309 citations · 919 across the 40 of their papers we have counts for
39 papers · 1 filter
Testing Statistical Isotropy in the FRB Sky Distribution: A Selection-Function-Aware Framework
Bruno W. N. Ribeiro, Thais Lemos, Carlos A. P. Bengaly +5
We perform a test of statistical isotropy in the Universe using the sky distribution of fast radio bursts (FRBs), based on a compilation of events detected by multiple surve…
Morphological Bias: How Ellipticals and Spirals Trace the Cosmic Web Differently
Paula S. Ferreira, Carlos A. P. Bengaly, Renyue Cen
We present a data-driven measurement of galaxy bias and scale-dependent relative bias for elliptical and spiral galaxies using angular auto- and cross-power spectra from DES and DE…
Measurements of the Angular Homogeneity Scale from DESI DR1
Mariana Lopes-Dias, Carlos A. P. Bengaly, Xiaoyun Shao +4
The study of the large-scale distribution of galaxies provides essential information for testing the standard cosmological model, namely the CDM paradigm. This scenario is based…
On the bin sensitivity of the transverse BAO
Paula S. Ferreira, Carlos A. P. Bengaly
We investigate the transverse BAO projection effect caused by redshift binning uncertainty (). For SKA HI and DESI LRG surveys, we compare Gaussian, top-hat, and semi-Gaussian…
Confirming the uniformity of the Hubble flow with Pantheon+ Supernovae
Xiaoyun Shao, Carlos A. P. Bengaly
According to the perturbed Friedmann model, the difference between Hubble constant measurements in two rest frames, at leading order in velocity, is determined solely by the relati…
Cosmic homogeneity: the effect of redshift-space distortions and bias and cosmological constraints
Xiaoyun Shao, Rodrigo Gonçalves, Carlos A. P. Bengaly +2
We present a novel cosmological analysis based on the angular correlation dimension curve, a cumulative statistic derived from the two-point correlation function. Unlike trad…
Revisiting the CMB homogeneity scale: low multipoles removal effect and extragalactic foreground masking
Xiaoyun Shao, Facundo Toscano, Diego Garcia Lambas +5
The Cosmic Microwave Background (CMB) reaches homogeneity at relatively modest angular scales compared to the expectation of the standard CDM model revealing an important challe…
Current constraints on the minimally extended varying speed of light model through the cosmic distance duality relation
Jaiane Santos, Carlos Bengaly, Rodrigo S. Gonçalves
One of the most crucial tests of the standard cosmological model consists on testing possible variations on fundamental physical constants. In frameworks such as the minimally exte…
Evidence for dynamical dark energy from DESI-DR2 and SN data? A symbolic regression analysis
Agripino Sousa-Neto, Carlos Bengaly, Javier E. Gonzalez +1
Recent measurements of Baryon Acoustic Oscillations (BAO) from the Dark Energy Spectroscopic Survey (DESI DR2), combined with data from the cosmic microwave background (CMB) and Ty…
Non-parametric reconstructions of cosmic curvature: current constraints and forecasts
Mariana L. S. Dias, Antônio F. B. da Cunha, Carlos A. P. Bengaly +2
The assumption of a flat Universe that follows the cosmological principle, i.e., that the universe is statistically homogeneous and isotropic at large scales, comprises one of the…
Measuring the speed of light with cosmological observations: current constraints and forecasts
Jaiane Santos, Carlos Bengaly, Jonathan Morais +1
We measure the speed of light with current observations, such as Type Ia Supernova, galaxy ages, radial BAO mode, as well as simulations of forthcoming redshift surveys and gravita…
Cosmological constraints from angular homogeneity scale measurements
Xiaoyun Shao, Carlos A. P. Bengaly, Rodrigo S. Gonçalves +2
In this paper, we obtain new measurements of the angular homogeneity scale () from the BOSS DR12 and eBOSS DR16 catalogs of Luminous Red Galaxies of the Sloan Digital Sky Surv…
Consistency tests between SDSS and DESI BAO measurements
Basundhara Ghosh, Carlos Bengaly
In this work, we investigate whether the baryon acoustic oscillation (BAO) measurements from redshift surveys, like the Sloan Digital Sky Survey (SDSS), and the Dark Energy Spectro…
Testing the isotropy of cosmic acceleration with Pantheon+ and SH0ES: A cosmographic analysis
Carlos A. P. Bengaly, Cássio Pigozzo, Jailson S. Alcaniz
We use a recent Pantheon+SH0ES compilation of Type Ia Supernova distance measurements at low-redshift, i.e., , in order to investigate the directional depend…
Can the angular scale of cosmic homogeneity be used as a cosmological test?
Xiaoyun Shao, Rodrigo S. Gonçalves, Carlos A. P. Bengaly +3
In standard cosmology, the cosmic homogeneity scale is the transition scale above which the patterns arising from non-uniformities -- such as groups and clusters of galaxies, voids…
Examining the validity of the minimal varying speed of light model through cosmological observations: relaxing the null curvature constraint
Purba Mukherjee, Gabriel Rodrigues, Carlos Bengaly
We revisit a consistency test for the speed of light variability, using the latest cosmological observations. This exercise can serve as a new diagnostics for the standard cosmolog…
Measuring the Hubble Constant with cosmic chronometers: a machine learning approach
Carlos Bengaly, Maria Aldinez Dantas, Luciano Casarini +1
Local measurements of the Hubble constant () based on Cepheids e Type Ia supernova differ by from the estimated value of from Planck CMB observations under…
The angular scale of homogeneity with SDSS-IV DR16 Luminous Red Galaxies
Uendert Andrade, Rodrigo S. Gonçalves, Gabriela C. Carvalho +3
We report measurements of the angular scale of cosmic homogeneity () using the recently released luminous red galaxy sample of the sixteenth data release of the Sloan Digita…
A model-independent test of speed of light variability with cosmological observations
Gabriel Rodrigues, Carlos Bengaly
A powerful test of fundamental physics consists on probing the variability of fundamental constants in Nature. Although they have been measured on Earth laboratories and in our Sol…
Measuring the cosmic homogeneity scale with SDSS-IV DR16 Quasars
Rodrigo S. Gonçalves, Gabriela C. Carvalho, Uendert Andrade +3
We report measurements of the scale of cosmic homogeneity () using the recently released quasar sample of the sixteenth data release of the Sloan Digital Sky Survey (SDSS-IV…
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…
Is there evidence for a hotter Universe?
Carlos A. P. Bengaly, Javier E. Gonzalez, Jailson S. Alcaniz
The measurement of present-day temperature of the Cosmic Microwave Background (CMB), K (1), made by the Far-InfraRed Absolute Spectrophotometer (FIRA…
Null tests of the concordance model in the era of Euclid and the SKA
Carlos A. P. Bengaly, Chris Clarkson, Martin Kunz +1
We perform null tests of the concordance model, using measurements that mimic next-generation surveys such as Euclid and the SKA. To this end, we deploy a non-parametric met…
Is there any measurable redshift dependence on the SN Ia absolute magnitude?
Domenico Sapone, Savvas Nesseris, Carlos A. P. Bengaly
We test the cosmological implications of a varying absolute magnitude of Type Ia supernovae using the Pantheon compilation, by reconstructing different phenomenological approaches…