Results 81 to 90 of about 4,289,171 (382)
An infrared flash contemporaneous with the γ-rays of GRB 041219a [PDF]
Nature, 2005 The explosion that results in a cosmic gamma-ray burst (GRB) is thought to produce emission from two physical processes: the central engine gives rise to the high-energy emission of the burst through internal shocking, and the subsequent interaction of the flow with the external environment produces long-wavelength afterglows.
Seth D. Hornstein +31 more
openaire +4 more sources
A Different Perspective on the Solid Lubrication Performance of Black Phosphorous: Friend or Foe?
Advanced Engineering Materials, EarlyView.Researchers investigate black phosphorous (BP) as a standalone solid lubricant coating through ball‐on‐disc linear‐reciprocating sliding experiments in dry conditions. Testing on different metals shows BP doesn't universally reduce friction and wear. However, it achieves 33% friction reduction on rougher iron surfaces and 23% wear reduction on aluminum.
Matteo Vezzelli +5 more
wiley +1 more source
Revista UniVap, 2023 Here we present experimental results on the irradiation of ethanol ice (CH3CH2OH) by broadband soft X-rays to simulate the effect processing of organic-rich astrophysical ices by space radiation.
Sergio Pilling, Fabricio M. Freitas
doaj +1 more source
Subdiffractional focusing and guiding of polaritonic rays in a natural hyperbolic material [PDF]
Nature Communications, 2015 Uniaxial materials whose axial and tangential permittivities have opposite signs are referred to as indefinite or hyperbolic media. In such materials, light propagation is unusual leading to novel and often non-intuitive optical phenomena. Here we report
S. Dai +14 more
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.Molecular dynamics simulations are advancing the study of ribonucleic acid (RNA) and RNA‐conjugated molecules. These developments include improvements in force fields, long‐timescale dynamics, and coarse‐grained models, addressing limitations and refining methods.
Kanchan Yadav, Iksoo Jang, Jong Bum Lee
wiley +1 more source
Heat transparent high intensity high efficiency solar cell [PDF]
, 1982 An improved solar cell design is described. A surface of each solar cell has a plurality of grooves. Each groove has a vertical face and a slanted face that is covered by a reflecting metal.
Evans, J. C., Jr.
core +1 more source
Hot accretion flow in black hole binaries: a link connecting X-rays to the infrared [PDF]
, 2012 Multiwavelength observations of Galactic black hole transients have opened a new path to understanding the physics of the innermost parts of the accr etion flows. While the processes giving rise to their X-ray continuum have been studied extensively, the
A. Veledina, J. Poutanen, I. Vurm
semanticscholar +1 more source
Gamma-ray burster counterparts - Infrared
The Astrophysical Journal, 1987 The discovery of an IR counterpart to a gamma-ray burster (GRB) would be a big step forward in understanding this enigmatic phenomenon. A program of searching for IR emission from the smallest GRB source regions has been initiated. Seven boxes have been searched with ground-based telescopes at a wavelength of 2.2 microns and 23 with the IRAS data base ...
C. Barat +13 more
openaire +2 more sources
Advanced Engineering Materials, EarlyView.A new experimental setup, incorporating digital image correlation and infrared thermography in combination with inductive‐conductive heating for precise temperature control, is used to analyze the mechanical behavior and microstructural changes of sheet metal under complex thermomechanical test conditions that represent quench and partitioning ...
Christian Illgen +4 more
wiley +1 more source
Coherent hard x-rays from attosecond pulse train-assisted harmonic generation
, 2007 High-order harmonic generation from atomic systems is considered in the crossed fields of a relativistically strong infrared laser and a weak attosecond-pulse train of soft x-rays.
Hatsagortsyan, Karen Z. +3 more
core +1 more source