Results 71 to 80 of about 6,292 (222)

You Shall Not Pass! The Propagation of Low-/Moderate-powered Jets Through a Turbulent Interstellar Medium

open access: yesThe Astrophysical Journal
Feedback 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

Surprisingly Strong K-band Emission Found in Low-luminosity Active Galactic Nuclei [PDF]

open access: yesThe Astrophysical Journal, 2019
Abstract We examine the near-infrared (NIR) emission from low-luminosity active galactic nuclei (LLAGNs). Our galaxy sample includes 15 objects with detected 2–10 keV X-ray emission, dynamical black hole mass estimates from the literature, and available Gemini/NIFS integral field spectroscopy data.
Antoine Dumont   +5 more
openaire   +3 more sources

Third Generation Genome Sequencing of the Endobacterium Corynebacterium kroppenstedtii subsp. demodicis Reveals Details of Its Microbe‐Host‐Interaction With the Most Complex Human Commensal, Demodex folliculorum

open access: yesEnvironmental Microbiology Reports, Volume 18, Issue 3, June 2026.
The symbiotic interaction between Demodex folliculorum and Corynebacterium kroppenstedtii subsp. demodicis. Created by the author based on genomic and functional analyses presented in this work. The tripartite interaction between the human host, the mite Demodex folliculorum, and its endosymbiont Corynebacterium kroppenstedtii subsp. demodicis.
T. Steegmüller   +6 more
wiley   +1 more source

Are most low-luminosity active galactic nuclei really obscured?

open access: yes, 2019
At low Eddington ratios ((m)over dot), two effects make it more difficult to detect certain active galactic nuclei (AGN) given a particular set of selection methods.
Hopkins, Philip F.   +3 more
core   +1 more source

Hot, Cold, and Multicomponent Accretion Flows around Supermassive Black Hole Binaries

open access: yesThe Astrophysical Journal
We develop a model for supermassive black hole binaries (SMBHBs) accreting below their Eddington limit, focusing on systems where hot, advection-dominated flows become viable.
Christopher Tiede, Daniel J. D’Orazio
doaj   +1 more source

Ghost in the Shell: Evidence for Past Active Galactic Nucleus Activities in NGC 5195 from a Newly Discovered Large-scale Ionized Structure

open access: yesThe Astrophysical Journal, 2023
The early-type galaxy NGC 5195 (alternatively known as M51b) possesses extended gas features detected in the multiwavelength, postulated to be associated with previous activities of the central supermassive black hole.
Xiaoyu Xu, Junfeng Wang
doaj   +1 more source

Anhydrous minerals in asteroid Bennu: Evidence for well‐preserved primordial components

open access: yesMeteoritics &Planetary Science, Volume 61, Issue 6, Page 963-986, June 2026.
Abstract Aqueously altered carbonaceous astromaterials are dominated by secondary minerals, but a minor fraction of primary, anhydrous silicates and oxides escape alteration, offering insight into the original composition of asteroid parent bodies. We report the mineralogy, petrology, mineral chemistry, and oxygen isotopes of anhydrous minerals—50 ...
S. S. Russell   +23 more
wiley   +1 more source

Using Faded Changing-look Quasars to Unveil the Spectral Energy Distribution Evolution of Low-luminosity Active Galactic Nuclei

open access: yesThe Astrophysical Journal
The structure of accretion flows in low-luminosity active galactic nuclei (AGNs) at low Eddington ratios (∼10 ^−2 –10 ^−3 ) are poorly understood, and can be probed using the spectral energy distributions (SEDs) of faded changing-look (CL) quasars ...
Olivier Gilbert   +9 more
doaj   +1 more source

Detection of a ∼0.1c Radio Knot in M81* Associated with a Moderate X-Ray Flare

open access: yesThe 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

A high-frequency radio survey of low-luminosity active galactic nuclei [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2005
15 pages, 5 figures.
Doi, A.   +4 more
openaire   +2 more sources

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