no code implementations • 16 Oct 2021 • Claudio Gheller, Franco Vazza
We apply a Machine Learning technique known as Convolutional Denoising Autoencoder to denoise synthetic images of state-of-the-art radio telescopes, with the goal of detecting the faint, diffused radio sources predicted to characterise the radio cosmic web.
no code implementations • 11 Mar 2021 • Torrance Hodgson, Iacopo Bartalucci, Melanie Johnston-Hollitt, Benjamin McKinley, Franco Vazza, Denis Wittor
We report on the discovery of a mysterious ultra-steep spectrum (USS) synchrotron source in the galaxy cluster Abell 2877.
Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics
no code implementations • 2 Mar 2021 • Serena Banfi, Franco Vazza, Claudio Gheller
The continuous flow of gas and dark matter across scales in the cosmic web can generate correlated dynamical properties of haloes and filaments (and the magnetic fields they contain).
Cosmology and Nongalactic Astrophysics
no code implementations • 5 Jun 2020 • George Heald, Sui Ann Mao, Valentina Vacca, Takuya Akahori, Ancor Damas-Segovia, B. M. Gaensler, Matthias Hoeft, Ivan Agudo, Aritra Basu, Rainer Beck, Mark Birkinshaw, Annalisa Bonafede, Tyler L. Bourke, Andrea Bracco, Ettore Carretti, Luigina Feretti, J. M. Girart, Federica Govoni, James A. Green, JinLin Han, Marijke Haverkorn, Cathy Horellou, Melanie Johnston-Hollitt, Roland Kothes, Tom Landecker, Blazej Nikiel-Wroczynski, Shane P. O'Sullivan, Marco Padovani, Frederick Poidevin, Luke Pratley, Marco Regis, Christopher John Riseley, Tim Robishaw, Lawrence Rudnick, Charlotte Sobey, Jeroen M. Stil, Xiaohui Sun, Sharanya Sur, A. Russ Taylor, Alec Thomson, Cameron L. Van Eck, Franco Vazza, Jennifer L. West, the SKA Magnetism Science Working Group
The Square Kilometre Array (SKA) will answer fundamental questions about the origin, evolution, properties, and influence of magnetic fields throughout the Universe.
Astrophysics of Galaxies Instrumentation and Methods for Astrophysics
no code implementations • 22 Apr 2020 • Nicola T. Locatelli, Kamlesh Rajpurohit, Franco Vazza, Fabio Gastaldello, Daniele Dallacasa, Annalisa Bonafede, Mariachiara Rossetti, Chiara Stuardi, Etienne Bonassieux, Gianfranco Brunetti, Marcus Brüggen, Timothy Shimwell
The case of acceleration is challenged by the low predicted efficiency of low-Mach number merger shocks, unable to explain the power observed in most radio relics.
High Energy Astrophysical Phenomena Cosmology and Nongalactic Astrophysics