Results 61 to 70 of about 3,098 (163)
New Insight from the James Webb Space Telescope on Variable Active Galactic Nuclei
The Astrophysical JournalVariability detected in galaxies is usually attributed to their active galactic nuclei (AGNs). While all AGNs are intrinsically variable, the AGN unification model predicts that Type 2 AGNs rarely vary because their engines are blocked by dust tori ...
Bangzheng Sun +3 more
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Early evolutionary history of the seed
Biological Reviews, Volume 101, Issue 3, Page 1511-1553, June 2026.ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman +2 more
wiley +1 more source
Dual Active Galactic Nuclei on 100 kpc Scales from the Million Quasar Catalog
The Astrophysical Journal Supplement SeriesResearch on dual active galactic nuclei (AGNs) is crucial for understanding the coevolution of galaxies and supermassive black holes. However, the current number of dual AGNs remains scarce. In this work, we selected 171 new dual AGNs, four AGN triplets,
Zhuojun Deng +5 more
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EcoMat, Volume 8, Issue 6, June 2026.A binder‐free Ni–W nanostructured electrode is fabricated via controlled potentiostatic electrodeposition on carbon paper that aligns with circular economy principles. The electrode enables energy‐efficient hydrogen production coupled with urea remediation, achieving 100 mA cm−2 at 1.77 V and degrading 47% of urea over 30 h.
Yi Zeng +9 more
wiley +1 more source
The Astrophysical JournalWe present a new calibration of the broad-line region (BLR) size–luminosity–velocity relation using a sample of 157 active galactic nuclei (AGNs) with reliable measurements of H β time-delay ( τ _H _β ) from S. Wang & J.-H. Woo.
Jong-Hak Woo +3 more
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iMetaOmics, Volume 3, Issue 2, June 2026.Paradigm shift: PCR‐free methods reveal 6–15‐fold higher arbuscular mycorrhizal (AM) fungal abundance than metabarcoding, exposing systematic underestimation across decades of research. Predictive power: AM fungal abundance serves as a community‐level trait that predicts crop yield under drought conditions.
Peilin Chen, John W. Taylor, Cheng Gao
wiley +1 more source
Time-domain Radio-loudness of Active Galactic Nuclei: Intermittency, Memory, and Jet Escape
The Astrophysical Journal LettersThe classical radio-loudness parameter R ≡ f _ν (5 GHz)/ f _ν (4400 Å) divides a radio flux density by an optical/UV accretion tracer, but the two terms do not probe the same clock.
Tao An
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iMetaOmics, Volume 3, Issue 2, June 2026.Prebiotic Ginseng polysaccharides (GP) alleviate mastitis through selective enrichment of gut L. murinus, which elevates its anti‐inflammatory metabolite deoxycholic acid (DCA). Circulating DCA engages mammary epithelial TGR5 receptors, triggering the cAMP–PKA pathway to suppress NF‐κB/NLRP3‐mediated inflammation.
Zhijie Zheng +15 more
wiley +1 more source
Reverberation Mapping Data of NGC 5548 Imply a Multicomponent Broad-line Region
The Astrophysical JournalLine broadening and variability are observational hallmarks of active galactic nuclei (AGN) which allow us to measure supermassive black hole masses as well as constrain the geometry and kinematics of the emitting gas, with the most precise measurements ...
Kirk Long, Jason Dexter
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Identifying the Secondary Jet in the RadioAstron Image of OJ 287
The Astrophysical JournalThe 136 yr long optical light curve of OJ 287 is explained by a binary black hole model where the secondary is in a 12 yr orbit around the primary. Impacts of the secondary on the accretion disk of the primary generate a series of optical flares that ...
Mauri J. Valtonen +28 more
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