Results 61 to 70 of about 73,052 (295)
White dwarfs and Galactic dark matter [PDF]
, 2002 We discuss the recent discovery by Oppenheimer et al (2001) of old, cool white dwarf stars, which may be the first direct detection of Galactic halo dark matter.
Flynn, Chris +2 more
core +3 more sources
Advanced Functional Materials, EarlyView.Two pyridinium‐based ionic liquid templated hybrid manganese halides, (C4Py)2[MnCl4] and (C4Py)2[MnBr4], display similar bulk structures but show significantly different photoluminescence behaviors due to the bromine heavy‐atom effect. Their stable local Mn environments remain intact even in the molten state, allowing applications such as luminescence ...
Biswajit Bhattacharyya +22 more
wiley +1 more source
The Huge Magnetic Toroids in the Milky Way Halo
The Astrophysical JournalThe magnetic fields in our Milky Way can be revealed by the distribution of Faraday rotation measures (RMs) of radio sources behind the Galaxy and of radio pulsars inside the Galaxy. Based on the antisymmetry of the Faraday sky in the inner Galaxy to the
J. Xu, J. L. Han
doaj +1 more source
Traversable wormholes supported by dark matter and monopoles with semiclassical effects
European Physical Journal C: Particles and Fields, 2023 We present a new traversable wormhole explication of Einstein’s field equations supported by the profile of Einasto Dark Matter densities (Einasto in Trudy Inst Astrofiz Alma-Ata 51:87, 1965; PTarO 36:414, 1968; Astron Nachr 291:97, 1969) and global ...
Farook Rahaman +4 more
doaj +1 more source
Binary brown dwarfs in the Galactic halo? [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 Microlensing events towards the Large Magellanic Cloud entail that a sizable fraction of dark matter is in the form of MACHOs (Massive Astrophysical Compact Halo Objects), presumably located in the halo of the Galaxy. Within the present uncertainties, brown dwarfs are a viable candidate for MACHOs.
DE PAOLIS, Francesco +3 more
openaire +4 more sources
Advanced Functional Materials, EarlyView.Gold bipyramids can act as efficient plasmonic nanoheaters, but they often reshape during laser heating. This study shows that oxygen nanobubbles drive oxidative etching and that surface ligands control stability. CTAB‐ and citrate‐coated particles blunt and lose optical performance, whereas polystyrene sulfonate preserves shape and heating by ...
Irene López‐Sicilia +7 more
wiley +1 more source
The Magellanic Stream in Modified Newtonian Dynamics
, 2006 The dynamics of the Magellanic Stream (MS) as a series of clouds extending from the Magellanic Clouds (MCs) to the south Galactic pole is affected by the distribution and the amount of matter in the Milky Way. We calculate the gravitational effect of the
Haghi, Hossein +2 more
core +1 more source
Advanced Materials, EarlyView.AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll +19 more
wiley +1 more source
Galactic Accelerations from the GD-1 Stream Suggest a Tilted Dark Matter Halo
The Astrophysical Journal LettersCold dark matter halos are expected to be triaxial and often tilted relative to the stellar disk. Stellar streams provide a sensitive tracer of the Milky Way’s halo shape though models for the Galactic potential are typically limited to simple, symmetric
Jacob Nibauer, Ana Bonaca
doaj +1 more source
Cosmic stellar relics in the Galactic halo [PDF]
Monthly Notices of the Royal Astronomical Society, 2007 18 pages, 12 figures, submitted to ...
Salvadori, Stefania +2 more
openaire +6 more sources