Results 1 to 10 of about 286,073 (277)

Photoluminescence of the Au38(SR)26 nanocluster comprises three radiative processes. [PDF]

open access: yesCommun Chem, 2023
Atomically precise gold nanoclusters display useful photoluminescence properties, but limitations in synthetic methods and characterization techniques have hindered their detailed exploration.
Luo L, Liu Z, Du X, Jin R.
europepmc   +2 more sources

Perspectives on Gravity-Induced Radiative Processes in Astrophysics

open access: yesGalaxies, 2015
Single-vertex Feynman diagrams represent the dominant contribution to physical processes, but are frequently forbidden kinematically. This is changed when the particles involved propagate in a gravitational background and acquire an effective mass ...
Giorgio Papini
doaj   +4 more sources

Radiative torque alignment: essential physical processes [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2008
We study the physical processes that affect the alignment of grains subject to radiative torques (RATs). To describe the action of RATs, we use the analytical model (AMO) of RATs introduced in Paper I. We focus our discussion on the alignment by anisotropic radiation flux with respect to magnetic field, which defines the axis of grain Larmor precession.
Hoang, Thiem, Lazarian, Alex
openaire   +5 more sources

Equilibrium and equilibration in a gluon plasma with improved matrix elements

open access: yesEPJ Web of Conferences, 2014
The hot and dense matter created in the early stage of a relativistic heavy ion collision is composed mainly of gluons. Radiative processes can play an important role for the thermalization of such partonic systems.
Zhang Bin
doaj   +3 more sources

Operator ordering in quantum radiative processes [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2003
In this work we reexamine quantum electrodynamics of atomic eletrons in the Coulomb gauge in the dipole approximation and calculate the shift of atomic energy levels in the context of Dalibard, Dupont-Roc and Cohen-Tannoudji (DDC) formalism by considering the variation rates of physical observables.
Tomazelli, J. L., Costa, L. C.
openaire   +5 more sources

Importance of radiative transfer processes in urban climate models: a study based on the PALM 6.0 model system [PDF]

open access: yesGeoscientific Model Development, 2022
Including radiative transfer processes within the urban canopy layer into microscale urban climate models (UCMs) is essential to obtain realistic model results.
M. H. Salim   +10 more
doaj   +1 more source

Data for Photodissociation of Some Small Molecular Ions Relevant for Astrochemistry and Laboratory Investigation

open access: yesData, 2022
The calculated photodissociation data of some small molecular ions have been reported. The cross-sections and spectral rate coefficients data have been studied using a quantum mechanical method. The plasma parameters, i.e., conditions, cover temperatures
Vladimir A. Srećković   +5 more
doaj   +1 more source

Aerosol Shortwave Radiative Heating and Cooling by the 2017 and 2023 Chilean Wildfire Smoke Plumes

open access: yesGeophysical Research Letters, 2023
The aerosol shortwave, direct radiative effects of smoke plumes from Chilean wildfires in 2017 and 2023 were derived from satellite observations in both cloud‐free and cloud scenes.
Martin deGraaf   +2 more
doaj   +1 more source

Open-Source Radiative Modeling Tools for Extragalactic VHE Gamma-ray Sources

open access: yesGalaxies, 2022
In this review, we discuss various open-source software for modeling the broadband emission of extragalactic sources from radio up to the highest gamma-ray energies.
Cosimo Nigro, Andrea Tramacere
doaj   +1 more source

Gamma-ray Bursts at the Highest Energies

open access: yesUniverse, 2021
Emission from Gamma-ray bursts is thought to be powered mainly by synchrotron radiation from energetic electrons. The same electrons might scatter these synchrotron seed photons to higher (>10 GeV) energies, building a distinct spectral component ...
Lara Nava
doaj   +1 more source

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