no code implementations • 17 Feb 2021 • Gabriel Chardin, Yohan Dubois, Giovanni Manfredi, Bruce Miller, Clément Stahl
We also show that the Dirac-Milne universe, featuring a polarization between its matter and antimatter components, presents a behavior similar to that of MOND (Modified Newtonian Dynamics), characterized by an additional surface gravity compared to the Newtonian case.
Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics
no code implementations • 9 Feb 2021 • Skanda Koppula, Victor Bapst, Marc Huertas-Company, Sam Blackwell, Agnieszka Grabska-Barwinska, Sander Dieleman, Andrea Huber, Natasha Antropova, Mikolaj Binkowski, Hannah Openshaw, Adria Recasens, Fernando Caro, Avishai Deke, Yohan Dubois, Jesus Vega Ferrero, David C. Koo, Joel R. Primack, Trevor Back
Fine-grained estimation of galaxy merger stages from observations is a key problem useful for validation of our current theoretical understanding of galaxy formation.
no code implementations • 4 Jan 2021 • Marius Ramsøy, Adrianne Slyz, Julien Devriendt, Clotilde Laigle, Yohan Dubois
At high redshift, the cosmic web is widely expected to have a significant impact on the morphologies, dynamics and star formation rates of the galaxies embedded within it, underscoring the need for a comprehensive study of the properties of such a filamentary network.
Astrophysics of Galaxies
no code implementations • 25 Jan 2018 • Nora Elisa Chisari, Mark L. A. Richardson, Julien Devriendt, Yohan Dubois, Aurel Schneider, Amandine M. C. Le Brun, Ricarda S. Beckmann, Sebastien Peirani, Adrianne Slyz, Christophe Pichon
Correspondingly, our results suggest that AGN feedback is not strong enough in the simulation.
Cosmology and Nongalactic Astrophysics
no code implementations • 5 Feb 2014 • Yohan Dubois, Christophe Pichon, Charlotte Welker, Damien Le Borgne, Julien Devriendt, Clotilde Laigle, Sandrine Codis, Dmitry Pogosyan, Stéphane Arnouts, Karim Benabed, Emmanuel Bertin, Jeremy Blaizot, François Bouchet, Jean-François Cardoso, Stéphane Colombi, Valérie de Lapparent, Vincent Desjacques, Raphaël Gavazzi, Susan Kassin, Taysun Kimm, Henry McCracken, Bruno Milliard, Sébastien Peirani, Simon Prunet, Stéphane Rouberol, Joseph Silk, Adrianne Slyz, Thierry Sousbie, Romain Teyssier, Laurence Tresse, Marie Treyer, Didier Vibert, Marta Volonteri
A large-scale hydrodynamical cosmological simulation, Horizon-AGN, is used to investigate the alignment between the spin of galaxies and the cosmic filaments above redshift 1. 2.
Cosmology and Nongalactic Astrophysics