Results 111 to 120 of about 13,205 (261)
Modeling wave dark matter in dwarf spheroidal galaxies
Journal of Physics: Conference Series, 2015 22 pages, 10 figures, 3 ...
Bray, Hubert L., Parry, Alan R.
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Implications of elemental abundances in dwarf spheroidal galaxies [PDF]
Astronomy & Astrophysics, 2006 Unusual elemental abundance patterns observed for stars belonging to nearby dwarf spheroidal (dSph) galaxies are discussed. Analysis of the [alpha/H] vs. [Fe/H] diagrams where alpha represents Mg or average of alpha-elements reveals that Fe from Type Ia supernovae (SNe Ia) does not contribute to the stellar abundances in the dSph galaxies where the ...
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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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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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Why Are There Dwarf Spheroidal Galaxies?
The Astrophysical Journal, 2001 4 ApJ pages, submitted to ApJ ...
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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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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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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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Metallicity gradients in the Sagittarius dwarf spheroidal galaxy [PDF]
Astronomy & Astrophysics, 2001 Metallicity gradients in the Sagittarius dwarf Galaxy (Sgr) are investigated by using infrared photometric data from the 2MASS survey. To search for metallicity effects, the giant branch in a field situated near the Center of the Sgr is compared to the giant branch in a field situated near its southern edge.
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HI Observations Towards the Sagittarius Dwarf Spheroidal Galaxy
, 1999 We have measured the 21-cm line of Galactic HI over more than 50 square degrees in the direction of the Sagittarius dwarf spheroidal galaxy. The data show no evidence of HI associated with the dwarf spheroidal which might be consider analogous to the Magellanic Stream as it is associated in both position and velocity with the Large Magellanic Cloud ...
Burton, W.B., Lockman, F.J.
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