Results 111 to 120 of about 12,885 (260)
A Study of Abundance Patterns in the Sextans and Sculptor Dwarf Spheroidal Galaxies
The Astrophysical JournalIn this work, we employ a multicomponent decomposition model to study the Sextans and Sculptor dwarf spheroidal galaxies, which have distinct evolutionary histories.
Shuaishuai Yang +3 more
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Dark Matter Searches with HAWC
, 2017 The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a wide field-of-view observatory sensitive to 0.5 TeV - 100 TeV gamma-rays and cosmic-rays in the State of Puebla, Mexico at an altitude of 4100m.
Smith, Andrew J., Yapici, Tolga
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Dwarf Spheroidal Galaxies and Globular Clusters [PDF]
Symposium - International Astronomical Union, 1988 Recent observational results for dwarf spheroidal galaxies are reviewed and discussed. In particular, the differences in stellar populations between dwarf spheroidal galaxies and globular clusters are highlighted. It seems most probable that the origin and evolution of dwarf spheroidal galaxies was very different from that of globular clusters.
openaire +2 more sources
Search for annihilating Dark Matter towards dwarf galaxies with the Cherenkov Telescope Array
EPJ Web of Conferences, 2017 The standard model of cosmology indicates that approximately 27% of the energy density of the Universe is in the form of dark matter. The nature of dark matter is an open question in modern physics.
Morselli Aldo, Rodríguez Gonzalo
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Relieving Tensions Related to the Dark Matter Interpretation of the Fermi-LAT Data
Galaxies, 2018 Recently, many studies indicate that the GeV gamma ray excess signal from the central Milky Way can be best explained by ∼40–50 GeV dark matter annihilating via the b b ¯ channel.
Man Ho Chan
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Maximally self-interacting dark matter: models and predictions
Journal of High Energy Physics, 2020 We study self-interacting dark matter (SIDM) scenarios, where the s-wave self-scattering cross section almost saturates the Unitarity bound. Such self-scattering cross sections are singly parameterized by the dark matter mass, and are featured by strong ...
Ayuki Kamada +2 more
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Impulsive Mixing of Stellar Populations in Dwarf Spheroidal Galaxies
The Astrophysical JournalWe study the response of mono-energetic stellar populations with initially isotropic kinematics to impulsive and adiabatic changes to an underlying dark matter potential.
Raphaël Errani +4 more
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, 2007 Radial velocity dispersion in spheroidal and elliptical galaxies, as a function of radial distance from the center of the galaxy, has been derived from Cosmological Special Relativity.
F.J. Oliveira +7 more
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An Analytical Galactic Chemical Evolution Model with Gas Inflow and a Terminal Wind
The Astrophysical JournalWe present a new analytical galactic chemical evolution (GCE) model with gas inflow, internally caused outflow, and extra gas loss after a period of time. The latter mimics the ram pressure stripping of a dwarf satellite galaxy near the pericenter of its
Kateryna A. Kvasova, Evan N. Kirby
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The Astrophysical Journal Supplement SeriesIn this study, we compare the structural parameters of ultradiffuse galaxies (UDGs) to those of other dwarf galaxies and investigate whether UDGs form a distinct population.
Raphael Zöller +3 more
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