Zobrazeno 1 - 10
of 212
pro vyhledávání: '"Becerra, Á M."'
Anisotropy of local pressure distribution and dissipation are essential in understanding the evolution of the internal structure of compact objects and their observable characteristics. In this work, we reinterpret local pressure anisotropy in relati
Externí odkaz:
http://arxiv.org/abs/2410.18231
In this work, we study the impact of anisotropy on slowly rotating neutron stars by extending the Hartle-Thorne formalism in general relativity to include anisotropy in pressure up to second order in the angular velocity. We assess the presence of an
Externí odkaz:
http://arxiv.org/abs/2410.06316
Autor:
Becerra, L. M., Cipolletta, F., Fryer, C. L., Menezes, Débora P., Providência, Constança, Rueda, J. A., Ruffini, R.
The binary-driven hypernova (BdHN) model proposes long gamma-ray bursts (GRBs) originate in binaries composed of a carbon-oxygen (CO) star and a neutron star (NS) companion. The CO core collapse generates a newborn NS and a supernova that triggers th
Externí odkaz:
http://arxiv.org/abs/2409.05767
Publikováno v:
Phys. Rev. D 110, 104070 (2024)
The generalized SU(2) Proca theory is a vector-tensor modified gravity theory characterized by an action that remains invariant under both diffeomorphisms and global internal transformations of the SU(2) group. This study aims to further explore the
Externí odkaz:
http://arxiv.org/abs/2408.07674
We present smoothed-particle-hydrodynamics (SPH) simulations of the binary-driven hypernova (BdHN) scenario of long gamma-ray bursts (GRBs), focusing on the binary stability during the supernova (SN) explosion. The BdHN progenitor is a binary compris
Externí odkaz:
http://arxiv.org/abs/2401.15702
In this paper, we study the impact of anisotropy on neutron stars with different equations of state, which have been modeled by a piecewise polytropic function with continuous sound speed. Anisotropic pressure in neutron stars is often attributed to
Externí odkaz:
http://arxiv.org/abs/2401.10311
In this work, we investigate whether the compact object at the center of the Milky Way is a naked singularity described by the $\textit{q}$-metric spacetime. Our fitting of the astrometric and spectroscopic data for the S2 star implies that similarly
Externí odkaz:
http://arxiv.org/abs/2311.06653
The binary-driven hypernova (BdHN) model explains long gamma-ray bursts (GRBs) associated with supernovae (SNe) Ic through physical episodes that occur in a binary composed of a carbon-oxygen (CO) star and a neutron star (NS) companion in close orbit
Externí odkaz:
http://arxiv.org/abs/2307.09646
We studied five methods to include anisotropy, or unequal stress distributions, in general relativistic matter configurations. We used nine acceptability conditions that the metric and physical variables must meet to determine if our models were astr
Externí odkaz:
http://arxiv.org/abs/2307.06257
Autor:
Aimuratov, Y., Becerra, L. M., Bianco, C. L., Cherubini, C., Della Valle, M., Filippi, S., Li, Liang, Moradi, R., Rastegarnia, F., Rueda, J. A., Ruffini, R., Sahakyan, N., Wang, Y., Zhang, S. R.
Publikováno v:
ApJ, 955 (2023) 93
The observations of supernovae (SNe) Ic occurring after the prompt emission of long gamma-ray bursts (GRBs) are addressed within the binary-driven hypernova (BdHN) model where GRBs originate from a binary composed of a $\sim10M_\odot$ carbon-oxygen (
Externí odkaz:
http://arxiv.org/abs/2303.16902