Results 51 to 60 of about 78,490 (277)

The Halo Occupation Distribution Modeling of X-Ray-selected Active Galactic Nuclei at 0.6 < z < 2.6 in the COSMOS Field

The Astrophysical Journal
We conduct precise measurements of active galactic nucleus (AGN) clustering at z ∼ 1 and z ∼ 2 by measuring the two-point cross-correlation function (CCF) between galaxies and X-ray-selected AGNs, and the two-point autocorrelation function (ACF) of ...
Hiroyuki Ikeda, Takamitsu Miyaji, Taira Oogi, Yoshiki Toba, Héctor Aceves, Stefano Marchesi, Viola Allevato, Akke Viitanen, Francesca Civano   +8 more
doaj   +1 more source

Broad iron lines in Active Galactic Nuclei [PDF]

, 2000
An intrinsically narrow line emitted by an accretion disk around a black hole appears broadened and skewed as a result of the Doppler effect and gravitational redshift.
A. J. Young, Antonucci R., C. S. Reynolds, Dabrowski Y., Fabian A. C., Fabian A. C., Fanton C., George I. M., Ghisellini G., Gierlinski M., Grandi P., Guainazzi M., Guainazzi M., Guilbert P. W., Iwasawa K., Iwasawa K., K. Iwasawa, Kormendy J., Makishima K., Martocchia A., Matt G., Matt G., Matt G., Matt G., Mushotzky R. F., Nandra K., Nandra K., Nishiura S., Otani C., Revnivtsev M., Reynolds C. S., Reynolds C. S., Reynolds C. S., Ross R. R., Ross R. R., Shakura N. L., Vainshtein L. A., Zdziarski A. A.,  A. C. Fabian   +38 more
core   +3 more sources

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

NuSTAR Observation of the TeV-detected Radio Galaxy 3C 264: Core Emission and the Hot Accretion Flow Contribution

The Astrophysical Journal
3C 264 is one of the few FRI radio galaxies with detected TeV emission. It is a low-luminosity active galactic nucleus (LLAGN) and is generally associated with a radiatively inefficient accretion flow (RIAF).
Ka-Wah Wong, Colin M. Steiner, Allison M. Blum, Dacheng Lin, Rodrigo Nemmen, Jimmy A. Irwin, Daniel R. Wik   +6 more
doaj   +1 more source

Search and Characterization of Remnant Radio Galaxies in the XMM-LSS Deep Field

The Astrophysical Journal, 2023
The remnant phase of a radio galaxy is characterized by the cessation of active galactic nuclei activity, resulting in the jets ceasing to feed plasma to the radio lobes.
Sushant Dutta, Veeresh Singh, C. H. Ishwara Chandra, Yogesh Wadadekar, Abhijit Kayal, Ian Heywood   +5 more
doaj   +1 more source

THE EVOLUTION OF ACTIVE GALACTIC NUCLEI AND THEIR SPINS [PDF]

The Astrophysical Journal, 2013
ApJ, in ...
Marek Sikora, Andrea Merloni, Marta Volonteri, Marta Volonteri, Jean-Pierre Lasota, Jean-Pierre Lasota   +5 more
openaire   +4 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

NuSTAR Observes Two Bulgeless Galaxies: No Hard X-Ray AGN Detected in NGC 4178 or J0851+3926

The Astrophysical Journal, 2023
The discovery over the last several decades of low- and moderate-luminosity active galactic nuclei (AGNs) in disk-dominated galaxies—which show no “classical” bulges—suggests that secular mechanisms represent an important growth pathway for supermassive ...
Ryan W. Pfeifle, Shobita Satyapal, Claudio Ricci, Nathan J. Secrest, Mario Gliozzi, Thomas Bohn, Gabriela Canalizo, Michael A. Reefe   +7 more
doaj   +1 more source

Changing-look active galactic nuclei

Nature Astronomy, 2023
Active Galactic Nuclei (AGN) are known to show flux variability over all observable timescales and across the entire electromagnetic spectrum. Over the past decade, a growing number of sources have been observed to show dramatic flux and spectral changes, both in the X-rays and in the optical/UV.
Claudio Ricci, Benny Trakhtenbrot
openaire   +2 more sources

Deep Learning‐Assisted Coherent Raman Scattering Microscopy

Advanced Intelligent Discovery, EarlyView.
The analytical capabilities of coherent Raman scattering microscopy are augmented through deep learning integration. This synergistic paradigm improves fundamental performance via denoising, deconvolution, and hyperspectral unmixing. Concurrently, it enhances downstream image analysis including subcellular localization, virtual staining, and clinical ...
Jianlin Liu, Rujia Liu, Xinyan Zhang, Xun Chen, Shuhua Yue   +4 more
wiley   +1 more source