Results 81 to 90 of about 2,777 (189)

The Centre of Attention: A Powerful Radio Galaxy Pinpoints a Near-infrared-dark Protocluster at z ∼ 3.9

open access: yesThe Astrophysical Journal
We report the discovery of a z ∼ 3.9 protocluster identified from Atacama Large Millimeter/submillimeter Array Band 3 spectral scans of a bright radio source selected from the Galactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey ...
A. J. Hedge   +10 more
doaj   +1 more source

Photoresponsive MoS2‐Based Artificial Synaptic Transistor for Wavelength‐Dependent Physical Reservoir Computing

open access: yesSmall Structures, Volume 7, Issue 8, August 2026.
The illumination wavelength sets the relaxation timescale of persistent photoconductivity in a back‐gated MoS2 photonic synapse. Red, green, and blue light supply three distinct fading‐memory channels within a single device. Combining these spectral channels into one reservoir achieves best performance of a nonlinear time‐series prediction below that ...
Mingeun Park   +7 more
wiley   +1 more source

The Shocking Features in the Closest Rich Galaxy Cluster Norma

open access: yesThe Astrophysical Journal
The merger shocks generated by the collision of galaxy clusters elevate the pressure within the intracluster medium, significantly influencing the evolution of embedded cluster galaxies.
Chong Ge   +4 more
doaj   +1 more source

Driver behind the bimodal distribution of Eddington-scaled radio luminosity in nearby early-type galaxies

open access: yesAstronomy & Astrophysics
Context. Early-type galaxies host low-luminosity active galactic nuclei, as indicated by radio emission spanning up to several orders of magnitude in terms of the physical scale, ranging from compact parsec-scale to extended kiloparsec-scale radio ...
Wójtowicz A.   +3 more
doaj   +1 more source

Statistical Survey of Cosmic Noise Absorption in Conjunction With Plasma Wave Measurements

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Using a decade of observations from the Canadian Geospace Observatory Riometer Network (GO‐RIO), we selected an east‐west subset of stations near L∼7 $L\sim 7$ to classify cosmic noise absorption (CNA) (a proxy for enhanced D‐region ionization) into two morphologies, simultaneous and drifting, based on the relative timing of signals across the
R. Ghaffari   +3 more
wiley   +1 more source

Radio Diagnostics Of Galaxy Interactions [PDF]

open access: yesSymposium - International Astronomical Union, 1999
The Hickson Compact Groups (Hickson 1982) are relatively isolated systems of galaxies with projected separations comparable to the diameters of the galaxies themselves and are an ideal laboratory for the study of the effects of interactions on the various properties of galaxies.
openaire   +1 more source

Identification of 4876 Bent-tail Radio Galaxies in the FIRST Survey Using Deep Learning Combined with Visual Inspection

open access: yesThe Astrophysical Journal Supplement Series
Bent-tail radio galaxies (BTRGs) are characterized by bent radio lobes. This unique shape is mainly caused by the movement of the galaxy within a cluster, during which the radio jets are deflected by the intracluster medium.
Baoqiang Lao   +8 more
doaj   +1 more source

The physiology of survival: Space

open access: yes
Experimental Physiology, EarlyView.
Damian M. Bailey, Angelique van Ombergen
wiley   +1 more source

Low Frequency Extensions of Cyclotron Maser Instability‐Generated Radio Emission: A Statistical View From Cassini at Saturn

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The Cassini spacecraft spent 13 years orbiting Saturn, quasi‐continuously measuring Saturn's radio emissions. One of the key elements of the radio spectrum at Saturn is the Saturn Kilometric Radiation (SKR), and several studies have been written on events called Low Frequency Extensions (LFEs) which represent strong, continuous extensions of ...
C. M. Jackman   +11 more
wiley   +1 more source

Jet–ISM Interaction and Multichannel Active Galactic Nucleus Feedback in the Postmerger Galaxy 4C+29.30

open access: yesThe Astrophysical Journal
4C+29.30 is a postmerger galaxy hosting a rejuvenated active galactic nucleus (AGN) with a complex multiscale radio morphology, making it an ideal laboratory to study the interplay between different AGN feedback modes.
Xiao Cao   +7 more
doaj   +1 more source

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