119 citations · 387 across the 17 of their papers we have counts for
17 papers
Cosmology-dependent covariance in galaxy cluster number counts: consequences for parameter inference
Henrique C. N. Lettieri, Mariana Penna-Lima, Sandro D. P. Vitenti
Galaxy clusters provide constraints on cosmology through their abundance as a function of mass and redshift. Parameter inference from cluster counts requires modelling the covarian…
AutoKnots: Adaptive Knot Allocation for Spline Interpolation
Sandro D. P. Vitenti, Fernando de Simoni, Mariana Penna-Lima +1
In astrophysical and cosmological analyses, the increasing quality and volume of astronomical data demand efficient and precise computational tools. This work introduces a novel ad…
Towards including super-sample covariance in the unbinned likelihood for cluster abundance cosmology
Constantin Payerne, Calum Murray, Céline Combet +1
The measurement of the abundance of galaxy clusters in the Universe is a sensitive probe of cosmology, which depends on both the expansion history of the Universe and the growth of…
The miniJPAS survey: clusters and galaxy groups detection with AMICO
M. Maturi, A. Finoguenov, P. A. A. Lopes +31
Samples of galaxy clusters allow us to better understand the physics at play in galaxy formation and to constrain cosmological models once their mass, position (for clustering stud…
Testing the accuracy of likelihoods for cluster abundance cosmology
Constantin Payerne, Calum Murray, Céline Combet +3
The abundance of galaxy clusters is a sensitive probe to the amplitude of matter density fluctuations, the total amount of matter in the Universe as well as its expansion history.…
New formalism to define vacuum states for scalar fields in curved space-times
Mariana Penna-Lima, Nelson Pinto-Neto, Sandro D. P. Vitenti
The problem of finding a vacuum definition for a single quantum field in curved space-times is discussed under a new geometrical perspective. The phase space dynamics of the quantu…
Cosmologia com aglomerados de galáxias
M. Penna-Lima
Galaxy clusters are important cosmological probes since their abundance and spatial distribution are directly linked to structure formation on large scales. The principal uncertain…
The miniJPAS survey: a preview of the Universe in 56 colours
S. Bonoli, A. Marín-Franch, J. Varela +166
The Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) will soon start to scan thousands of square degrees of the northern extragalactic sky with a unique…
Selected Topics in Numerical Methods for Cosmology
Sandro Dias Pinto Vitenti, Mariana Penna-Lima
The large amount of cosmological data already available (and in the near future) makes necessary the development of efficient numerical codes. Many software products have been impl…
Reconstruction of energy conditions from observations and implications for extended theories of gravity
M. Penna-Lima, S. D. P. Vitenti, M. E. S. Alves +2
The attempt to describe the recent accelerated expansion of the Universe includes different propositions for dark energy models and modified gravity theories. Establish their featu…
Cosmological constant constraints from observation-derived energy condition bounds and their application to bimetric massive gravity
M. E. S. Alves, F. C. Carvalho, J. C. N. de Araujo +2
Among the various possibilities to probe the theory behind the recent accelerated expansion of the universe, the energy conditions (ECs) are of particular interest, since it is pos…
Cosmological constraints from a joint analysis of cosmic microwave background and spectroscopic tracers of the large-scale structure
Cyrille Doux, Mariana Penna-Lima, Sandro D. P. Vitenti +3
The standard model of cosmology, ΛCDM, is the simplest model that matches the current observations, but it relies on two hypothetical components, to wit, dark matter and dark energ…
Calibrating the Planck Cluster Mass Scale with CLASH
M. Penna-Lima, J. G. Bartlett, E. Rozo +5
We determine the mass scale of Planck galaxy clusters using gravitational lensing mass measurements from the Cluster Lensing And Supernova survey with Hubble (CLASH). We have compa…
A Bayesian estimate of the CMB-large-scale structure cross-correlation
E. Moura Santos, F. C. Carvalho, M. Penna-Lima +2
Evidences for late-time acceleration of the Universe are provided by multiple probes, such as Type Ia supernovae, the cosmic microwave background (CMB) and large-scale structure (L…
A general reconstruction of the recent expansion history of the universe
S. D. P. Vitenti, M. Penna-Lima
Distance measurements are currently the most powerful tool to study the expansion history of the universe without specifying its matter content nor any theory of gravitation. Assum…
cosmoabc: Likelihood-free inference via Population Monte Carlo Approximate Bayesian Computation
E. E. O. Ishida, S. D. P. Vitenti, M. Penna-Lima +5
Approximate Bayesian Computation (ABC) enables parameter inference for complex physical systems in cases where the true likelihood function is unknown, unavailable, or computationa…
Biases on cosmological parameter estimators from galaxy cluster number counts
M. Penna-Lima, M. Makler, C. A. Wuensche
Sunyaev-Zel'dovich (SZ) surveys are promising probes of cosmology - in particular for Dark Energy (DE) -, given their ability to find distant clusters and provide estimates for the…