Results 21 to 30 of about 608,712 (186)
Atmospheric isoprene measurements reveal larger-than-expected Southern Ocean emissions
Nature Communications, 2023 Abstract Isoprene is a key trace component of the atmosphere emitted by vegetation and other organisms. It is highly reactive and can impact atmospheric composition and climate by affecting the greenhouse gases ozone and methane and secondary organic aerosol formation.
Neil R.P. Harris +12 more
openaire +5 more sources
Exploring manifestation and nature of a dineutron in two-neutron emission using a dynamical dineutron model [PDF]
, 2018 Emission of two neutrons or two protons in reactions and decays is often discussed in terms of "dineutron" or "diproton" emission. The discussion often leans intuitively on something described by Migdal-Watson approximation. In this work we propose a way
Grigorenko, L. V. +2 more
core +2 more sources
Recent methane surges reveal heightened emissions from tropical inundated areas [PDF]
Nature Communications, 2023 Record breaking atmospheric methane growth rates were observed in 2020 and 2021 (15.2±0.5 and 17.8±0.5 parts per billion per year), the highest since the early 1980s. Here we use an ensemble of atmospheric inversions informed by surface or satellite methane observations to infer emission changes during these two years relative to 2019.
Xin Lin +24 more
openaire +6 more sources
Soft gamma-ray galactic ridge emission as unveiled by SPI aboard INTEGRAL [PDF]
, 2007 The origin of the soft gamma-ray (200 keV - 1 MeV) galactic ridge emission is one of the long-standing mysteries in the field of high-energy astrophysics.
Cordier, Bertrand +8 more
core +4 more sources
Distant Emission from Mrk 1239: Origin Revealed
, 2022 New X-ray observations of a hybrid Narrow Line Seyfert 1 (NLS1) galaxy Mrk 1239 with joint NuSTAR and XMM-Newton in the 0.3-40.0 keV band are presented. Below 2 keV, direct AGN emission is obscured revealing a complex RGS spectrum rich in emission lines originating from a two-component plasma (collisionally and photoionized) at large distances from the
Buhariwalla, M.Z., Gallo, L.C., Mao, J.
openaire +1 more source
Carrier Dynamics in Submonolayer InGaAs/GaAs Quantum Dots [PDF]
, 2006 Carrier dynamics of submonolayer (SML) InGaAs/GaAs quantum dots (QDs) were studied by micro-photoluminecence (MPL), selectively excited photoluminescence (SEPL), and time-resolved photoluminescence (TRPL).
Bimberg D. +7 more
core +2 more sources
Spontaneous Otoacoustic Emissions Reveal an Efficient Auditory Efferent Network [PDF]
Journal of Speech, Language, and Hearing Research, 2018 Purpose Understanding speech often involves processing input from multiple modalities. The availability of visual information may make auditory input less critical for comprehension. This study examines whether the auditory system is sensitive to the presence of complementary sources of input when exerting top-down control over
Viorica, Marian +3 more
openaire +2 more sources
Penetrating the Deep Cover of Compton Thick Active Galactic Nuclei [PDF]
, 2006 We analyze observations obtained with the Chandra X-ray Observatory of bright Compton thick active galactic nuclei (AGNs), those with column densities in excess of 1.5 x 10^{24} cm^{-2} along the lines of sight.
Antonucci R. +20 more
core +3 more sources
Multiexciton Lifetimes Reveal Triexciton Emission Pathway in CdSe Nanocrystals [PDF]
Nano Letters, 2018 Multiexcitons in emerging semiconducting nanomaterials play a critical role in potential optoelectronic and quantum computational devices. We describe photon resolved single molecule methods to directly probe the dynamics of biexcitons and triexcitons in colloidal CdSe quantum dots.
Katherine E. Shulenberger +6 more
openaire +4 more sources
The Spatial and Emission Properties of the Large [O iii] Emission Nebula Near M31
The Astrophysical Journal, 2023 Drechsler et al. reported the unexpected discovery of a 1.°5 long [O iii ] emission nebula 1.°2 southeast of the M31 nucleus. Here we present additional images of this large emission arc, called the Strottner–Drechsler–Sainty Object (SDSO), along with ...
Robert A. Fesen +10 more
doaj +1 more source