Results 41 to 50 of about 5,405 (233)

The Photometric and Spectroscopic Properties of Remnant and Restarted Radio Galaxies in the Lockman Hole Field

open access: yesGalaxies, 2021
Radio galaxies are known to undergo phases of activity, where the stage after the jets have switched off is referred to as the remnant phase. This state can be followed by a restarted phase when the activity reignites. Remnant and restarted radio sources
Nika Jurlin   +3 more
doaj   +1 more source

Bronchoscopy Robot with Enhanced Flexibility and Stability via Multi‐Segment Variable Stiffness Catheter

open access: yesAdvanced Intelligent Systems, EarlyView.
This work presents a magnetic bronchoscopy robot with a novel multi‐segment variable stiffness catheter. This catheter can not only move flexibly in the narrow bronchi but also harden according to the need to provide support. Combined with remote wireless magnetic field drive, it provides a more precise and effective solution for biopsy of deep lung ...
Shucong Yin   +10 more
wiley   +1 more source

The Microjansky Radio Galaxy Population [PDF]

open access: yesThe Astrophysical Journal, 2007
20 pages, Accepted by The Astrophysical Journal (scheduled for 1 Jan 2007), color figures 2 and 3 can be found at http://www.astro.wisc.edu/~barger/radiopaper ...
Barger, A. J.   +2 more
openaire   +2 more sources

Starbursts and black hole masses in X-shaped radio galaxies: Signatures of a merger event? [PDF]

open access: yes, 2012
We present new spectroscopic identifications of 12 X-shaped radio galaxies and use the spectral data to derive starburst histories and masses of the nuclear supermassive black holes in these galaxies.
Vahram Chavushyan
core  

Molecular disks in radio galaxies

open access: yes, 2010
Context. It has recently been proposed that the jets of low-luminosity radio galaxies are powered by direct accretion of the hot phase of the IGM onto the central black hole. Cold gas remains a plausible alternative fuel supply, however.
H. R. de Ruiter   +3 more
core   +1 more source

Probing the Impact of Radio-mode Feedback on the Properties of the Cool Circumgalactic Medium

open access: yesThe Astrophysical Journal
We explore the influence of radio-mode feedback on the properties of the cool circumgalactic medium (CGM). To this end, we assemble a statistical sample of approximately 30,000 radio galaxies with background quasars by combining optical spectroscopic ...
Yu-Ling Chang   +35 more
doaj   +1 more source

Radio emission in star-forming galaxies: connection to restarted or relic AGN activity

open access: yesAstronomy & Astrophysics
Increasing evidence shows that active galactic nuclei (AGNs) with radio detections have more perturbed ionized gas kinematics and higher outflow detection rates, suggesting a link between radio emission and these processes.
Albán M.   +4 more
doaj   +1 more source

Switchable Privacy Displays: Applications, Optical Measurements, and Evaluation With Focus on Automotive

open access: yesJournal of the Society for Information Display, EarlyView.
Switchable‐privacy displays can be used to protect sensitive data in public spaces and to avoid driver distraction on codriver displays. The key optical parameters are the luminance in public and privacy modes, measured over the viewing angle, and the image quality for the intended observers.
Karlheinz Blankenbach
wiley   +1 more source

X-shaped radio galaxies and the nanohertz gravitational wave background

open access: yes, 2015
Coalescence of Supermassive Black Holes (SMBHs) in galaxy mergers is potentially the dominant contributor to the low frequency Gravitational Wave Background (GWB).
Roberts, David H.   +2 more
core   +1 more source

Germanium‐Based Mid‐Infrared Integrated Photonics

open access: yesLaser &Photonics Reviews, EarlyView.
The mid‐infrared (mid‐IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Photonics integration in this wavelength range have thus seen a burst of interest in the recent years, mainly driven by applications related with the detection of chemical and biological ...
Delphine Marris‐Morini   +6 more
wiley   +1 more source

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