Results 91 to 100 of about 4,973 (222)
The First Triple Radio Active Galactic Nucleus in an Ongoing Galaxy Merger
The Astrophysical Journal LettersGalaxy mergers are predicted to be a critical stage of merger-driven SMBH growth and galaxy evolution. Systems exhibiting multiple active galactic nuclei (AGN) are an important observational tool for constraining the prevalence and properties of merging ...
Emma Schwartzman +9 more
doaj +1 more source
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
, 2021 International audienceWe explore possible physical origin of correlation between radio wave and very-high-energy neutrino emission in active galactic nuclei (AGN), suggested by recently reported evidence for correlation between neutrino arrival ...
Neronov, Andrii, Semikoz, Dmitri
core +1 more source
The Astrophysical Journal3C 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 +6 more
doaj +1 more source
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
Origin of radio emission from nearby low-luminosity active galactic nuclei
, 2005 We use the observational data in radio, optical, and X-ray wave bands for a sample of active galactic nuclei (AGNs) with measured black hole masses to explore the origin of radio emission from nearby low-luminosity active galactic nuclei (LLAGNs).
Wu, QW, Cao, XW
core
The Innermost Regions of Active Galactic Nuclei – From Radio to X-rays [PDF]
, 2007 Active Galactic Nuclei (AGN) can be probed by at different regions of the electromagnetic spectrum: e.g., radio observations reveal the nature of their relativistic jets and their magnetic fields, and complementarily, X-ray observations give insight into the changes in the accretion disk flows.
Ros, Eduardo +5 more
openaire +2 more sources
VLA FRAMEx. I. Wideband Radio Properties of the AGN in NGC 4388
The Astrophysical JournalWe present the first results from Karl G. Jansky Very Large Array (VLA) observations as a part of the Fundamental Reference Active Galactic Nucleus (AGN) Monitoring Experiment, a program to understand the relationship between AGN accretion physics and ...
Andrew J. Sargent +7 more
doaj +1 more source
The Hard X-Ray Spectral Slope as an Accretion Rate Indicator in Radio-Quiet Active Galactic Nuclei [PDF]
, 2006 This article presents XMM-Newton observations of two luminous and high accretion rate radio-quiet active galactic nuclei at z ...
Brandt, William Nielsen +4 more
core +1 more source
Mapping Immunity With Cutting‐Edge Spatial Biology and Tissue Cytometry Innovations
MedComm, Volume 7, Issue 6, June 2026.This review explores how spatial biology integrates multiplexed imaging and tissue cytometry to reveal immune organization within native tissue contexts. ABSTRACT The immune system operates within organized tissue landscapes, where spatial relationships between cells shape the nature and outcome of immune responses.
Lilibeth Cárdenas‐Piedra +5 more
wiley +1 more source