 000 individual galaxies visible both in $\mathrm{H}\, \small {I}$ (from the ALFALFA survey) and optical light (from the SDSS). This is achieved by… read more here.
Keywords: dark matter; halo; halo properties; matter halo ... See more keywords
Adiabatically compressed wave dark matter halo and intermediate-mass-ratio inspirals
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.107.083005
Abstract: The adiabatic growth of a central massive black hole could compress the surrounding dark matter halo, leading to a steeper profile of the dark matter halo. This phenomenon is called adiabatic compression. We investigate the… read more here.
Keywords: matter; dark matter; wave dark; matter halo ... See more keywords