Results 141 to 150 of about 53,302 (262)

Spoon-feeding an active galactic nucleus [PDF]

open access: yesProceedings of Swift: 10 Years of Discovery — PoS(SWIFT 10), 2015
Steven E. Campana   +6 more
openaire   +2 more sources

Optically Thick Jet Base and Explanation of Edge Brightening in Active Galactic Nucleus Jets

open access: yesThe Astrophysical Journal
The jet cores in active galactic nuclei (AGNs) are resolved and found to harbor an edge-brightened structure where the jet base appears extended at the sides compared to its propagation axis. This peculiar phenomenon invites various explanations. We show
Mukesh Kumar Vyas, Asaf Pe’er
doaj   +1 more source

Preemptive iodide treatment in the event of a nuclear disaster: The prepper's guide to the galaxy

open access: yes
Experimental Physiology, EarlyView.
Per Karkov Cramon   +2 more
wiley   +1 more source

A New Framework for Active Galactic Nucleus Accretion and Jet Feedback in Numerical Simulations

open access: yesThe Astrophysical Journal Supplement Series
Accurate modeling of active galactic nucleus (AGN) feedback, especially due to relativistic jets, is crucial for understanding the cool-core problem in galaxy clusters.
Ying-He Celeste Lü, Paul M. Ricker
doaj   +1 more source

Probing the High-frequency Variability of NGC 5044: The Key to Active Galactic Nucleus Feedback

open access: yesThe Astrophysical Journal
The 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

Iron K Line Variability in the Low-Luminosity Active Galactic Nucleus NGC 4579 [PDF]

open access: bronze, 2000
Yuichi Terashima   +6 more
openalex   +1 more source

Microlensing and the structure of active galactic nucleus accretion disks

open access: yesThe Astrophysical Journal, 1991
Rapid variability has been reported in two of the four gravitationally lensed images of Q2237 + 0305, and this is attributed to microlensing caused by the intervening stars. The associated constraints on the source size and properties are studied and compared with a variety of stationary accretion disk models.
Roger Blandford, Kevin P. Rauch
openaire   +2 more sources

A Rapidly Accreting Active Galactic Nucleus Hidden in a Dust-obscured Galaxy at z ∼ 0.8

open access: yesThe Astrophysical Journal
Dust-obscured galaxies (DOGs) containing central supermassive black holes (SMBHs) that are rapidly accreting (i.e., having high Eddington ratios, λ _Edd ) may represent a key phase closest to the peak of both the black hole and galaxy growth in the ...
Nathan Cristello   +5 more
doaj   +1 more source

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