Results 81 to 90 of about 23,272 (235)

COSMIC EVOLUTION OF RADIO SELECTED ACTIVE GALACTIC NUCLEI IN THE COSMOS FIELD [PDF]

The Astrophysical Journal, 2009
18 pages, 14 figures, to appear in ...
Jonathan R. Trump, Paolo Ciliegi, Marco Scodeggio, Nick Scoville, Andrea Merloni, S. Bardelli, Timothy A. D. Paglione, Timothy A. D. Paglione, Vernesa Smolčić, Anton M. Koekemoer, M. Bondi, Laura Birzan, Laura Birzan, Martin Elvis, Eva Schinnerer, Mara Salvato, G. Zamorani, Chris Carilli, Chris Impey   +18 more
openaire   +5 more sources

RADIO-SELECTED BINARY ACTIVE GALACTIC NUCLEI FROM THE VERY LARGE ARRAY STRIPE 82 SURVEY [PDF]

, 2014
Galaxy mergers play an important role in the growth of galaxies and their supermassive black holes. Simulations suggest that tidal interactions could enhance black hole accretion, which can be tested by the fraction of binary active galactic nuclei (AGNs)
H. Fu, A. Myers, S. Djorgovski, Lin Yan, J. Wrobel, A. Stockton   +5 more
semanticscholar   +1 more source

Impact crater lake evolution and concomitant hydrothermal mineralization recorded by the Wörnitzostheim drill core at the Ries impact structure, Germany

Meteoritics &Planetary Science, Volume 60, Issue 4, Page 795-822, April 2025.
Abstract Impact‐generated hydrothermal systems and postimpact crater lake systems are well‐documented geological phenomena; however, evidence of hydrothermal venting into impact crater lake systems has rarely been reported. We investigated the well‐preserved contact between hydrothermally altered impact melt‐bearing breccia (outer/surficial suevite ...
Matthew J. O. Svensson, Gordon R. Osinski, Fred J. Longstaffe, Timothy A. Goudge, Haley M. Sapers   +4 more
wiley   +1 more source

Discovery of Giant Radio Sources from TGSS Alternative Data Release 1: Radio, Optical, and Infrared Properties

The Astrophysical Journal Supplement Series
Giant radio sources (GRSs) are the single largest astrophysical objects known in the Universe that have grown to megaparsec scales (≥0.7 Mpc). GRSs are much rarer compared with normal-sized radio galaxies.
Netai Bhukta, Souvik Manik, Sabyasachi Pal, Sushanta K. Mondal   +3 more
doaj   +1 more source

Fermi-LAT γ-ray anisotropy and intensity explained by unresolved radio-loud active galactic nuclei [PDF]

, 2014
Radio-loud active galactic nuclei (AGN) are expected to contribute substantially to both the intensity and anisotropy of the isotropic γ-ray background (IGRB).
M. D. Mauro, A. Cuoco, F. Donato, J. Siegal-Gaskins   +3 more
semanticscholar   +1 more source

Update on the German and Australasian Optical Ground Station Networks

International Journal of Satellite Communications and Networking, Volume 43, Issue 3, Page 147-163, May/June 2025.
ABSTRACT Networks of ground stations designed to transmit and receive at visible and infra‐red wavelengths through the atmosphere offer an opportunity to provide on‐demand, high‐bandwidth, secure communications with spacecraft in Earth orbit and beyond. This work describes the operation and activities of current free space optical communications (FSOC)
Nicholas J. Rattenbury, Joseph Ashby, Francis Bennet, Marcus Birch, John E. Cater, Kate Ferguson, Dirk Giggenbach, Ken Grant, Andreas Knopp, Marcus T. Knopp, Ed Kruzins, Andrew Lambert, Kerry Mudge, Catherine Qualtrough, Samuele Raffa, Jonas Rittershofer, Mikhael T. Sayat, Sascha Schediwy, Robert T. Schwarz, Matthew Sellars, Oliver Thearle, Tony Travouillon, Kevin Walker, Shane Walsh, Stephen Weddell   +24 more
wiley   +1 more source

VLBI observations of nearby radio loud active galactic nuclei

Journal of Physics: Conference Series, 2008
6 pages, 7 figures, Proceedings for "The Universe under the Microscope" (AHAR 2008), April 2008, to be published in Journal of Physics: Conference Series by Institute of Physics Publishing; R. Schoedel, A. Eckart, S. Pfalzner, and E.
Marcello Giroletti, Greg B. Taylor, Elisabetta Liuzzo, Elisabetta Liuzzo, Gabriele Giovannini, Gabriele Giovannini   +5 more
openaire   +4 more sources

A Survey of Kiloparsec-Scale Radio Outflows in Radio-Quiet Active Galactic Nuclei [PDF]

The Astronomical Journal, 2006
to appear in the Astronomical Journal, Vol 132 (projected)
Gallimore, Jack F., Axon, David, O'Dea, Christopher P., Baum, Stefi A., Pedlar, Alan   +4 more
openaire   +4 more sources

The Origin and Evolution of Giant Radio Galaxies

Frontiers in Astronomy and Space Sciences, 2022
Giant radio galaxies are arguably the least understood of jetted active galactic nuclei (AGN). We propose that radio galaxies are the product of large mergers that do not involve radio galaxies or radio quasars, such as in merging spiral galaxies, while ...
David Garofalo
doaj   +1 more source

Assessing Clouds in GFDL's AM4.0 With Different Microphysical Parameterizations Using the Satellite Simulator Package COSP

Earth and Space Science, Volume 12, Issue 6, June 2025.
Abstract We evaluate cloud simulations using satellite simulators against multiple observational data sets. These simulators have been run within the Geophysical Fluid Dynamics Laboratory's Atmosphere Model version 4.0 (AM4.0), as well as an alternative configuration where a fully two‐moment Morrison‐Gettelman cloud microphysical parameterization with ...
Huan Guo, Levi G. Silvers, David Paynter, Wenhao Dong, Songmiao Fan, Xianwen Jing, Ryan Kramer, Kristopher Rand, Kentaroh Suzuki, Yuying Zhang, Ming Zhao   +10 more
wiley   +1 more source