284 citations · 390 across the 21 of their papers we have counts for
22 papers
Unveiling dark energy properties with high-sensitivity cross-correlations of neutral hydrogen intensity mapping and galaxy surveys
Alessandro Marins, Chang Feng, Filipe B. Abdalla
The redshifted 21 cm line from the hyperfine structure of neutral hydrogen atoms is a promising tracer for the three-dimensional evolution of our universe. Its broad spatial and te…
Simultaneous inference of isotropic and anisotropic polarization rotation angles for next-generation cosmic microwave background experiments
Yue Zhang, Chang Feng, Sen Li +1
The ultrahigh-sensitivity polarization imaging of the cosmic microwave background (CMB) is a treasure trove for new physics. Searching for a predicted polarization angle rotation k…
Photometric classification of quasars from DES and photo- estimation with Machine Learning
Pablo Motta, Filipe B. Abdalla, Elcio Abdalla +2
This paper presents a comprehensive study of quasar photometric classification and redshift estimation using machine learning techniques. We cross-matched photometric data from the…
Interacting Dark Sector field theory with phantom crossing
E. Abdalla, O. P. F. Piedra, A. A. Escobal +4
Recent results from the Dark Energy Spectroscopic Instrument (DESI) provide evidence for a dynamical dark-energy component, whose equation of state appears to have recently crossed…
The BINGO project X. Cosmological parameter constraints from HI Intensity Mapping lognormal simulations
Pablo Motta, Filipe B. Abdalla, Camila P. Novaes +12
Context. Building on the transformative success of optical redshift surveys, the emerging technique of neutral hydrogen (HI) intensity mapping (IM) offers a novel probe of large-sc…
Inference of -mode polarization in the presence of non-Gaussian foregrounds
Sen Li, Chang Feng, Filipe B. Abdalla
The inflationary -mode signals encode invaluable information about the origin of our Universe and searching for potential signatures of primordial gravitational waves (PGWs) is…
Improved constraints on ultralight axions using latest observations of the early and late Universe
Qianshuo Liu, Chang Feng, Filipe B. Abdalla
Ultralight axions (ULAs) are hypothetical particles which can behave like dark matter (DM) or dark energy (DE) depending on masses generated at the symmetry-breaking scale. It rema…
Detectability of the 21 cm signal with BINGO through cross-correlation with photometric surveys
Gabriel A. S. Silva, Camila P. Novaes, Carlos A. Wuensche +11
21 cm intensity mapping (HI IM) can efficiently map large cosmic volumes with good redshift resolution, but systematics and foreground contamination pose major challenges for extra…
Cosmological Remapping for Efficient Generation of 21 cm Intensity Mapping Mocks
Rahima Mokeddem, Bruno B. Bizarria, Jiajun Zhang +10
We present a novel application of cosmological rescaling, or "remapping," to generate 21 cm intensity mapping mocks for different cosmologies. The remapping method allows for compu…
Investigating cross-correlations between cosmic microwave background lensing and 21 cm intensity mapping
Alessandro Marins, Chang Feng, Filipe B. Abdalla
The neutral hydrogen (HI) signal is a crucial probe for astrophysics and cosmology, but it is quite challenging to measure from raw data because of bright foreground contaminants a…
Detecting ultralight axions from multifrequency observations of neutral hydrogen intensity mapping
Qianshuo Liu, Chang Feng, Filipe B. Abdalla
We investigate the effects of ultralight axions (ULAs) on the differential brightness temperature fluctuations of neutral hydrogen at the post-reionization stage. Unique structure…
The BINGO/ABDUS Project: Forecast for cosmological parameters from a mock Fast Radio Bursts survey
Xue Zhang, Yu Sang, Gabriel A. Hoerning +15
There are various surveys that will provide excellent data to search for and localize Fast Radio Bursts (FRBs). The BINGO project will be one such survey, and this collaboration ha…
Cosmological constraints from low redshift 21 cm intensity mapping with machine learning
Camila P. Novaes, Eduardo J. de Mericia, Filipe B. Abdalla +5
The future 21 cm intensity mapping observations constitute a promising way to trace the matter distribution of the Universe and probe cosmology. Here we assess its capability for c…
BINGO-ABDUS: a radiotelescope to unveil the dark sector of the Universe
Elcio Abdalla, Alessandro Marins, Filipe Abdalla +13
we review the Baryon Acoustic Oscillations from Integrated Neutral Gas Observations (BINGO) telescope, an international collaboration, led by Brazil and China, aiming to explore th…
Constraints on interacting dark energy revisited: implications for the Hubble tension
Gabriel A. Hoerning, Ricardo G. Landim, Luiza O. Ponte +3
We revisit a class of coupled dark energy models where dark energy interacts with dark matter via phenomenological energy exchange terms. We include the perturbation of the Hubble…
Baryon acoustic oscillations from Integrated Neutral Gas Observations: Broadband corrugated horn construction and testing
C. A. Wuensche, L. Reitano, M. W. Peel +13
The Baryon acoustic oscillations from Integrated Neutral Gas Observations (BINGO) telescope is a 40-m~class radio telescope under construction that has been designed to measure the…
Stellar Streams Discovered in the Dark Energy Survey
N. Shipp, A. Drlica-Wagner, E. Balbinot +80
We perform a search for stellar streams around the Milky Way using the first three years of multi-band optical imaging data from the Dark Energy Survey (DES). We use DES data cover…
MANTIS: The Mid-Frequency Aperture Array Transient and Intensity-Mapping System
W. A. van Cappellen, M. Santos, J. P. Macquart +14
The objective of this paper is to present the main characteristics of a wide-field MFAA precursor that we envisage to be built at the SKA site in South Africa. Known as MANTIS (the…
Halo detection via large-scale Bayesian inference
Alexander I. Merson, Jens Jasche, Filipe B. Abdalla +4
We present a proof-of-concept of a novel and fully Bayesian methodology designed to detect halos of different masses in cosmological observations subject to noise and systematic un…
Cosmology with a SKA HI intensity mapping survey
Mario G. Santos, Philip Bull, David Alonso +11
HI intensity mapping (IM) is a novel technique capable of mapping the large-scale structure of the Universe in three dimensions and delivering exquisite constraints on cosmology, b…
Weak gravitational lensing with the Square Kilometre Array
M. L. Brown, D. J. Bacon, S. Camera +12
We investigate the capabilities of various stages of the SKA to perform world-leading weak gravitational lensing surveys. We outline a way forward to develop the tools needed for p…
Galaxy Evolution and Cosmology with the Square Kilometre Array
S. Rawlings, F. B. Abdalla, S. L. Bridle +4
The present-day Universe is seemingly dominated by dark energy and dark matter, but mapping the normal (baryonic) content remains vital for both astrophysics - understanding how ga…