Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Arthur Loureiro"'
Autor:
Elena Sellentin, Arthur Loureiro, Lorne Whiteway, Javier S. Lafaurie, Sreekumar T. Balan, Malak Olamaie, Andrew H. Jaffe, Alan F. Heavens
Publikováno v:
The Open Journal of Astrophysics, Vol 6 (2023)
Inference in cosmology often starts with noisy observations of random fields on the celestial sphere, such as maps of the microwave background radiation, continuous maps of cosmic structure in different wavelengths, or maps of point tracers of the co
Externí odkaz:
https://doaj.org/article/a44a258935e7499583141676069bacb3
Autor:
Stephen Thorp, Justin Alsing, Hiranya V. Peiris, Sinan Deger, Daniel J. Mortlock, Boris Leistedt, Joel Leja, Arthur Loureiro
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 145 (2024)
We present an efficient Bayesian method for estimating individual photometric redshifts and galaxy properties under a pretrained population model ( pop-cosmos ) that was calibrated using purely photometric data. This model specifies a prior distribut
Externí odkaz:
https://doaj.org/article/a66b4be2443e426c8e8f00afe732ae37
Autor:
Nicolas Tessore, Arthur Loureiro, Benjamin Joachimi, Maximilian von Wietersheim-Kramsta, Niall Jeffrey
Publikováno v:
The Open Journal of Astrophysics, Vol 6 (2023)
We present GLASS, the Generator for Large Scale Structure, a new code for the simulation of galaxy surveys for cosmology, which iteratively builds a light cone with matter, galaxies, and weak gravitational lensing signals as a sequence of nested shel
Externí odkaz:
https://doaj.org/article/93513343c8104fe38cbb23b611378ffe
Autor:
Arthur Loureiro, Lorne Whiteway, Elena Sellentin, Javier Silva Lafaurie, Andrew H. Jaffe, Alan F. Heavens
Publikováno v:
The Open Journal of Astrophysics, Vol 6 (2023)
We present a field-based signal extraction of weak lensing from noisy observations on the curved and masked sky. We test the analysis on a simulated Euclid-like survey, using a Euclid-like mask and noise level. To make optimal use of the information
Externí odkaz:
https://doaj.org/article/a6a0be8789ea4cb8be60ef031e75d283
Redshift evolution and peculiar velocities break the isotropy of cosmological surveys with respect to the directions parallel and transverse to the line of sight, limiting the accuracy of the Fourier representation to small areas and redshift ranges.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a684dc5967c5eb1a2aac85fbc3ba6fe
Autor:
Andrei Cuceu, R. P. Rollins, Marc Manera, Michael McLeod, A. Benoit-Lévy, L. Whiteway, Ofer Lahav, Filipe B. Abdalla, H. S. Xavier, Sreekumar Balan, Bruno Moraes, Arthur Loureiro
Publikováno v:
Physical Review Letters
Physical Review Letters, American Physical Society, 2019, 123 (8), pp.081301. ⟨10.1103/PhysRevLett.123.081301⟩
Phys.Rev.Lett.
Phys.Rev.Lett., 2019, 123 (8), pp.081301. ⟨10.1103/PhysRevLett.123.081301⟩
Physical Review Letters, American Physical Society, 2019, 123 (8), pp.081301. ⟨10.1103/PhysRevLett.123.081301⟩
Phys.Rev.Lett.
Phys.Rev.Lett., 2019, 123 (8), pp.081301. ⟨10.1103/PhysRevLett.123.081301⟩
We investigate the impact of prior models on the upper bound of the sum of neutrino masses, $\sum m_{\nu}$. We use data from Large Scale Structure of galaxies, Cosmic Microwave Background, Type Ia SuperNovae, and Big Bang Nucleosynthesis. We probe ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c54ceda283ff07d92078112098766b2f
https://hal.archives-ouvertes.fr/hal-01937644
https://hal.archives-ouvertes.fr/hal-01937644
We present optimal quadratic estimators for the Fourier analysis of cosmological surveys that detect several different types of tracers of large-scale structure. Our estimators can be used to simultaneously fit the matter power spectrum and the biase
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7bd6f437717845f09ab35779b0780bc
http://arxiv.org/abs/1505.04106
http://arxiv.org/abs/1505.04106
Autor:
Marc Arthur Loureiro Storck, Alexandre S. Saraiva, Andrezza M. Rodrigues, Maria Carolina C.X. Soares
Publikováno v:
DST, Vol 13, Iss 6 (2001)
Diante da mudança do perfil epidemiológico dos novos casos de aids no Brasil para uma população heterossexual, feminina, monogâmica, de classe social baixa e menor grau de escolaridade, o presente estudo objetivou caracterizar o perfil das ditas
Externí odkaz:
https://doaj.org/article/5578fc8c7d1e44c7ba10323bb8a1d940