Results 121 to 130 of about 23,272 (235)
BASS. XLVII. 22 GHz Radio Atlas of Swift-BAT Selected AGN
The Astrophysical JournalWe present the third phase of the largest high-frequency, high-resolution imaging survey of 231 nearby, hard X-ray selected active galactic nuclei (AGNs), with a very high 98% ± 1% detection fraction.
Macon Magno +18 more
doaj +1 more source
Revisiting the Unified Model of Active Galactic Nuclei [PDF]
, 2015 This review describes recent developments related to the unified model of active galactic nuclei (AGNs). It focuses on new ideas about the origin and properties of the central obscurer (torus) and the connection to its surroundings.
H. Netzer
semanticscholar +1 more source
Active Nematics Reinforce the Ratchet Flow in Dense Environments Without Jamming
Advanced Science, Volume 12, Issue 11, March 20, 2025.This study demonstrates enhanced directional migration of neural progenitor cells in micro‐fabricated ratchet geometry, taking advantage of active collective motions. Jamming is eased by cells' spontaneous back‐and‐forth motion as active nematics, answering the long‐standing puzzle of how cells navigate crowded environments over long distances.
Yisong Yao +5 more
wiley +1 more source
Prevalence of Compact Nuclear Radio Emission in Post-merger Galaxies and Its Origin
The Astrophysical JournalPost-merger galaxies are unique laboratories to study the triggering and interplay of star formation and active galactic nucleus (AGN) activity. Combining new, high-resolution Jansky Very Large Array (VLA) observations with archival radio surveys, we ...
Gregory Walsh, Sarah Burke-Spolaor
doaj +1 more source
Antiferroelectric Order in Nematic Liquids: Flexoelectricity Versus Electrostatics
Advanced Science, Volume 12, Issue 9, March 6, 2025.This study examines the competing roles of flexoelectric and electrostatic effects in governing the formation and structure of antiferroelectric nematic liquids. By adjusting the local electric field, the interplay between these mechanisms is analyzed, revealing that flexoelectric coupling is the primary mechanism for the emergence of antiferroelectric
Peter Medle Rupnik +7 more
wiley +1 more source
Recognizing Blazars Using Radio Morphology from the VLA Sky Survey
The Astrophysical JournalBlazars are radio-loud active galactic nuclei whose jets have a very small angle to our line of sight. Observationally, the radio emissions are mostly compact or compact-core with a one-sided jet.
Zhang-Liang Xie +6 more
doaj +1 more source
The Astrophysical Journal Supplement SeriesWe conducted an extensive identification and analysis of various morphological classes and subclasses of radio galaxies using the latest high-resolution data from the second data release of the LOFAR Two-metre Sky Survey.
Soumen Kumar Bera +5 more
doaj +1 more source
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.
J. Tueller +5 more
openaire +3 more sources
VaDAR: Varstrometry for Dual AGN Using Radio Interferometry
The Astrophysical JournalBinary and dual active galactic nuclei (AGNs) are an important observational tool for studying the formation and dynamical evolution of galaxies and supermassive black holes.
Emma Schwartzman +7 more
doaj +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