Results 51 to 60 of about 800,105 (334)
X- and Gamma-ray Studies of Cas A: Exposing Core Collapse to the Core
, 2003 In this review of X-ray and gamma-ray observations of Cas A, evidence is discussed that Cas A was a Type Ib supernova of a Wolf-Rayet star with a main sequence mass between 22-25 Msun, that exploded after stellar wind loss had reduced its mass to ~6 Msun.
Arnett +46 more
core +1 more source
Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires
Advanced Functional Materials, EarlyView.In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton +11 more
wiley +1 more source
Proceedings of the International Astronomical Union, 2009 AbstractAstrology meets a large success in our societies, from the private to the political sphere as well as in the media, in spite of the demonstrated inaccuracy of its psychological as well as operational predictions. We analyse here the relations between astrology and astronomy, as well as the criticisms opposed by the latter to the former. We show
openaire +3 more sources
Frontiers of Physics, 2013 Invited review article to appear in the special issue of "Frontiers of Physics" on "High Energy Astrophysics" (eds. B. Zhang & P.
Rieger, F. +2 more
openaire +3 more sources
Fast Neutron Detector Based on Hybrid 2D Perovskite Thin Films
Advanced Functional Materials, EarlyView.This work presents the direct detection of fast neutrons using flexible hybrid 2D perovskite (PEA2PbBr4) thin‐film detectors. Thanks to their high low‐Z elements content and good charge transport, these materials enable efficient neutron detection. The thin film configuration allowed the operation at low voltage, and offer scalability, flexibility, and
Ilaria Fratelli +11 more
wiley +1 more source
Open AstronomyAs China’s only non-core K-12 science subject, astronomy education faces resource constraints. Beijing Planetarium (BJP), home to the Chinese Astronomical Society Popularization Committee, addresses this through tiered programs.
Chong Feng +6 more
doaj +1 more source
Revista Brasileira de Ensino de FísicaThe Astronomy Nucleus of the Federal University of Pará is a science center located in the Brazilian Amazonia, dedicated to spread knowledge on Astronomy to the general public. Over the last ten years, this science center has promoted several activities,
Jocasta Caldas +2 more
doaj +1 more source
Le paysage spatial : de l’Ecole de Barbizon aux Pulp magazines
ReS Futurae, 2015 Le début du xxe siècle hérite non seulement des avancées techniques portées par les suites de la Révolution industrielle mais également des principes humanistes lesquels la science doit être à la portée de tous.
Elsa De Smet
doaj +1 more source
Al1‐xScxN‐Based Ferroelectric Domain‐Wall Memristors
Advanced Functional Materials, EarlyView.(a) Conductive atomic force microscopy (CAFM) image of the initial state bidomain structure of the Al0.85Sc0.15N (a) showing an enhanced conductivity of the head‐to‐head domain boundary. (b) CAFM image of the same area after application of several −65 V, 1 s voltage pulses showing lower conductivity of the generated tail‐to‐tail domain walls.
Haidong Lu +11 more
wiley +1 more source