David F. Mota

Distances of Centaurus A and M83 galaxies

Faucher A, David Benisty, David F. Mota

fr, uz, de (code pays fourni par la source)

Predicting the final states of binary-single scattering with machine learning

Ahmad Farhani Asl, David F. Mota, Dennis Fremstad, Fatemeh Rahimi

Context. Binary-single encounters are particularly frequent in dense stellar environments, where they play a central role in shaping the dynamical evolution of their host systems. However, predicting their final outcomes remains an open question due to the intrinsic chaotic nature of the …

ir, no (code pays fourni par la source)

Predicting the final states of binary-single scattering with machine learning

Ahmad Farhani Asl, David F. Mota, Dennis Fremstad, Fatemeh Rahimi

Context. Binary-single encounters are particularly frequent in dense stellar environments, where they play a central role in shaping the dynamical evolution of their host systems. However, predicting their final outcomes remains an open question due to the intrinsic chaotic nature of the …

no, uz, ir (code pays fourni par la source)

Cosmographic constraints on a Gödel-type rotating universe

Anshul Verma, Pavan K. Aluri, David F. Mota, Yuri N. Obukhov

Abstract We investigate the possibility of global cosmic rotation using a Gödel-type rotating cosmological model, constrained through a cosmographic analysis of Type Ia supernovae (SNIa) from the Pantheon+ dataset. Employing a Taylor-expanded apparent magnitude–redshift relation derived via the Kristian-Sachs formalism, we analyze …

in, no, ru (code pays fourni par la source)

Luminosity-temperature relation as a probe for modified gravity

Antonino Del Popolo, Saeed Fakhry, David F. Mota

We investigate the luminosity-temperature ( L − T ) relation of galaxy clusters as a probe for testing modified gravity (MG) theories, focusing on f ( R ) gravity and symmetron models. Using an improved semianalytic framework that incorporates angular momentum acquisition, …

it, es, no (code pays fourni par la source)

Is Dark Energy Changing? Probing the Universe’s Expansion with Present and Future Astronomical Probes

Mehdi Rezaei, Supriya Pan, Weiqiang Yang, David F. Mota

Abstract This study explores the possibility of a time-varying dark energy (DE) equation of state (EoS) deviating from −1. We employ a comprehensive data set of the usual astronomical probes (Type Ia supernovae, baryon acoustic oscillations, Big Bang nucleosynthesis, Hubble data, and …

Euclid preparation. Review of forecast constraints on dark energy and modified gravity

Euclid Collaboration, N. Frusciante, M. Martinelli, L. Lombriser et autres

The Euclid mission has been designed to provide, as one of its main deliverables, information on the nature of the gravitational interaction, which determines the expansion of the Universe and the formation of structures. Thus, Euclid has the potential to test deviations …

it, ch, nl, si, gb, fr, no, pt, es, ro, lb, de, us, fi (code pays fourni par la source)

Forecasting constraints on quintessential inflation from future generation of galaxy and CMB surveys

Gabriel Rodrigues, F. B. M. dos Santos, S. Santos da Costa, J. G. Rodrigues et autres

Abstract We investigate the constraining power of future CMB and galaxy surveys on models of quintessential inflation realized within the framework of α -attractors. We analyze how these future datasets will probe the parameter space of α -attractor quintessential inflation, specifically the …

br, it, no (code pays fourni par la source)

Hubble Constant and Mass Determination of Centaurus A & M83 from TRGB Distances

Adrian Faucher, David Benisty, David F. Mota

An independent determination of the Hubble constant is crucial given the persistent tension between early- and late-Universe measurements. In this study, we analyze the dynamics of the Centaurus~A (CenA) and M83 galaxies, along with their associated dwarf companions identified via Tip of …

fr (code pays fourni par la source)

Shadows of naked singularity in Brans–Dicke gravity

Prajwal Hassan Puttasiddappa, Davi C. Rodrigues, David F. Mota

Abstract We investigate exact vacuum solutions in Brans–Dicke (BD) gravity, focusing on their implications for black hole shadow imaging. Motivated by the Event Horizon Telescope (EHT) observations, we revisit a class of BD solutions that exhibit a naked singularity. These solutions, despite …

no, us, br (code pays fourni par la source)

Clozapine-Resistant Schizophrenia and Wolff-Parkinson-White Syndrome

Alexsander S. Pires, Isabela Faria, M. Bajouco, David F. Mota

pt (code pays fourni par la source)

Lorentz violation with gravitational waves: Constraints from NANOGrav and IPTA data

Alireza Allahyari, Mohammadreza Davari, David F. Mota

ir, no (code pays fourni par la source)