Results 51 to 60 of about 1,919 (235)

The Most Obscured AGNs in the XMM-SERVS Fields

The Astrophysical Journal, 2023
We perform X-ray spectral analyses to derive the characteristics (e.g., column density, X-ray luminosity) of ≈10,200 active galactic nuclei (AGNs) in the XMM-Spitzer Extragalactic Representative Volume Survey, which was designed to investigate the growth
Wei Yan, W. N. Brandt, Fan Zou, Shifu Zhu, Chien-Ting J. Chen, Ryan C. Hickox, Bin Luo, Qingling Ni, David M. Alexander, Franz E. Bauer, Cristian Vignali, Fabio Vito   +11 more
doaj   +1 more source

Atomic‐Scale Insights into Nanoparticle Exsolution at Dislocations in Dislocation‐Engineered Catalysts

Advanced Materials, EarlyView.
This study reveals an atomic‐level correlation between bulk dislocations and the exsolution of surface nanoparticles through a novel approach for dislocation engineering in epitaxial thin films. Employing in situ scanning transmission electron microscopy, two primary reasons for the frequent nucleation of dislocation‐associated nanoparticles are ...
Moritz Lukas Weber, Moritz Kindelmann, Dylan Jennings, Jan Hölschke, Regina Dittmann, Joachim Mayer, Wolfgang Rheinheimer, Xufei Fang, Felix Gunkel   +8 more
wiley   +1 more source

Investigating Model Dependencies for Obscured Active Galactic Nuclei: A Case Study of NGC 3982

The Astrophysical Journal
X-ray spectroscopy of heavily obscured active galactic nuclei (AGN) offers a unique opportunity to study the circumnuclear environment of accreting supermassive black holes.
Kristína Kallová, Peter G. Boorman, Claudio Ricci   +2 more
doaj   +1 more source

Millikelvin Intracellular Nanothermometry with Nanodiamonds

Advanced Science, EarlyView.
Nanothermometry in living cells is crucial for understanding heat diffusion and advancing cellular biology and drug discovery. Previous studies have reported controversial intracellular temperature variations. Using nanodiamond nanothermometry in macrophages, it is found that, in such experimental setting, apparent temperature changes are actually due ...
Maabur Sow, Jacky Mohnani, Genko Genov, Raphael Klevesath, Elisabeth Mayerhoefer, Yuliya Mindarava, Rémi Blinder, Soumen Mandal, Fabien Clivaz, Raúl B. Gonzalez, Daniel Tews, Christian Laube, Wolfgang Knolle, Amelie Jerlitschka, Farid Mahfoud, Oleg Rezinkin, Mateja Prslja, Yingke Wu, Pamela Fischer‐Posovszky, Martin B. Plenio, Susana F. Huelga, Tanja Weil, Anke Krueger, Gavin W. Morley, Oliver A. Williams, Steffen Stenger, Fedor Jelezko   +26 more
wiley   +1 more source

Chandra Follow-up Observations of Swift-BAT-selected AGNs III

The Astrophysical Journal
The cosmic X-ray background (CXB) is dominated by the obscured and unobscured coronal light of active galactic nuclei (AGN). At energies below 10 keV, the CXB can be well explained by models taking into account the known AGN and the observed distribution
Isaiah S. Cox, Núria Torres-Albà, Stefano Marchesi, Peter Boorman, Xiurui Zhao, Ross Silver, Marco Ajello, Indrani Pal   +7 more
doaj   +1 more source

X-ray absorption in Active Galactic Nuclei

, 2007
10 pages, 4 figures, Conference proceedings to appear in "The Central Engine of Active Galactic Nuclei", ed. L. C. Ho and J.-M. Wang (San Francisco: ASP)
Maiolino, R., Risaliti, G.
openaire   +2 more sources

The X-Ray Coronae in NuSTAR Bright Active Galactic Nuclei

The Astrophysical Journal, 2022
Abstract We present a systematic and uniform analysis of NuSTAR data of a sample of 60 SWIFT BAT-selected AGNs with 10–78 keV signal-to-noise ratio (S/N) > 50, 10 of which are radio loud. We measure their high-energy cutoff E cut or coronal temperature T e using three different spectral models to ...
Jia-Lai Kang, Jun-Xian Wang
openaire   +2 more sources

Spin Matters: A Multidisciplinary Roadmap to Understanding Spin Effects in Oxygen Evolution Reaction During Water Electrolysis

Advanced Energy Materials, EarlyView.
This roadmap offers a forward‐looking perspective on spin enhancement in the oxygen evolution reaction. It highlights how combining systematic experiments, advanced computational modeling, and novel magnetic, chiral, or hybrid materials can deepen the understanding of spin‐dependent catalytic mechanisms.
Emma van der Minne, Priscila Vensaus, Vadim Ratovskii, Seenivasan Hariharan, Jan Behrends, Cesare Franchini, Jonas Fransson, Sarnjeet S. Dhesi, Felix Gunkel, Florian Gossing, Georgios Katsoukis, Ulrike I. Kramm, Magalí Lingenfelder, Qianqian Lan, Yury V. Kolen'ko, Yang Li, Ramsundar Rani Mohan, Jeffrey McCord, Lingmei Ni, Eva Pavarini, Rossitza Pentcheva, David H. Waldeck, Michael Verhage, Anke Yu, Zhichuan J. Xu, Piero Torelli, Silvia Mauri, Narcis Avarvari, Anja Bieberle‐Hütter, Christoph Baeumer   +29 more
wiley   +1 more source

The Response of Warm Absorbers to the Variations in the Ionizing Continuum in the Active Galaxy NGC 4051

The Astrophysical Journal
We present a time-resolved X-ray spectral analysis of the warm absorbers in the Seyfert galaxy NGC 4051, which has an active galactic nucleus (AGN), using observations from the Neutron Star Interior Composition Explorer (NICER).
Dev R. Sadaula, Timothy R. Kallman, Sibasish Laha   +2 more
doaj   +1 more source

Self‐Healing Materials from Electronically Integrated Microscopic Robots

Advanced Intelligent Systems, EarlyView.
Submillimeter robots can use electronically controlled electrodeposition to assemble into a material structure. The resulting aggregate possesses ultralow density, high strength‐to‐weight ratio, and can heal from damage. Further afield, these results clear a path to materials that organize or adapt by directing matter and information at the microscale.
Lucas C. Hanson, William H. Reinhardt, Marc Z. Miskin   +2 more
wiley   +1 more source