Results 71 to 80 of about 1,662,373 (351)

Introduction to high-energy gamma-ray astronomy

open access: yesComptes Rendus. Physique, 2015
The present issue is the first of of a two-volume review devoted to gamma-ray astronomy above 100 MeV which has witnessed considerable progress over the last 20 years. The motivations for research in this area are explained, the follow-on articles of these two thematic issues are introduced and a brief history of the field is given.
Degrange, Bernard, Fontaine, Gérard
openaire   +5 more sources

Unlocking High‐Performance in All‐Organic Solar Cells by the Development of Organic Electrodes with No Acid and High‐Temperature Treatment and the Effective Preparation Thereof on Organic Multilayer Films

open access: yesAdvanced Functional Materials, EarlyView.
The developed all‐organic solar cells achieve a power conversion efficiency of 8.7%, more than double the previous record. In addition, bioplastic substrates are used to produce environmentally friendly solar cells with an efficiency of 8.6%. These results are achieved by developing high‐performance organic electrodes without acid doping or high ...
Keiju Hashida   +12 more
wiley   +1 more source

VHE Astronomy before the New Millenium [PDF]

open access: yes, 1999
A report on the observational status of VHE astronomy is given.
arxiv   +1 more source

The history of the Russian study of Chinese astronomy [PDF]

open access: yesarXiv, 2021
A short history of Russian researches in Chinese astronomy in 19-20 ...
arxiv  

TAIGA—A hybrid array for high-energy gamma astronomy and cosmic-ray physics

open access: yesNuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment, 2018
The physics motivations and advantages of the new TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) detector are presented.
N. Budnev   +81 more
semanticscholar   +1 more source

Over 18% Efficiency from Halogen‐Free Solvent‐Processed Polymer Solar Cells Enabled by Asymmetric Small Molecule Acceptors with Fluoro‐Thienyl Extended Terminal

open access: yesAdvanced Functional Materials, EarlyView.
An asymmetric non‐fullerene acceptor BTP‐FT is developed by extending the end group of Y6‐BO with thiophene. The conformation of the molecule is determined by the noncovalent F···S interaction as demonstrated by 2D NMR and simulations. An efficiency of 18.39% is achieved in the resulting ternary solar cells processed from toluene.
Jingnan Wu   +14 more
wiley   +1 more source

Testing loop quantum gravity by quasi-periodic oscillations: rotating blackholes

open access: yesEuropean Physical Journal C: Particles and Fields
We investigate a compelling model of a rotating black hole that is deformed by the effects of loop quantum gravity (LQG). We present a simplified metric and explore two distinct geometries: one in which the masses of the black hole and white hole are ...
Jafar Khodagholizadeh   +3 more
doaj   +1 more source

On the KKLT goldstino

open access: yesJournal of High Energy Physics, 2018
We construct general asymptotically Klebanov-Strassler solutions of a five dimensional SU(2) × SU(2) × ℤ 2 × ℤ 2R truncation of IIB supergravity on T 1,1, that break supersymmetry.
Chethan Krishnan   +2 more
doaj   +1 more source

Discovery of an Intrinsic Antiferromagnetic Semiconductor EuSc2Te4 With Magnetism‐Driven Nonlinear Transport

open access: yesAdvanced Functional Materials, EarlyView.
EuSc₂Te₄, an antiferromagnetic semiconductor, exhibits a nonlinear Hall effect (NLHE) characterized by quadratic current–voltage behavior. Combined experimental and theoretical studies reveal that this NLHE is linked to its antiferromagnetism and involves contributions from the quantum metric.
Seng Huat Lee   +15 more
wiley   +1 more source

Tests of CPT invariance in gravitational waves with LIGO-Virgo catalog GWTC-1

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
A discovery of gravitational waves from binary black holes raises a possibility that measurements of them can provide strict tests of CPT invariance in gravitational waves.
Sai Wang, Zhi-Chao Zhao
doaj   +1 more source

Home - About - Disclaimer - Privacy