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of 122
pro vyhledávání: '"Jones, Bernard J T"'
The observation that accelerated cosmic expansion is dominant since the Mega-parsec cosmic structure became nonlinear seems like an extraordinary coincidence, unless the acceleration is somehow driven by the emergence of the structure. That has given
Externí odkaz:
http://arxiv.org/abs/2409.00024
The observation that accelerated cosmic expansion appears to start around the time that nonlinear cosmic structure is appearing seems like an extraordinary coincidence, unless the acceleration is somehow driven by the emergence of the structure. That
Externí odkaz:
http://arxiv.org/abs/2310.19451
Autor:
Bermejo, Raul, Wilding, Georg, van de Weygaert, Rien, Jones, Bernard J. T., Vegter, Gert, Efstathiou, Konstantinos
We trace the connectivity of the cosmic web as defined by haloes in the Planck-Millennium simulation using a persistence and Betti curve analysis. We normalise clustering up to the second-order correlation function, and use our systematic topological
Externí odkaz:
http://arxiv.org/abs/2206.14655
Autor:
Wilding, Georg, Nevenzeel, Keimpe, van de Weygaert, Rien, Vegter, Gert, Pranav, Pratyush, Jones, Bernard J. T., Efstathiou, Konstantinos, Feldbrugge, Job
Using a set of $\Lambda$CDM simulations of cosmic structure formation, we study the evolving connectivity and changing topological structure of the cosmic web using state-of-the-art tools of multiscale topological data analysis (TDA). We follow the d
Externí odkaz:
http://arxiv.org/abs/2011.12851
Autor:
Pranav, Pratyush, Adler, Robert J., Buchert, Thomas, Edelsbrunner, Herbert, Jones, Bernard J. T., Schwartzman, Armin, Wagner, Hubert, van de Weygaert, Rien
Publikováno v:
A&A 627, A163 (2019)
We study the topology generated by the temperature fluctuations of the Cosmic Microwave Background (CMB) radiation, as quantified by the number of components and holes, formally given by the Betti numbers, in the growing excursion sets. We compare CM
Externí odkaz:
http://arxiv.org/abs/1812.07678
Autor:
Pranav, Pratyush, van de Weygaert, Rien, Vegter, Gert, Jones, Bernard J. T., Adler, Robert J., Feldbrugge, Job, Park, Changbom, Buchert, Thomas, Kerber, Michael
Publikováno v:
MNRAS, Volume 485, 3, 4167-4208 (2019)
This study presents a numerical analysis of the topology of a set of cosmologically interesting three-dimensional Gaussian random fields in terms of their Betti numbers $\beta_0$, $\beta_1$ and $\beta_2$. We show that Betti numbers entail a considera
Externí odkaz:
http://arxiv.org/abs/1812.07310
Autor:
Veena, Punyakoti Ganeshaiah, Cautun, Marius, van de Weygaert, Rien, Tempel, Elmo, Jones, Bernard J. T., Rieder, Steven, Frenk, Carlos S.
Publikováno v:
2018MNRAS.481..414G
We investigate the alignment of haloes with the filaments of the cosmic web using an unprecedently large sample of dark matter haloes taken from the P-Millennium $\Lambda$CDM cosmological N-body simulation. We use the state-of-the-art NEXUS morpholog
Externí odkaz:
http://arxiv.org/abs/1805.00033
Autor:
Libeskind, Noam I, van de Weygaert, Rien, Cautun, Marius, Falck, Bridget, Tempel, Elmo, Abel, Tom, Alpaslan, Mehmet, Aragoon-Calvo, Miguel A., Forero-Romero, Jaime E., Gonzalez, Roberto, Gottloober, Stefan, Hahn, Oliver, Hellwing, Wojciech A., Hoffman, Yehuda, Jones, Bernard J. T., Kitaura, Francisco, Knebe, Alexander, Manti, Serena, Neyrinck, Mark, Nuza, Sebastiaan E., Padilla, Nelson, Platen, Erwin, Ramachandra, Nesar, Robotham, Aaron, Saar, Enn, Shandarin, Sergei, Steinmetz, Matthias, Stoica, Radu S., Sousbie, Thierry, Yepes, Gustavo
Publikováno v:
MNRAS, 2018, volume 473, pages 1195-1217
The cosmic web is one of the most striking features of the distribution of galaxies and dark matter on the largest scales in the Universe. It is composed of dense regions packed full of galaxies, long filamentary bridges, flattened sheets and vast lo
Externí odkaz:
http://arxiv.org/abs/1705.03021
In 1970 Zel'dovich published a far-reaching paper presenting a simple equation describing the nonlinear growth of primordial density inhomogeneities. The equation was remarkably successful in explaining the large scale structure in the Universe that
Externí odkaz:
http://arxiv.org/abs/1611.01217