Results 101 to 110 of about 73,293 (324)
Flattening and kinematics of the galactic halo [PDF]
Monthly Notices of the Royal Astronomical Society, 1991 The Jeans equations are used to study the galactic halo. Relations are derived between the axial ratio q of the metal-poor halo, the axial ratio p of the dark halo, and the local velocity ellipsoid of metal-poor halo stars. Comparison with observational data implies that (1) neither models in which the principal axes of the velocity ellipsoid align ...
openaire +3 more sources
, 2002 Using the EGRET data and an improved point source analysis, including an energy dependent point spread function and an unbinned maximum likelihood technique, we have been able to place considerably lower limits on the gamma ray flux from the galactic ...
Allanach +17 more
core +1 more source
Advances in Topological Thermoelectrics: Harnessing Quantum Materials for Energy Applications
Advanced Materials, EarlyView.Topological materials offer a novel platform for thermoelectric energy conversion through unique band features, including band inversion, linear Dirac bands, surface states, and Berry curvature. These quantum characteristics enable enhanced longitudinal and transverse thermoelectric effects, establishing topological thermoelectrics as a promising ...
Guangsai Yang +8 more
wiley +1 more source
CHANG-ES. XXXV. Cosmic Ray Transport and Magnetic Field Structure of NGC 3556 at 3 GHz
The Astrophysical JournalRadio halos of edge-on galaxies are crucial for investigating cosmic ray propagation and magnetic field structures in galactic environments. We present VLA C-configuration S -band (2–4 GHz) observations of the spiral galaxy NGC 3556, a target from the ...
Jianghui Xu +9 more
doaj +1 more source
DAMA/LIBRA results and perspectives of the second stage [PDF]
Ядерна фізика та енергетика, 2013 The DAMA/LIBRA experiment is mainly dedicated to the investigation on DM particles in the Galactic halo by exploiting the model independent Dark Matter (DM) annual modulation signature.
R. Bernabei +14 more
doaj
Galactic Spiral Pattern beyond the Optical Size Induced by the Triaxial Dark Halo
Open Astronomy, 2015 We suggest a possible mechanism for the formation of non-tidal gaseous structures in galactic outskirts. According to recent observations, extended spiral structures are detected beyond the optical radii Ropt in numerous disk galaxies.
Butenko M., Khoperskov A., Khoperskov S.
doaj +1 more source
Advanced Materials Interfaces, EarlyView.Lithographically defined concentric micro‐ and nanostructures systematically designed and fabricated as reproducible arrays for Surface‐enhanced Raman spectroscopy applications. Abstract Topologically designed micro‐ and nanostructured surface‐enhanced Raman scattering (SERS) substrates propel the advancements of innovative applications, including ...
David Femi Odetade +2 more
wiley +1 more source
EPJ Web of Conferences, 2016 The DAMA project develops and uses new/improved low background scintillation detectors to investigate the Dark Matter (DM) particle component(s) in the galactic halo and rare processes deep underground at the Gran Sasso National Laboratory (LNGS) of the ...
Bernabei R. +16 more
doaj +1 more source
Organic Ferroelectric Synaptic Transistors for Neural Image Recognition Networks
Advanced Materials Interfaces, Volume 12, Issue 13, July 14, 2025.All organic transistors, where both the dielectric and semiconducting layers are polymeric, are developed as electrical synaptic devices. Two copolymers of PVDF as the dielectric layer with large differences in their saturation polarizability and memory window are chosen.
Evan Restuccia +2 more
wiley +1 more source
Kinematic Modeling of Distant Galaxies
Open Astronomy, 2012 Evolution of galaxies is one of the most actual topics in astrophysics. Among the most important factors determining the evolution are two galactic components which are difficult or even impossible to detect optically: the gaseous disks and the dark ...
Kipper Rain, Tempel Elmo, Tamm Antti
doaj +1 more source