Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Kugel, Roi"'
The masses of galaxy clusters are commonly measured from X-ray observations under the assumption of hydrostatic equilibrium (HSE). This technique is known to underestimate the true mass systematically. The fiducial FLAMINGO cosmological hydrodynamica
Externí odkaz:
http://arxiv.org/abs/2409.07849
Autor:
Kugel, Roi, Schaye, Joop, Schaller, Matthieu, Moreno, Victor J. Forouhar, McGibbon, Robert J.
Galaxy cluster counts have historically been important for the measurement of cosmological parameters and upcoming surveys will greatly reduce the statistical errors. To exploit the potential of current and future cluster surveys, theoretical uncerta
Externí odkaz:
http://arxiv.org/abs/2408.17217
Autor:
Contreras, Sergio, Angulo, Raul E., Chaves-Montero, Jonás, Kugel, Roi, Schaller, Matthieu, Schaye, Joop
Context. Mock galaxy catalogues are essential for correctly interpreting current and future generations of galaxy surveys. Despite their significance in galaxy formation and cosmology, little to no work has been done to validate the predictions of th
Externí odkaz:
http://arxiv.org/abs/2407.18912
Autor:
Kugel, Roi, van de Weygaert, Rien
This study concerns an inventory of the gravitational force and tidal field induced by filaments, walls, cluster nodes and voids on Megaparsec scales and how they assemble and shape the Cosmic Web. The study is based on a N$_{\rm Part}=512^3$ $\Lambd
Externí odkaz:
http://arxiv.org/abs/2407.16489
Autor:
Kugel, Roi, Schaye, Joop, Schaller, Matthieu, McCarthy, Ian G., Braspenning, Joey, Helly, John C., Moreno, Victor J. Forouhar, McGibbon, Robert J.
Galaxy clusters provide an avenue to expand our knowledge of cosmology and galaxy evolution. Because it is difficult to accurately measure the total mass of a large number of individual clusters, cluster samples are typically selected using an observ
Externí odkaz:
http://arxiv.org/abs/2406.03180
Autor:
Aramburo-Garcia, Andres, Bondarenko, Kyrylo, Boyarsky, Alexey, Kashko, Pavlo, Pradler, Josef, Sokolenko, Anastasia, Kugel, Roi, Schaller, Matthieu, Schaye, Joop
The resonant conversion, within the inter-galactic medium, of regular photons into dark photons amplifies the anisotropy observed in the CMB, thereby imposing stringent constraints on the existence of light dark photons. In this study, we investigate
Externí odkaz:
http://arxiv.org/abs/2405.05104
Autor:
Kay, Scott T., Braspenning, Joey, Chluba, Jens, Helly, John C., Kugel, Roi, Schaller, Matthieu, Schaye, Joop
The relativistic Sunyaev-Zel'dovich (SZ) effect can be used to measure intracluster gas temperatures independently of X-ray spectroscopy. Here, we use the large-volume FLAMINGO simulation suite to determine whether SZ $y$-weighted temperatures lead t
Externí odkaz:
http://arxiv.org/abs/2404.08539
Autor:
Elbers, Willem, Frenk, Carlos S., Jenkins, Adrian, Li, Baojiu, Helly, John C., Kugel, Roi, Schaller, Matthieu, Schaye, Joop, Braspenning, Joey, Kwan, Juliana, McCarthy, Ian G., Salcido, Jaime, van Daalen, Marcel P., Vandenbroucke, Bert, Pascoli, Silvia
Large-scale structure surveys have reported measurements of the density of matter, $\Omega_\mathrm{m}$, and the amplitude of clustering, $\sigma_8$, that are in tension with the values inferred from observations of the cosmic microwave background. Wh
Externí odkaz:
http://arxiv.org/abs/2403.12967
Autor:
Lim, Seunghwan, Tacchella, Sandro, Schaye, Joop, Schaller, Matthieu, Helton, Jakob M., Kugel, Roi, Maiolino, Roberto
Motivated by the recent JWST discovery of galaxy overdensities during the Epoch of Reionzation, we examine the physical properties of high-$z$ protoclusters and their evolution using the FLAMINGO simulation suite. We investigate the impact of the ape
Externí odkaz:
http://arxiv.org/abs/2402.17819
Autor:
Broxterman, Jeger C., Schaller, Matthieu, Schaye, Joop, Hoekstra, Henk, Kuijken, Konrad, Helly, John C., Kugel, Roi, Braspenning, Joey, Elbers, Willem, Frenk, Carlos S., Kwan, Juliana, McCarthy, Ian G., Salcido, Jaime, van Daalen, Marcel P., Vandenbroucke, Bert
Publikováno v:
MNRAS, Volume 529, Issue 3, April 2024, Pages 2309-2326
Weak gravitational lensing convergence peaks, the local maxima in weak lensing convergence maps, have been shown to contain valuable cosmological information complementary to commonly used two-point statistics. To exploit the full power of weak lensi
Externí odkaz:
http://arxiv.org/abs/2312.08450