Results 131 to 140 of about 38,366 (276)

Experimental Indicators of Accretion Processes in Active Galactic Nuclei

, 2017
Bright Active Galactic Nuclei are powered by accretion of mass onto the super massive black holes at the centers of the host galaxies. For fainter objects star formation may significantly contribute to the luminosity. We summarize experimental indicators
Borkar, A., Britzen, S., Busch, G., Eckart, A., Fazeli, N., Garcia-Marin, M., Horrobin, M., Hosseini, S. E., Karas, V., Kunneriath, D., Moser, L., Parsa, M., Peissker, F., Rashed, Y. E., Rauch, C., Sabha, N., Shahzamanian, B., Straubmeier, C., Subroweit, M., Valencia-S., M., Zajacek, M., Zensus, A.   +21 more
core  

Akkermansia muciniphila enhances chicken resistance to infectious bronchitis virus by boosting GABA synthesis and suppressing the NF‐κB inflammatory pathway

iMetaOmics, Volume 3, Issue 1, March 2026.
Infectious bronchitis virus (IBV) represents a major threat to poultry production, with current control strategies offering limited protection. In this study, we demonstrate gut microbiome is a critical determinant of IBV resistance using fecal microbiota transplantation.
Ouyang Peng, Yufang Liu, Xuanci Wang, Yihui Huang, Yiqin Yang, Qixiang Kang, Rui Geng, Guangli Hu, Aiping Lv, Fangyu Hu, Yongbo Xia, Xin Luo, Jiamin Liao, Yihong He, Zhanpeng Kuang, Yunping Du, Yun Zhang, Chunyi Xue, Zongxi Han, Wen‐Jun Li, Lei Dong, Hao Zhang, Yongchang Cao   +22 more
wiley   +1 more source

Continuum Reverberation Mapping of 18 Active Galactic Nuclei over 4 Yr

The Astrophysical Journal
Continuum reverberation mapping probes the size scale of the optical continuum-emitting region in active galactic nuclei (AGN). The source of this emission has long been thought to originate from the accretion disk, but recent studies suggest the broad ...
Jake A. Miller, Edward M. Cackett, Misty C. Bentz, Michael R. Goad, Kirk T. Korista, Ian M. McHardy, Russell W. Carroll   +6 more
doaj   +1 more source

Influence of radiotherapy dose rate on gold nanoparticle‐induced radiosensitization from high dose‐rate brachytherapy and external beam therapy

Medical Physics, Volume 53, Issue 3, March 2026.
Abstract Background Associated normal tissue toxicity from current radiotherapy (RT) treatments limits effective dose escalation in the tumor to achieve nominal treatment results. Gold nanoparticles (GNPs) as radiosensitizing agents to locally increase photoelectron production have gained interest as a safe and viable method to improve therapeutic ...
Daniel Cecchi, Nolan Jackson, Sacha Freeman, Kieren O'Neil, Mehran Goharian, Wayne Beckham, Devika B. Chithrani   +6 more
wiley   +1 more source

Merging, Recoiling, or Slingshotting of Supermassive Black Holes in a Red Active Galactic Nucleus

, 2021
D. Kim, Myungshin Im
openalex   +2 more sources

Integrating Satellite‐Based and Participatory Spatial Analyses for Local, Contextualised, and Nuanced Extreme Heat Hotspot Mapping in Overheated Urban Southeast Asia

Sustainable Development, Volume 34, Issue S2, Page 1015-1033, March 2026.
ABSTRACT Rapid urbanisation in Southeast Asia intensifies extreme‐heat exposure, especially where high population density, extensive impervious surfaces, and limited green cover coincide. This study combines multi‐decadal satellite‐derived land surface temperature (LST) mapping with spatial regression and community participatory mapping to locate ...
Laurence L. Delina, Homer Pagkalinawan, Sharon Feliza Ann Macagba   +2 more
wiley   +1 more source

A Systematic Search for Active Galactic Nucleus Flares in ZTF Data Release 23

The Astrophysical Journal Supplement Series
Active galactic nuclei (AGNs) are known to exhibit stochastic variability across a wide range of timescales and wavelengths. AGN flares are extreme outbursts that deviate from this typical behavior and may trace a range of energetic physical processes ...
Lei He, Zheng-Yan Liu, Rui Niu, Ming-Shen Zhou, Pu-Run Zou, Bing-Zhou Gao, Run-Duo Liang, Liang-Gui Zhu, Jian-Min Wang, Ning Jiang, Zhen-Yi Cai, Ji-an Jiang, Zi-Gao Dai, Ye-Fei Yuan, Yong-Jie Chen, Wen Zhao   +15 more
doaj   +1 more source

Precursors in tidal disruption events: Repeating, fast, and active galactic nucleus-hosted TDEs

Astronomy & Astrophysics
Context. Tidal disruption events (TDEs) are rare transients that provide important insights into the physics of galactic nuclei. A recently identified feature in their optical light curves is the presence of early bump-like structures (precursors) that ...
Veres Patrik Milán
doaj   +1 more source

Multispectral Surface Reflectance as an Indicator of Groundwater Depth for Salt Crust Systems: Insights From the Bonneville Salt Flats, Utah

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract The Bonneville Salt Flats (BSF) in northwestern Utah, USA, has experienced changes in area, thickness, and hydrology over the past century. This study investigates the relationship between multispectral Halite Index (HI) values, which are sensitive to halite moisture content, from Landsat and Sentinel‐2 imagery and groundwater depth (GWD ...
Mark Radwin, Brenda Bowen, Jeremiah Bernau   +2 more
wiley   +1 more source

Optical and X-ray variability in the least luminous active galactic nucleus, NGC 4395 [PDF]

, 1999
P. Lira, Andrew L. Lawrence, P. T. O’Brien, R. A. Johnson, R. Terlevich, N. Bannister   +5 more
openalex   +1 more source