Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Ávila, Santiago"'
Autor:
Reyes-Peraza, Guillermo, Avila, Santiago, Gonzalez-Perez, Violeta, Lopez-Cano, Daniel, Knebe, Alexander, Ramakrishnan, Sujatha, Yepes, Gustavo
Emission line galaxies (ELGs) are targeted by the new generation of spectroscopic surveys to make unprecedented measurements in cosmology from their distribution. Accurately interpreting this data requires understanding the imprints imposed by the ph
Externí odkaz:
http://arxiv.org/abs/2312.13199
Autor:
Adame, Adrian G., Avila, Santiago, Gonzalez-Perez, Violeta, Yepes, Gustavo, Pellejero, Marcos, Wang, Mike S., Chuang, Chia-Hsun, Feng, Yu, Garcia-Bellido, Juan, Knebe, Alexander
Publikováno v:
A&A 689, A69 (2024)
We present the largest full N-body simulation to date with local primordial non-Gaussianities (L-PNG), the \textsc{PNG-UNITsim}. It tracks the evolution of $4096^3$ particles within a periodic box with $L_{\rm box} = 1 \; h^{-1}\,{\rm Gpc}$, leading
Externí odkaz:
http://arxiv.org/abs/2312.12405
Halo Occupation Distribution (HOD) models help us to connect observations and theory, by assigning galaxies to dark matter haloes. In this work we study one of the components of HOD models: the probability distribution function (PDF), which is used t
Externí odkaz:
http://arxiv.org/abs/2310.18189
Autor:
Rezaie, Mehdi, Ross, Ashley J., Seo, Hee-Jong, Kong, Hui, Porredon, Anna, Samushia, Lado, Chaussidon, Edmond, Krolewski, Alex, de Mattia, Arnaud, Beutler, Florian, Aguilar, Jessica Nicole, Ahlen, Steven, Alam, Shadab, Avila, Santiago, Bahr-Kalus, Benedict, Bermejo-Climent, Jose, Brooks, David, Claybaugh, Todd, Cole, Shaun, Dawson, Kyle, de la Macorra, Axel, Doel, Peter, Font-Ribera, Andreu, Forero-Romero, Jaime E., Gontcho, Satya Gontcho A, Guy, Julien, Honscheid, Klaus, Huterer, Dragan, Kisner, Theodore, Landriau, Martin, Levi, Michael, Manera, Marc, Meisner, Aaron, Miquel, Ramon, Mueller, Eva-Maria, Myers, Adam, Newman, Jeffrey A., Nie, Jundan, Palanque-Delabrouille, Nathalie, Percival, Will, Poppett, Claire, Rossi, Graziano, Sanchez, Eusebio, Schubnell, Michael, Tarlé, Gregory, Weaver, Benjamin Alan, Yèche, Christophe, Zhou, Zhimin, Zou, Hu
We use angular clustering of luminous red galaxies from the Dark Energy Spectroscopic Instrument (DESI) imaging surveys to constrain the local primordial non-Gaussianity parameter $\fnl$. Our sample comprises over 12 million targets, covering 14,000
Externí odkaz:
http://arxiv.org/abs/2307.01753
Autor:
Riquelme, Walter, Avila, Santiago, Garcia-Bellido, Juan, Porredon, Anna, Ferrero, Ismael, Chan, Kwan Chuen, Rosenfeld, Rogerio, Camacho, Hugo, Adame, Adrian G., Rosell, Aurelio Carnero, Crocce, Martin, De Vicente, Juan, Eifler, Tim, Elvin-Poole, Jack, Fang, Xiao, Krause, Elisabeth, Monroy, Martin Rodriguez, Ross, Ashley J., Sanchez, Eusebio, Sevilla, Ignacio
Local primordial non-Gaussianity (PNG) is a promising observable of the underlying physics of inflation, characterised by $f_{\rm NL}^{\rm loc}$. We present the methodology to measure $f_{\rm NL}^{\rm loc}$ from the Dark Energy Survey (DES) data usin
Externí odkaz:
http://arxiv.org/abs/2209.07187
Autor:
Avila, Santiago, Adame, Adrian G.
The Fix and Pair techniques were designed to generate simulations with reduced variance in the 2-point statistics by modifying the Initial Conditions (ICs). In this paper we show that this technique is also valid when the initial conditions have loca
Externí odkaz:
http://arxiv.org/abs/2204.11103
Autor:
Barraza, Gustavo Adolfo, Castro-Guijarro, Ana Carla, de la Fuente Hoffmann, Valentina, Bolívar Ávila, Santiago Junior, Flamini, Marina Inés, Sanchez, Angel Matias
Publikováno v:
In Computers in Biology and Medicine October 2024 181
Autor:
Chan, Kwan Chuen, Ferrero, Ismael, Avila, Santiago, Ross, Ashley J., Crocce, Martin, Gaztanaga, Enrique
Photometric data can be analyzed using the three-dimensional correlation function $\xi_{\rm p}$ to extract cosmological information via e.g., measurement of the Baryon Acoustic Oscillations (BAO). Previous studies modeled $\xi_{\rm p} $ assuming a Ga
Externí odkaz:
http://arxiv.org/abs/2110.13332
Autor:
Avila, Santiago, Vos-Ginés, Bernhard, Cunnington, Steven, Stevens, Adam R. H., Yepes, Gustavo, Knebe, Alexander, Chuang, Chia-Hsun
We study the clustering of HI intensity maps produced from simulations with a focus on baryonic acoustic oscillations (BAO) and the effects induced by telescope beam smoothing and foreground cleaning. We start by creating a HI catalogue at $z=1.321$
Externí odkaz:
http://arxiv.org/abs/2105.10454
Autor:
Knebe, Alexander, Lopez-Cano, Daniel, Avila, Santiago, Favole, Ginevra, Stevens, Adam R. H., Gonzalez-Perez, Violeta, Reyes-Peraza, Guillermo, Yepes, Gustavo, Chuang, Chia-Hsun, Kitaura, Francisco-Shu
New surveys such as ESA's Euclid mission are planned to map with unprecedented precision the large-scale structure of the Universe by measuring the 3D positions of tens of millions of galaxies. It is necessary to develop theoretically modelled galaxy
Externí odkaz:
http://arxiv.org/abs/2103.13088