Results 71 to 80 of about 9,238,867 (222)
Defects Induced Instability of Perovskite Solar Cells
Advanced Energy and Sustainability Research, Volume 7, Issue 9, September 2026.Defect passivation and grain‐size engineering in perovskite films are achieved through precursor additives, antisolvent additives, interfacial modification, light treatment, surface polishing, and temperature treatment. The synergistic effects suppress defect states and enhance film quality, providing insights into effective strategies for improving ...
Davoud Dastan +13 more
wiley +1 more source
Investigation of the Quasi-periodic Oscillation Phase Lag of RE J1034+396
The Astrophysical JournalWe conduct an in-depth study of the quasi-periodic oscillation (QPO) properties of RE J1034+396 by constructing QPO phase-folded light curves from 10 XMM-Newton observations during 2020–2021.
Wen-Zhong Li +11 more
doaj +1 more source
A Low‐Power Radioisotope XRF Spectrometer for Detection of Light Elements on Planetary Missions
X-Ray Spectrometry, Volume 55, Issue 5, Page 721-729, September/October 2026.ABSTRACT Current X‐ray spectrometers for in situ geochemical analysis on planetary missions typically rely either on X‐ray tubes, which demand electrical power and add mass and thermal complexity, or on alpha particle X‐ray spectrometers (APXS) that use rare 244 Cm sources, and come with severe concerns on radiation safety and isotope availability.
Leandro Silveri +14 more
wiley +1 more source
The Astrophysical JournalWe present a high-resolution X-ray spectroscopic study of the narrow-line Seyfert 1 galaxy NGC 4051 using two XMM-Newton high-resolution Reflection Grating Spectrometer observations.
Roberto Serafinelli +8 more
doaj +1 more source
, 2009 We find a significant anticorrelation between the hard X-ray photon index Gamma and the Eddington ratio L(bol)/L(Edd) for a sample of low-ionization nuclear emission-line regions and local Seyfert galaxies, compiled from literature with Chandra or XMM ...
Gu, Minfeng, Cao, Xinwu
core +1 more source
Jetted Active Galactic Nuclei [PDF]
, 2018 The term "blazar" refers to a cosmic source with a relativistic jet viewed at a small angle, so that the electromagnetic emission is affected by beaming.
Foschini, Luigi (5113958) +1 more
core +1 more source
Ferric Chloride: The Venusian Unknown UV Absorber?
Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.Abstract Near‐ultraviolet imaging of the planet Venus reveals inhomogeneous absorption features in the otherwise bright clouds. This absorption has been studied for nearly 100 years, but identification of the near‐UV absorber remains one of the largest open questions in Venusian research.
Joanna V. Egan +8 more
wiley +1 more source
The Astrophysical Journal Letters, 2023 Recent studies have proposed that the nuclear millimeter continuum emission observed in nearby active galactic nuclei (AGNs) could be created by the same population of electrons that gives rise to the X-ray emission that is ubiquitously observed in ...
Claudio Ricci +12 more
doaj +1 more source
Breaking the σ₈–Ωₘ degeneracy using the clustering of HIGH- x-ray active galactic nuclei [PDF]
, 2010 The clustering of X-ray selected active galactic nuclei (AGNs) appears to be a valuable tool for extracting cosmological information. Using the recent high-precision angular clustering results of ∼30,000 XMM-Newton soft (0.5–2 keV) X-ray sources, which ...
Manolis Plionis
core
Measurement of Ultra-High Energy Cosmic Rays with CHICOS [PDF]
, 2009 The California HIgh school Cosmic ray ObServatory (CHICOS) is a ground-based scintillator array designed to measure the extended air showers of ultra-high energy cosmic rays. The goal of the project is to gain insight into the origin of ultra-high energy
Brobeck, Elina
core +1 more source