Results 111 to 120 of about 2,655,258 (212)
Dark matter in ALFALFA galaxies
Astronomy & AstrophysicsAims. This paper aims to investigate the galaxy-halo connection using a large sample of individual galaxies with H I -integrated spectra. We determined their dark matter content by applying a dynamical method based on H I line ...
Meng Yang +6 more
openaire +2 more sources
Probing the Dark Matter Halos of External Galaxies with Stellar Streams
The Astrophysical JournalStellar streams have proven to be powerful tools for measuring the Milky Way’s gravitational potential and hence its dark matter (DM) halo. In the coming years, the Vera Rubin Observatory, Euclid, ARRAKIHS, and the Nancy Grace Roman Space Telescope will ...
Madison Walder +3 more
doaj +1 more source
Halo Substructure Boosts to the Signatures of Dark Matter Annihilation
Galaxies, 2019 The presence of dark matter substructure will boost the signatures of dark matter annihilation. We review recent progress on estimates of this subhalo boost factor—a ratio of the luminosity from annihilation in the subhalos to that originating the ...
Shin’ichiro Ando +2 more
doaj +1 more source
Tidal Suppression of Fuzzy Dark Matter Heating in Milky Way Satellite Galaxies
The Astrophysical Journal LettersMany previous studies have imposed stringent constraints on the particle mass of fuzzy dark matter (FDM) by analyzing observations of Galactic satellite galaxies, which show no significant evidence of the heating effect predicted by FDM.
Yu-Ming Yang +3 more
doaj +1 more source
Analysis of Galaxies at the Extremes: Failed Galaxy Progenitors in the MAGNETICUM Simulations
The Open Journal of AstrophysicsThere is increasing observational evidence for a “failed galaxy” formation pathway for ultra-diffuse galaxies (UDGs) at low redshift however they currently lack simulated counterparts.
Jonah S. Gannon +7 more
doaj +1 more source
Globular Cluster Distributions as a Dynamical Probe of Dark Matter
The Astrophysical JournalGlobular clusters (GCs) act as massive probe particles traversing the dark matter halos of their host galaxies. Gravitational dynamical friction due to halo particles causes GC orbits to contract over time, providing a beyond-mean field test of the cold ...
Nativ Ben-Yeda, Kfir Blum, Inbar Havilio
doaj +1 more source
The spin and orientation of dark matter halos within cosmic filaments
, 2009 Clusters, filaments, sheets, and voids are the building blocks of the cosmic web. Forming dark matter halos respond to these different large-scale environments, and this in turn affects the properties of galaxies hosted by the halos.
Yang, X. +11 more
core +1 more source
Dark galactic halos without dark matter
, 2015 Using standard Einstein theory, baryonic mass cannot account for observed galactic rotation velocities and gravitational lensing, attributed to galactic dark-matter halos.
R. K. Nesbet
core +1 more source
Leaving No Branches Behind: Predicting Baryonic Properties of Galaxies from Merger Trees
The Astrophysical JournalGalaxies play a key role in our endeavor to understand how structure formation proceeds in the Universe. For any precision study of cosmology or galaxy formation, there is a strong demand for huge sets of realistic mock galaxy catalogs, spanning ...
Chen-Yu Chuang +4 more
doaj +1 more source
The distribution of dark matter in galaxies: Constant-density dark halos envelop the stellar disks
, 2001 In this paper we review the main and the most recent evidence for the presence of a core radius in the distribution of the dark matter around spiral galaxies.
Borriello A. +4 more
core +1 more source