Results 41 to 50 of about 173,637 (267)
Imprint of Pressure on Characteristic Dark Matter Profiles: The Case of ESO0140040
Galaxies, 2020 We investigate the dark matter distribution in the spiral galaxy ESO0140040, employing the most widely used density profiles: the pseudo-isothermal, exponential sphere, Burkert, Navarro-Frenk-White, Moore and Einasto profiles.
Kuantay Boshkayev +4 more
doaj +1 more source
Dark Matter in Dwarf Galaxies: The First Dark Galaxy?
, 2003 4 pages, 2 color figures, uses newpasp.sty. To appear in the proceedings of the conference "Satellites and Tidal Streams", La Palma, Spain, 26-30 May 2003, eds. F. Prada, D.
Simon, Joshua D. +2 more
openaire +2 more sources
Uspekhi Fizicheskih Nauk, 2017 Abstract Dark matter in galaxies, its abundance, and its distribution remain a subject of long-standing discussion, especially in view of the fact that neither dark matter particles nor dark matter bodies have yet been found. Experts’ opinions range from ‘a very large number of completely dark galaxies exist’ to ‘nonbaryonic dark ...
Zasov, A. V. +3 more
openaire +2 more sources
Galactic cannibalism and CDM density profiles [PDF]
, 2004 Using N-body simulations we show that the process of formation of the brightest cluster galaxy through dissipationless galactic cannibalism can affect the inner cluster dark matter density profile.
Barnes +48 more
core +2 more sources
Studying the Patterns of the Universe
Open Astronomy, 2011 The SDSS galaxy catalog is one of the best databases for galaxy distribution studies. The SDSS DR8 data is used to construct the galaxy cluster catalog.
Sepp T. +4 more
doaj +1 more source
DARK MATTER ANNIHILATION IN THE GALAXY
Particle Physics at the Year of Astronomy, 2006 The possibility of amplification of the annihilation signal from dark matter in the Galaxy halo due to its clusterization into small-mass clumps (about the Moon’s or Earth’s mass) is discussed. Formation of dark-matter clumps is considered within the conventional cosmological model taking into account their hierarchical clustering and tidal destruction.
V. S. Berezinsky +2 more
openaire +1 more source
, 2003 After a brief introduction to standard cosmology and the dark matter problem in the the Universe, we consider a self-gravitating noninteracting fermion gas at nonzero temperature as a model for the dark matter halo of the Galaxy. This fermion gas model is then shown to imply the existence of a supermassive compact dark object at the Galactic center.
Bilic, Neven +2 more
openaire +2 more sources
Lensing galaxies: light or dark?
Astronomy & Astrophysics, 1998 In a recent paper, Hawkins (1997) argues on the basis of statistical studies of double-image gravitational lenses and lens candidates that a large population of dark lenses exists and that these outnumber galaxies with more normal mass-to-light ratios by a factor of 3:1.
Jackson, Neal J. F. +6 more
openaire +6 more sources
Detection of anti-correlation of hot and cold baryons in galaxy clusters
Nature Communications, 2019 Galaxy clusters contain vast amount of dark matter and baryonic matter. Here the authors show the observational detection of the anti-correlation of gas mass and stellar mass observables in the most massive galaxy clusters, indicating such clusters ...
Arya Farahi +12 more
doaj +1 more source
Disk Galaxies Are Self-similar: The Universality of the H i-to-Halo Mass Ratio for Isolated Disks
The Astrophysical Journal Letters, 2023 Observed scaling relations in galaxies between baryons and dark matter global properties are key to shed light on the process of galaxy formation and on the nature of dark matter.
Marie Korsaga +9 more
doaj +1 more source