Results 91 to 100 of about 40,224 (203)
Earth and Space Science, Volume 13, Issue 5, May 2026.Abstract Sediments on Arctic continental shelves are impacted by sea ice and ice‐related processes for up to 9 months per year. As a result, seabed morphology in cold regions can exhibit features such as ice scours which are absent on lower‐latitude shelves.
E. F. Eidam +7 more
wiley +1 more source
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
Revealing two radio active galactic nuclei extremely near PSR J0437$-$4715
, 2018 Newton's gravitational constant $G$ may vary with time at an extremely low level. The time variability of $G$ will affect the orbital motion of a millisecond pulsar in a binary system and cause a tiny difference between the orbital period-dependent ...
An, Tao +11 more
core +1 more source
Compact Radio Sources, Quasars and Active Galactic Nuclei [PDF]
Australian Journal of Physics, 1994 This paper reviews John G. Bolton's contributions to our understanding of compact radio sources associated with quasars and active galactic nuclei (AGNs), and his work leading to the discovery of quasars. Particular attention is given to the interpretation of the observed properties of quasars and AGNs within the framework of unified models which ...
openaire +1 more source
Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics
Advanced Functional Materials, Volume 36, Issue 27, 2 April 2026.Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha +18 more
wiley +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
How relevant is the torus activity/geometry for the TeV gamma-rays emitted in the jet of M87 ? [PDF]
, 2003 Motivated by unification schemes of active galactic nuclei, we review evidence for the existence of a small-scale dust torus in M87, a Fanaroff-Riley Class I radio galaxy.
Donea, A. -C., Protheroe, R. J.
core +1 more source
A hunt for dual radio active galactic nuclei in the VLASS
, 2014 5 pages, 4 figures, submitted as a whitepaper to the NRAO VLASS call: https://science.nrao.edu/science/surveys ...
Burke-Spolaor, Sarah +7 more
openaire +2 more sources
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
Midbrain PAG Astrocytes Modulate Mouse Defensive and Panic‐Like Behaviors
Advanced Science, Volume 13, Issue 19, 2 April 2026.Astrocytes in the midbrain periaqueductal gray (PAG) dynamically encode threat intensity and shape defensive action selection in mice. Real‐time Ca2+ imaging reveals robust astrocytic activation during predator odor and CO2 exposure. Aberrant astrocytic Ca2+ overactivation disrupts goal‐directed escape, biases behavior toward freezing, and induces ...
Ellane Barcelon +10 more
wiley +1 more source