Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Zennaro, Matteo"'
Autor:
Collaboration, Beyond-2pt, Krause, Elisabeth, Kobayashi, Yosuke, Salcedo, Andrés N., Ivanov, Mikhail M., Abel, Tom, Akitsu, Kazuyuki, Angulo, Raul E., Cabass, Giovanni, Contarini, Sofia, Cuesta-Lazaro, Carolina, Hahn, ChangHoon, Hamaus, Nico, Jeong, Donghui, Modi, Chirag, Nguyen, Nhat-Minh, Nishimichi, Takahiro, Paillas, Enrique, Ibañez, Marcos Pellejero, Philcox, Oliver H. E., Pisani, Alice, Schmidt, Fabian, Tanaka, Satoshi, Verza, Giovanni, Yuan, Sihan, Zennaro, Matteo
The last few years have seen the emergence of a wide array of novel techniques for analyzing high-precision data from upcoming galaxy surveys, which aim to extend the statistical analysis of galaxy clustering data beyond the linear regime and the can
Externí odkaz:
http://arxiv.org/abs/2405.02252
Publikováno v:
JCAP08(2024)024
We present a cosmological analysis of the combination of the DES-Y3, KiDS-1000 and HSC-DR1 weak lensing samples under a joint harmonic-space pipeline making use of angular scales down to $\ell_{\rm max}=4500$, corresponding to significantly smaller s
Externí odkaz:
http://arxiv.org/abs/2403.13794
Autor:
Bartlett, Deaglan J., Wandelt, Benjamin D., Zennaro, Matteo, Ferreira, Pedro G., Desmond, Harry
Publikováno v:
A&A 686, A150 (2024)
Rapid and accurate evaluation of the nonlinear matter power spectrum, $P(k)$, as a function of cosmological parameters and redshift is of fundamental importance in cosmology. Analytic approximations provide an interpretable solution, yet current appr
Externí odkaz:
http://arxiv.org/abs/2402.17492
Autor:
Bartlett, Deaglan J., Kammerer, Lukas, Kronberger, Gabriel, Desmond, Harry, Ferreira, Pedro G., Wandelt, Benjamin D., Burlacu, Bogdan, Alonso, David, Zennaro, Matteo
Publikováno v:
A&A 686, A209 (2024)
Computing the matter power spectrum, $P(k)$, as a function of cosmological parameters can be prohibitively slow in cosmological analyses, hence emulating this calculation is desirable. Previous analytic approximations are insufficiently accurate for
Externí odkaz:
http://arxiv.org/abs/2311.15865
Autor:
Nicola, Andrina, Hadzhiyska, Boryana, Findlay, Nathan, García-García, Carlos, Alonso, David, Slosar, Anže, Guo, Zhiyuan, Kokron, Nickolas, Angulo, Raúl, Aviles, Alejandro, Blazek, Jonathan, Dunkley, Jo, Jain, Bhuvnesh, Pellejero, Marcos, Sullivan, James, Walter, Christopher W., Zennaro, Matteo
Upcoming imaging surveys will allow for high signal-to-noise measurements of galaxy clustering at small scales. In this work, we present the results of the LSST bias challenge, the goal of which is to compare the performance of different nonlinear ga
Externí odkaz:
http://arxiv.org/abs/2307.03226
Autor:
Aricò, Giovanni, Angulo, Raul E., Zennaro, Matteo, Contreras, Sergio, Chen, Angela, Hernández-Monteagudo, Carlos
Publikováno v:
A&A 678, A109 (2023)
We present the first analysis of cosmic shear measured in DES Y3 that employs the entire range of angular scales in the data. To achieve this, we build upon recent advances in the theoretical modelling of weak lensing provided by a combination of $N$
Externí odkaz:
http://arxiv.org/abs/2303.05537
Autor:
Pellejero-Ibanez, Marcos, Angulo, Raul E., Zennaro, Matteo, Stuecker, Jens, Contreras, Sergio, Arico, Giovanni, Maion, Francisco
We present an emulator that accurately predicts the power spectrum of galaxies in redshift space as a function of cosmological parameters. Our emulator is based on a 2nd-order Lagrangian bias expansion that is displaced to Eulerian space using cosmol
Externí odkaz:
http://arxiv.org/abs/2207.06437
Cosmological simulations play an increasingly important role in analysing the observed large-scale structure of the Universe. Recently, they have been particularly important in building hybrid models that combine a perturbative bias expansion with di
Externí odkaz:
http://arxiv.org/abs/2204.03868
Autor:
Zennaro, Matteo, Angulo, Raul E., Contreras, Sergio, Pellejero-Ibáñez, Marcos, Maion, Francisco
We study the relations among the parameters of the hybrid Lagrangian bias expansion model, fitting biased auto and cross power spectra up to $k_{\rm max} = 0.7 \, h \, \mathrm{Mpc}^{-1}$. We consider $\sim 8000$ halo and galaxy samples, with differen
Externí odkaz:
http://arxiv.org/abs/2110.05408
Autor:
Pellejero-Ibanez, Marcos, Stuecker, Jens, Angulo, Raul E., Zennaro, Matteo, Contreras, Sergio, Arico, Giovanni
Improving the theoretical description of galaxy clustering on small scales is an important challenge in cosmology, as it can considerably increase the scientific return of forthcoming galaxy surveys -- e.g. tightening the bounds on neutrino masses an
Externí odkaz:
http://arxiv.org/abs/2109.08699