Results 111 to 120 of about 112,522 (249)

The Quasar Feedback Survey: revealing the interplay of jets, winds, and emission-line gas in type 2 quasars with radio polarization [PDF]

open access: green, 2022
S. Silpa   +6 more
openalex   +1 more source

Effect of MgO and Al2O3 precursors on 3D‐printed cordierite lattice structures by a novel emulsion‐based PDC route

open access: yesJournal of the American Ceramic Society, Volume 108, Issue 12, December 2025.
Development of cordierite lattice structures from DIW of silicone‐based emulsions, in multiple forms (aqueous phase as suspension of oxide nanoparticles, as solution of Mg and Al salts, or as solution/suspension). Abstract The development of advanced ceramic materials with tailored microstructures is essential for meeting the demands of many high ...
Valeria Diamanti   +3 more
wiley   +1 more source

Quasar-galaxy and AGN-galaxy cross-correlations [PDF]

open access: yes, 1998
We compute quasar-galaxy and AGN-galaxy cross-correlation functions for samples taken from the \cite{VCV98} catalog of quasars and active galaxies, using tracer galaxies taken from the Edinburgh/Durham Southern Catalog.
Babul A.   +9 more
core   +3 more sources

Implications of z ∼ 6 Quasar Proximity Zones for the Epoch of Reionization and Quasar Lifetimes [PDF]

open access: yes, 2017
We study quasar proximity zones in the redshift range 5.77 ≤ z ≤ 6.54 by homogeneously analyzing 34 medium-resolution spectra, encompassing both archival and newly obtained data, and exploiting recently updated systemic redshift and magnitude ...
A. Eilers   +9 more
semanticscholar   +1 more source

Performance evaluation of a second‐generation O‐ring‐shaped image‐guided radiotherapy system with a gimbal‐mounted linear accelerator and real‐time tracking capabilities

open access: yesJournal of Applied Clinical Medical Physics, Volume 26, Issue 11, November 2025.
Abstract Purpose OXRAY, a state‐of‐the‐art radiation therapy system commercialized by Hitachi High‐Tech Ltd. in 2023, integrates unique beam delivery and image‐guided radiation therapy (IGRT) technologies as the successor to Vero4DRT. This study evaluated the performance of this second‐generation O‐ring‐shaped linear accelerator. Methods The percentage
Kohei Kawata   +8 more
wiley   +1 more source

Calibrating the Galaxy Halo - Black Hole Relation Based on the Clustering of Quasars

open access: yes, 2004
The observed number counts of quasars may be explained either by long-lived activity within rare massive hosts, or by short-lived activity within smaller, more common hosts.
Abraham Loeb   +4 more
core   +1 more source

A flux-ratio anomaly in the CO spectral line emission from gravitationally-lensed quasar MG J0414+0534 [PDF]

open access: yes, 2018
We present an analysis of archival observations with the Atacama Large (sub-)Millimetre Array (ALMA) of the gravitationally lensed quasar MG J0414+0534, which show four compact images of the quasar and an Einstein ring from the dust associated with the ...
McKean, J. P., Stacey, H. R.
core   +3 more sources

Quasar-mode Feedback in Nearby Type 1 Quasars: Ubiquitous Kiloparsec-scale Outflows and Correlations with Black Hole Properties [PDF]

open access: yes, 2017
The prevalence and properties of kiloparsec-scale outflows in nearby Type 1 quasars have been the subject of little previous attention. This work presents Gemini integral field spectroscopy of 10 Type 1 radio-quiet quasars at .
D. Rupke, K. Gültekin, S. Veilleux
semanticscholar   +1 more source

Modeling quasar variability through self-organizing map-based neural process [PDF]

open access: yesSerbian Astronomical Journal
Conditional Neural Process (QNPy) has shown to be a good tool for modeling quasar light curves. However, given the complex nature of the source and hence the data represented by light curves, processing could be time-consuming.
Čvorović-Hajdinjak I.
doaj   +1 more source

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