Frederico Arroja
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View article: CHEX-MATE: A non-parametric deep learning technique to deproject and deconvolve galaxy cluster X-ray temperature profiles
CHEX-MATE: A non-parametric deep learning technique to deproject and deconvolve galaxy cluster X-ray temperature profiles Open
Temperature profiles of the hot galaxy cluster intracluster medium (ICM) have a complex non-linear structure that traditional parametric modelling may fail to fully approximate. For this study, we made use of neural networks, for the first…
View article: <i>Planck</i>2018 results
<i>Planck</i>2018 results Open
We analyse the Planck full-mission cosmic microwave background (CMB) temperature and E -mode polarization maps to obtain constraints on primordial non-Gaussianity (NG). We compare estimates obtained from separable template-fitting, binned,…
View article: Planck 2015 results XIX. Constraints on primordial magnetic fields
Planck 2015 results XIX. Constraints on primordial magnetic fields Open
The Planck Collaboration acknowledges the support of: ESA; CNES and CNRS/INSU-IN2P3-INP (France); ASI, CNR, and INAF (Italy); NASA and DoE (USA); STFC and UKSA (UK); CSIC, MINECO, JA, and RES (Spain); Tekes, AoF, and CSC (Finland); DLR and…
View article: <i>Planck</i>2018 results
<i>Planck</i>2018 results Open
The European Space Agency’s Planck satellite, which was dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre sky continuously between 12 August 2009 …
View article: Planck 2018 results. IX. Constraints on primordial non-Gaussianity
Planck 2018 results. IX. Constraints on primordial non-Gaussianity Open
We analyse the Planck full-mission cosmic microwave background (CMB) temperature and E-mode polarization maps to obtain constraints on primordial non-Gaussianity (NG). We compare estimates obtained from separable template-fitting, binned, …
View article: ComPRASS: a Combined Planck-RASS catalogue of X-ray-SZ clusters
ComPRASS: a Combined Planck-RASS catalogue of X-ray-SZ clusters Open
We present the first all-sky catalogue of galaxy clusters and cluster candidates obtained from joint X-ray-SZ detections using observations from the Planck satellite and the ROSAT all-sky survey (RASS). The catalogue contains 2323 objects …
View article: Planck 2018 results. I. Overview and the cosmological legacy of Planck
Planck 2018 results. I. Overview and the cosmological legacy of Planck Open
The European Space Agency's Planck satellite, which was dedicated to studying\nthe early Universe and its subsequent evolution, was launched on 14 May 2009.\nIt scanned the microwave and submillimetre sky continuously between 12 August\n20…
View article: Large-scale structure in mimetic Horndeski gravity
Large-scale structure in mimetic Horndeski gravity Open
In this paper, we propose to use the mimetic Horndeski model as a model for the dark universe. Both cold dark matter (CDM) and dark energy (DE) phenomena are described by a single component, the mimetic field. In linear theory, we show tha…
View article: Exploring cosmic origins with CORE: Cosmological parameters
Exploring cosmic origins with CORE: Cosmological parameters Open
We forecast the main cosmological parameter constraints achievable with the CORE space mission which is dedicated to mapping the polarisation of the Cosmic Microwave Background (CMB). CORE was recently submitted in response to ESA's fifth …
View article: Exploring cosmic origins with CORE: Inflation
Exploring cosmic origins with CORE: Inflation Open
We forecast the scientific capabilities to improve our understanding of cosmic inflation of CORE, a proposed CMB space satellite submitted in response to the ESA fifth call for a medium-size mission opportunity. The CORE satellite will map…
View article: Singular instantons in Eddington-inspired-Born-Infeld gravity
Singular instantons in Eddington-inspired-Born-Infeld gravity Open
In this work, we investigate $O(4)$-symmetric instantons within the\nEddington-inspired-Born-Infeld gravity theory (EiBI). We discuss the regular\nHawking-Moss instanton and find that the tunneling rate reduces to the General\nRelativity (…
View article: Planck 2015 results: XVII. Constraints on primordial non-Gaussianity
Planck 2015 results: XVII. Constraints on primordial non-Gaussianity Open
The Planck full mission cosmic microwave background (CMB) temperature and E-mode polarization maps are analysed to obtain constraints on primordial non-Gaussianity (NG). Using three classes of optimal bispectrum estimators-separable templa…
View article: Planck 2015 results
Planck 2015 results Open
We present the implications for cosmic inflation of the Planck measurements of the cosmic microwave background (CMB) anisotropies in both temperature and polarization based on the full Planck survey, which includes more than twice the inte…
View article: <i>Planck</i>2015 results
<i>Planck</i>2015 results Open
We present the implications for cosmic inflation of the Planck measurements\nof the cosmic microwave background (CMB) anisotropies in both temperature and\npolarization based on the full Planck survey. The Planck full mission\ntemperature …
View article: <i>Planck</i>2015 results
<i>Planck</i>2015 results Open
The European Space Agency’s Planck satellite, which is dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre sky continuously between 12 August 2009 a…
View article: Cosmological perturbations in mimetic Horndeski gravity
Cosmological perturbations in mimetic Horndeski gravity Open
We study linear scalar perturbations around a flat FLRW background in mimetic\nHorndeski gravity. In the absence of matter, we show that the Newtonian\npotential satisfies a second-order differential equation with no spatial\nderivatives. …
View article: <i>Planck</i>2015 results
<i>Planck</i>2015 results Open
In this paper, we compute and investigate four types of imprint of a stochastic background of primordial magnetic fields (PMFs) on the cosmic microwave background (CMB) anisotropies: the impact of PMFs on the CMB temperature and polarizati…
View article: <i>Planck</i>2015 results
<i>Planck</i>2015 results Open
We report that the Planck full mission cosmic microwave background (CMB) temperature and E-mode polarization maps are analysed to obtain constraints on primordial non-Gaussianity (NG). Using three classes of optimal bispectrum estimators –…
View article: Non-thermal emission from galaxy clusters: feasibility study with SKA
Non-thermal emission from galaxy clusters: feasibility study with SKA Open
Galaxy clusters are known to host a variety of extended radio sources: tailed radio galaxies whose shape is modelled by the interaction with the intra-cluster medium (ICM); radio bubbles filling cavities in the ICM distribution and rising …
View article: Planck 2015. XX. Constraints on inflation
Planck 2015. XX. Constraints on inflation Open
We present the implications for cosmic inflation of the Planck measurements of the cosmic microwave background (CMB) anisotropies in both temperature and polarization based on the full Planck survey. The Planck full mission temperature dat…