Results 41 to 50 of about 73,052 (295)
BARYONIC DARK CLUSTERS IN GALACTIC HALOS [PDF]
International Journal of Modern Physics D, 1996 Besides MACHOs (Massive Astrophysical Compact Halo Objects) discovered by microlensing, cold molecular clouds (mainly of H 2) may well contribute substantially to the galactic halo dark matter. We describe a model for the formation and evolution of proto globular clusters towards either globular clusters or dark clusters of MACHOs and molecular clouds,
DE PAOLIS, Francesco +3 more
openaire +2 more sources
The connection between the Galactic halo and ancient Dwarf Satellites
, 2017 We explore the hypothesis that the classical and ultra-faint dwarf spheroidal satellites of the Milky Way have been the building blocks of the Galactic halo by comparing their [O/Fe] and [Ba/Fe] versus [Fe/H] patterns with the ones observed in Galactic ...
Matteucci, F. +3 more
core +1 more source
European Physical Journal C: Particles and Fields, 2022 Dark matter (DM) annihilation in the galactic halo can be enhanced relative to that in the early Universe due to the Breit–Wigner enhancement, if the DM particles annihilate through a narrow resonance.
Yu-Chen Ding +3 more
doaj +1 more source
Galactic haloes in MONDian cosmological simulations [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 In this paper a series of high-resolution n-body simulations is presented in which the equations of motion have been changed to account for MOdified Newtonian Dynamics (MOND). It is shown that a low-Omega0 MONDian model with an appropriate choice for the normalisation sigma8 can lead to similar clustering properties at redshift z=0 as the commonly ...
Knebe, Alexander, Gibson, Brad K.
openaire +3 more sources
EPJ Web of Conferences, 2017 We present our project to calibrate the RR Lyræ period-luminosity-metallicity relation using a sample of Galactic calibrators in the halo and globular clusters.
Marengo Massimo +7 more
doaj +1 more source
A Catalog of Distance Determinations for the LAMOST DR8 K Giants in the Galactic Halo
The Astronomical Journal, 2023 We present a catalog of distances for 19,544 K giants drawn from Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) DR8. Most of them are located in the halo of the Milky Way up to ∼120 kpc.
Lan Zhang +6 more
doaj +1 more source
Dark Matter Substructure within Galactic Halos [PDF]
The Astrophysical Journal, 1999 We use numerical simulations to examine the substructure within galactic and cluster mass halos that form within a hierarchical universe. Clusters are easily reproduced with a steep mass spectrum of thousands of substructure clumps that closely matches observations.
Moore, Ben +6 more
openaire +2 more sources
The Parkes Galactic Meridian Survey (PGMS): observations and CMB polarization foreground analysis [PDF]
, 2010 We present observations and CMB foreground analysis of the Parkes Galactic Meridian Survey (PGMS), an investigation of the Galactic latitude behaviour of the polarized synchrotron emission at 2.3 GHz with the Parkes Radio Telescope.
Amarie +51 more
core +3 more sources
Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics
Advanced Functional Materials, EarlyView.Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha +18 more
wiley +1 more source
A new look at microlensing limits on dark matter in the Galactic halo
, 2015 The motivation for this paper is to review the limits set on the MACHO content of the Galactic halo by microlensing experiments in the direction of the Large Magellanic Cloud.
Hawkins, M. R. S.
core +1 more source