Results 21 to 30 of about 1,250,626 (333)
Discovery of a radio galaxy at z = 5.72 [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We report the discovery of the most distant radio galaxy to date, TGSS1530 at a redshift of $z=5.72$ close to the presumed end of the Epoch of Reionisation.
A. Saxena +13 more
semanticscholar +1 more source
EESSI: A cross‐platform ready‐to‐use optimised scientific software stack
Software: Practice and Experience, Volume 53, Issue 1, Page 176-210, January 2023., 2023 Abstract Getting scientific software installed correctly and ensuring it performs well has been a ubiquitous problem for several decades now, which is compounded currently by the changing landscape of computational science with the (re‐)emergence of different microprocessor families, and the expansion to additional scientific domains like artificial ...
Bob Dröge +5 more
wiley +1 more source
Radio Galaxy Zoo: compact and extended radio source classification with deep learning [PDF]
, 2018 Machine learning techniques have been increasingly useful in astronomical applications over the last few years, for example in the morphological classification of galaxies.
Vojislav Lukic +6 more
semanticscholar +1 more source
Transfer learning for radio galaxy classification [PDF]
, 2019 In the context of radio galaxy classification, most state-of-the-art neural network algorithms have been focused on single survey data. The question of whether these trained algorithms have cross-survey identification ability or can be adapted to develop
Hongming Tang, A. Scaife, J. Leahy
semanticscholar +1 more source
Duty cycle of the radio galaxy B2 0258+35 [PDF]
Astronomy & Astrophysics, 2018 Context. Radio loud active galactic nuclei (AGN) are episodic in nature, cycling through periods of activity and quiescence. The study of this duty cycle has recently gained new relevance because of the importance of AGN feedback for galaxy evolution ...
M. Brienza +16 more
semanticscholar +1 more source
RADIO DETECTION OF RADIO-QUIET GALAXIES [PDF]
The Astronomical Journal, 2008 We investigate the radio emission of ~185,000 quiescent (optically unclassifiable) galaxies selected from the Sloan Digital Sky Survey (SDSS). By median-stacking FIRST cutouts centered on the optically-selected sources, we are able to reach flux densities down to the 10s of microJy.
W. H. de Vries +5 more
openaire +4 more sources
Powerful Yet Lonely: Is 3C 297 a High-redshift Fossil Group?
The Astrophysical Journal Supplement Series, 2022 The environment of the high-redshift ( z = 1.408), powerful radio-loud galaxy 3C 297 has several distinctive features of a galaxy cluster. Among them, a characteristic halo of hot gas revealed by Chandra X-ray observations.
Valentina Missaglia +10 more
doaj +1 more source
Particle content, radio-galaxy morphology and jet power : all radio-loud AGN are not equal [PDF]
, 2018 Ongoing and future radio surveys aim to trace the evolution of black hole growth and feedback from active galactic nuclei (AGN) throughout cosmic time; however, there remain major uncertainties in translating radio luminosity functions into a reliable ...
J. Croston, J. Ineson, M. Hardcastle
semanticscholar +1 more source
IET Renewable Power Generation, EarlyView., 2023 Optimization of proposed micro grid system is done using physics based meta heuristic methods. A grid connected micro grid consist of solar PV system, wind turbine (WT), micro gas turbine (MT), fuel cell (FC) and battery energy storage system (BESS).
Jayati Vaish +2 more
wiley +1 more source
On the environments of giant radio galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We test the hypothesis that environments play a key role in enabling the growth of enormous radio structures spanning more than 700 kpc, an extreme population of radio galaxies called giant radio galaxies (GRGs). To achieve this, we explore (1) the relationships between the occurrence of GRGs and the surface number density of ...
Ting-Wen Lan 藍鼎文 +2 more
openaire +3 more sources