Results 51 to 60 of about 1,302 (205)
Retrograde infall of the intergalactic gas onto S-galaxy and activity of galactic nuclei
Open AstronomyWe present the results of numerical simulations focused on the accretion of intergalactic gas onto a gas-rich S-type disc galaxy. Our investigation explores the conditions favouring the emergence of counterrotating stellar and gaseous components within ...
Khrapov Sergey S. +1 more
doaj +1 more source
Warm absorber outflows in radio-loud active galactic nucleus 3C 59
Astronomy & AstrophysicsContext. Both jets and ionized outflows in active galactic nuclei (AGNs) are thought to play important roles in affecting the star formation and evolution of host galaxies, but their relationship is still unclear. Aims.
Wang Yijun +10 more
doaj +1 more source
UNDERSTANDING DUAL ACTIVE GALACTIC NUCLEUS ACTIVATION IN THE NEARBY UNIVERSE [PDF]
The Astrophysical Journal, 2012 We study the fraction of dual active galactic nuclei (AGNs) in a sample of 167 nearby (z < 0.05), moderate-luminosity, ultra-hard X-ray-selected AGNs from the all-sky Swift Burst Alert Telescope (BAT) survey. Combining new Chandra and Gemini observations together with optical and X-ray observations, we find that the dual AGN frequency at scales
Koss, M. +5 more
openaire +2 more sources
Ultrafast Transitions in X‐Ray Irradiated Solids
Contributions to Plasma Physics, EarlyView.ABSTRACT In this review, we present current developments on modeling ultrafast transitions in solids triggered by intense, atto‐ to femtosecond pulses from X‐ray free electron lasers. This specific irradiation regime requires dedicated simulation tools based on theoretical and computational methods, involving the elements of classical and quantum ...
Sebastião Antunes +3 more
wiley +1 more source
The Astrophysical JournalIn this work, we aim to further populate the low-mass regime of black hole (BH) scaling relations to better understand the formation and growth mechanisms of central supermassive BHs. We target six galaxies that have been previously identified as hosting
Megan R. Sturm +3 more
doaj +1 more source
Astronomy & AstrophysicsLong-standing optical quasi-periodic oscillations (QPOs) with periodicities of hundreds to thousands of days have been accepted as indicators of central sub-parsec binary black hole systems in broad line active galactic nuclei (BLAGNs).
Liao GuiLin +3 more
doaj +1 more source
Modeling the Spectral Energy Distribution of the Active Galactic Nucleus inside NGC 4395
The Astrophysical Journal, 2023 We study the broadband spectral energy distribution (SED) of the prototypical low-mass active galactic nucleus (AGN) in NGC 4395. We jointly model the optical through mid-IR SED with a combination of galaxy and AGN light, and find that on arcsecond ...
Hector Afonso G. Cruz +2 more
doaj +1 more source
Active galactic nucleus outflows in galaxy discs [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 22 pages, 22 figures, published in ...
Hartwig, Tilman +2 more
openaire +3 more sources
Developmental Dynamics, EarlyView.Abstract Understanding the dynamic nature of developmental networks requires live imaging techniques capable of capturing real‐time developmental processes in wild‐type and mutant embryos as they are exposed to pharmacological perturbations. A peculiar developmental patterning process in early vertebrate embryos is the sequential segmentation of ...
Mohammed Nakhuda, M. Fethullah Simsek
wiley +1 more source
The major merger–active galactic nucleus connection up to cosmic noon
Astronomy & AstrophysicsGalaxy major mergers are a potential mechanism for triggering active galactic nuclei (AGN) activity, but their role remains debated, particularly beyond the local Universe.
La Marca A. +5 more
doaj +1 more source