Results 101 to 110 of about 47,541 (242)
Detection of a ∼0.1c Radio Knot in M81* Associated with a Moderate X-Ray Flare
The Astrophysical Journal, 2023 Through very long baseline interferometry observations of one of the closest low-luminosity active galactic nuclei, M81*, at multiple frequencies of 8.8, 22, and 44 GHz, a bright discrete knot with an unusual low apparent speed ∼0.1 c was detected ...
Xuezheng Wang +6 more
doaj +1 more source
On the relative Contribution of high-redshift Galaxies and Active Galactic Nuclei to Reionization
, 2012 In this paper we discuss the contribution of different astrophysical sources to the ionization of neutral hydrogen at different redshifts. We critically revise the arguments in favour/against a substantial contribution of Active Galactic Nuclei (AGNs ...
Becker +67 more
core +1 more source
Advanced Materials, Volume 38, Issue 1, 2 January 2026.This study reveals an atomic‐level correlation between bulk dislocations and the exsolution of surface nanoparticles through a novel approach for dislocation engineering in epitaxial thin films. Employing in situ scanning transmission electron microscopy, two primary reasons for the frequent nucleation of dislocation‐associated nanoparticles are ...
Moritz Lukas Weber +8 more
wiley +1 more source
Probing the High-frequency Variability of NGC 5044: The Key to Active Galactic Nucleus Feedback
The Astrophysical JournalThe active galactic nucleus (AGN) feeding and feedback process in the centers of galaxy clusters and groups is still not well understood. NGC 5044 is the ideal system in which to study AGN feedback. It hosts the largest known reservoir of cold gas in any
Gerrit Schellenberger +12 more
doaj +1 more source
On the Subparsec-scale Core Composition of FR 0 Radio Galaxies
The Astrophysical Journal Letters, 2023 Although Fanaroff–Riley type 0 (FR 0) radio galaxies are known to be the most numerous jet population in the local Universe, they are much less explored than the well-established class of FR type I (FR I) and FR type II galaxies due to their intrinsic ...
Margot Boughelilba, Anita Reimer
doaj +1 more source
The Many Routes to AGN Feedback [PDF]
, 2017 The energy released by Active Galactic Nuclei (AGN) in the form of radiation, winds, or radio plasma jets, is known to impact on the surrounding interstellar medium. The result of these processes, known as AGN (negative) feedback, is suggested to prevent
Morganti, Raffaella
core +2 more sources
HST/WFPC2 IMAGING OF THE CIRCUMNUCLEAR STRUCTURE OF LOW-LUMINOSITY ACTIVE GALACTIC NUCLEI. I. DATA AND NUCLEAR MORPHOLOGY [PDF]
, 2007 In several studies of low-luminosity active galactic nuclei (LLAGNs), we have characterized the properties of the stellar populations in LINERs and LINER/H ii transition objects (TOs).
R. G. Delgado +3 more
semanticscholar +1 more source
Advanced Science, Volume 13, Issue 2, 9 January 2026.The advent of aptamers has highlighted their potential as alternatives to antibodies, overcoming limitations of structural instability and production cost. However, conventional approaches such as SELEX remain slow and labor‐intensive. This review examines recent advances in aptamer engineering, emphasizing in vitro and AI‐driven in silico strategies ...
John V. L. Nguyen +5 more
wiley +1 more source
The Astrophysical JournalFeedback from black-hole-powered jets has been invoked in many cosmological simulations to regulate star formation and quench galaxies. Despite this, observational evidence of how jets might be able to affect their hosts remains scarce, especially for ...
Olga Borodina +8 more
doaj +1 more source
Testing black hole jet scaling relations in low-luminosity active galactic nuclei [PDF]
, 2011 We present the results of the analysis of a sample of 17 low-luminosity (LX 10 42 erg s −1 ), radio-loud active galactic nuclei in massive galaxies. The sample is extracted from the Sloan Digital Sky Survey data base and it spans uniformly a wide range ...
F. Gasperin +5 more
semanticscholar +1 more source