Zobrazeno 1 - 10
of 4 123
pro vyhledávání: '"Villaescusa A"'
After reionization, neutral hydrogen (HI) traces the large-scale structure (LSS) of the Universe, enabling HI intensity mapping (IM) to capture the LSS in 3D and constrain key cosmological parameters. We present a new framework utilizing higher-order
Externí odkaz:
http://arxiv.org/abs/2410.21225
Autor:
Medlock, Isabel, Neufeld, Chloe, Nagai, Daisuke, Alcázar, Daniel Anglés, Genel, Shy, Oppenheimer, Benjamin, Singh, Priyanka, Villaescusa-Navarro, Francisco
The baryonic physics shaping galaxy formation and evolution are complex, spanning a vast range of scales and making them challenging to model. Cosmological simulations rely on subgrid models that produce significantly different predictions. Understan
Externí odkaz:
http://arxiv.org/abs/2410.16361
Autor:
Hernández-Martínez, Elena, Genel, Shy, Villaescusa-Navarro, Francisco, Steinwandel, Ulrich P., Lee, Max E., Lau, Erwin T., Spergel, David N.
We present a study on the inference of cosmological and astrophysical parameters using stacked galaxy cluster profiles. Utilizing the CAMELS-zoomGZ simulations, we explore how various cluster properties--such as X-ray surface brightness, gas density,
Externí odkaz:
http://arxiv.org/abs/2410.10942
Autor:
Reza, Moonzarin, Zhang, Yuanyuan, Avestruz, Camille, Strigari, Louis E., Shevchuk, Simone, Villaescusa-Navarro, Francisco
We test the robustness of simulation-based inference (SBI) in the context of cosmological parameter estimation from galaxy cluster counts and masses in simulated optical datasets. We construct ``simulations'' using analytical models for the galaxy cl
Externí odkaz:
http://arxiv.org/abs/2409.20507
Autor:
Pandey, Shivam, Modi, Chirag, Wandelt, Benjamin D., Bartlett, Deaglan J., Bayer, Adrian E., Bryan, Greg L., Ho, Matthew, Lavaux, Guilhem, Makinen, T. Lucas, Villaescusa-Navarro, Francisco
To maximize the amount of information extracted from cosmological datasets, simulations that accurately represent these observations are necessary. However, traditional simulations that evolve particles under gravity by estimating particle-particle i
Externí odkaz:
http://arxiv.org/abs/2409.09124
Autor:
Nguyen, Tri, Villaescusa-Navarro, Francisco, Mishra-Sharma, Siddharth, Cuesta-Lazaro, Carolina, Torrey, Paul, Farahi, Arya, Garcia, Alex M., Rose, Jonah C., O'Neil, Stephanie, Vogelsberger, Mark, Shen, Xuejian, Roche, Cian, Anglés-Alcázar, Daniel, Kallivayalil, Nitya, Muñoz, Julian B., Cyr-Racine, Francis-Yan, Roy, Sandip, Necib, Lina, Kollmann, Kassidy E.
The connection between galaxies and their host dark matter (DM) halos is critical to our understanding of cosmology, galaxy formation, and DM physics. To maximize the return of upcoming cosmological surveys, we need an accurate way to model this comp
Externí odkaz:
http://arxiv.org/abs/2409.02980
We present a field-level emulator for large-scale structure, capturing the cosmology dependence and the time evolution of cosmic structure formation. The emulator maps linear displacement fields to their corresponding nonlinear displacements from N-b
Externí odkaz:
http://arxiv.org/abs/2408.07699
We present the first application of the Wavelet Scattering Transform (WST) in order to constrain the nature of gravity using the three-dimensional (3D) large-scale structure of the universe. Utilizing the Quijote-MG N-body simulations, we can reliabl
Externí odkaz:
http://arxiv.org/abs/2407.18647
Autor:
Baldi, Marco, Fondi, Emanuele, Karagiannis, Dionysios, Moscardini, Lauro, Ravenni, Andrea, Coulton, William R., Jung, Gabriel, Liguori, Michele, Marinucci, Marco, Verde, Licia, Villaescusa-Navarro, Francisco, Wandelt, Banjamin D.
We present the results of a set of cosmological N-body simulations with standard $\Lambda$CDM cosmology but characterized by a scale-dependent primordial non-Gaussianity of the local type featuring a power-law dependence of the $f_{\rm NL}^{\rm loc}(
Externí odkaz:
http://arxiv.org/abs/2407.06641
Whilst current observational evidence favors a close-to-Gaussian spectrum of primordial perturbations, there exist many models of the early Universe that predict this distribution to have exponentially enhanced or suppressed tails. In this work, we g
Externí odkaz:
http://arxiv.org/abs/2406.15546