455 citations · 1.9k across the 36 of their papers we have counts for
37 papers
Enhancing Constraints on Ultralight Axion Dark Matter from Gravitational Capture
Pierce Giffin, Pankaj Munbodh, Elisa G. M. Ferreira
Ultralight axions can be gravitationally captured by massive bodies such as the Sun, producing solar-bound gravitational atom states that amplify the local dark matter density thro…
A lensed radio jet at milli-arcsecond resolution II: Constraints on fuzzy dark matter from an extended gravitational arc
Devon M. Powell, Simona Vegetti, J. P. McKean +4
Using a single gravitational lens system observed at milli-arcsecond resolution with very long baseline interferometry (VLBI), we place a lower bound on the mass of the…
Resolving the Hubble tension with Early Dark Energy
Laura Herold, Elisa G. M. Ferreira
Early dark energy (EDE) offers a solution to the so-called Hubble tension. Recently, it was shown that the constraints on EDE using Markov Chain Monte Carlo are affected by prior v…
The BINGO project VIII: On the recoverability of the BAO signal on HI intensity mapping simulations
Camila Paiva Novaes, Jiajun Zhang, Eduardo J. de Mericia +17
A new and promising technique for observing the Universe and study the dark sector is the intensity mapping of the redshifted 21cm line of neutral hydrogen (HI). The BINGO radio te…
Restoring cosmological concordance with early dark energy and massive neutrinos?
Alexander Reeves, Laura Herold, Sunny Vagnozzi +2
The early dark energy (EDE) solution to the Hubble tension comes at the cost of an increased clustering amplitude that has been argued to worsen the fit to galaxy clustering data.…
Testing synchrotron models and frequency resolution in BINGO 21 cm simulated maps using GNILC
Eduardo J. de Mericia, Larissa Santos, Carlos Alexandre Wuensche +16
To recover the 21 cm hydrogen line, it is essential to separate the cosmological signal from the much stronger foreground contributions at radio frequencies. The BINGO radio telesc…
New constraint on Early Dark Energy from Planck and BOSS data using the profile likelihood
Laura Herold, Elisa G. M. Ferreira, Eiichiro Komatsu
A dark energy-like component in the early universe, known as early dark energy (EDE), is a proposed solution to the Hubble tension. Currently, there is no consensus in the literatu…
Cosmic Filament Spin from Dark Matter Vortices
Stephon Alexander, Christian Capanelli, Elisa G. M. Ferreira +1
The recent observational evidence for cosmic filament spin on megaparsec scales (Wang et al, Nature Astronomy 5, 839-845 (2021)) demands an explanation in the physics of dark matte…
The Diversity of Core Halo Structure in the Fuzzy Dark Matter Model
Hei Yin Jowett Chan, Elisa G. M. Ferreira, Simon May +2
In the fuzzy dark matter (FDM) model, gravitationally collapsed objects always consist of a solitonic core located within a virialised halo. Although various numerical simulations…
The BINGO Project VI: HI Halo Occupation Distribution and Mock Building
Jiajun Zhang, Pablo Motta, Camila P. Novaes +19
BINGO (Baryon Acoustic Oscillations from Integrated Neutral Gas Observations.) is a radio telescope designed to survey from 980 MHz to 1260 MHz, observe the neutral Hydrogen (HI) 2…
The BINGO Project VII: Cosmological Forecasts from 21cm Intensity Mapping
Andre A. Costa, Ricardo G. Landim, Camila P. Novaes +17
The 21cm line of neutral hydrogen (HI) opens a new avenue in our exploration of the structure and evolution of the Universe. It provides complementary data to the current large-sca…
The BINGO Project V: Further steps in Component Separation and Bispectrum Analysis
Karin S. F. Fornazier, Filipe B. Abdalla, Mathieu Remazeilles +20
Observing the neutral hydrogen distribution across the Universe via redshifted 21cm line intensity mapping constitutes a powerful probe for cosmology. However, the redshifted 21cm…
The BINGO Project IV: Simulations for mission performance assessment and preliminary component separation steps
Vincenzo Liccardo, Eduardo J. de Mericia, Carlos A. Wuensche +21
The large-scale distribution of neutral hydrogen (HI) in the Universe is luminous through its 21 cm emission. The goal of the Baryon Acoustic Oscillations from Integrated Neutral G…
The BINGO Project III: Optical design and optimisation of the focal plane
Filipe B. Abdalla, Alessandro Marins, Pablo Motta +26
The BINGO telescope was designed to measure the fluctuations of the 21-cm radiation arising from the hyperfine transition of neutral hydrogen and aims to measure the Baryon Acousti…
The BINGO Project II: Instrument Description
Carlos A. Wuensche, Thyrso Villela, Elcio Abdalla +41
The measurement of diffuse 21-cm radiation from the hyperfine transition of neutral hydrogen (HI signal) in different redshifts is an important tool for modern cosmology. However,…
The BINGO Project I: Baryon Acoustic Oscillations from Integrated Neutral Gas Observations
Elcio Abdalla, Elisa G. M. Ferreira, Ricardo G. Landim +43
Observations of the redshifted 21-cm line of neutral hydrogen (HI) are a new and powerful window of observation that offers us the possibility to map the spatial distribution of co…
Baryon Acoustic Oscillations from Integrated Neutral Gas Observations: an instrument to observe the 21cm hydrogen line in the redshift range 0.13 z 0.45 -- status update
Carlos A. Wuensche, Elcio Abdalla, Filipe Batoni Abdalla +48
BINGO (BAO from Integrated Neutral Gas Observations) is a unique radio telescope designed to map the intensity of neutral hydrogen distribution at cosmological distances, making th…
Narrowing the mass range of Fuzzy Dark Matter with Ultra-faint Dwarfs
Kohei Hayashi, Elisa G. M. Ferreira, Hei Yin Jowett Chan
Fuzzy dark matter (FDM) is an attractive dark matter candidate motivated by small scale problems in astrophysics and with a rich phenomenology on those scales. We scrutinize the FD…
Ultra-Light Dark Matter
Elisa G. M. Ferreira
Ultra-light dark matter (ULDM) is a class of dark matter models (DM) where DM is composed by bosons with masses ranging from . These model…
Unified Superfluid Dark Sector
Elisa G. M. Ferreira
In this talk I present a new model of a unified dark sector, where late-time cosmic acceleration emerges from the dark matter (DM) superfluid framework. We will start by reviewing…
Unified Superfluid Dark Sector
Elisa G. M. Ferreira, Guilherme Franzmann, Justin Khoury +1
We present a novel theory of a unified dark sector, where late-time cosmic acceleration emerges from the dark matter superfluid framework. The system is described by a superfluid m…
Constraining interacting dark energy with CMB and BAO future surveys
Larissa Santos, Wen Zhao, Elisa G. M. Ferreira +1
In this paper, we perform a forecast analysis to test the capacity of future baryon acoustic oscillation (BAO) and cosmic microwave background (CMB) experiments to constrain phenom…
Covariant c-flation: a variational approach
Renato Costa, Rodrigo R. Cuzinatto, Elisa. M. G. Ferreira +1
We develop an action principle to construct the dynamics that give rise to a minimal generalization of Einstein's equations, where the speed of light (), the gravitational const…
Dynamics of Cosmological Perturbations and Reheating in the Anamorphic Universe
L. L. Graef, W. S. Hipolito-Ricaldi, Elisa G. M. Ferreira +1
We discuss scalar-tensor realizations of the Anamorphic cosmological scenario recently proposed by Ijjas and Steinhardt. Through an analysis of the dynamics of cosmological perturb…