Zobrazeno 1 - 10
of 1 027
pro vyhledávání: '"Becerra L."'
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
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
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
Autor:
Rueda J. A., Ruffini R., Rodriguez J. F., Muccino M., Aimuratov Y., Barres de Almeida U., Becerra L., Bianco C. L., Cherubini C., Filippi S., Kovacevic M., Moradi R., Pisani G. B., Wang Y.
Publikováno v:
EPJ Web of Conferences, Vol 168, p 01006 (2018)
We have sub-classified short and long-duration gamma-ray bursts (GRBs) into seven families according to the binary nature of their progenitors. Short GRBs are produced in mergers of neutron-star binaries (NS-NS) or neutron star-black hole binaries (N
Externí odkaz:
https://doaj.org/article/6cd305397a404b749bdeb04cfdf29e3c
Autor:
Melon Fuksman J. D., Becerra L., L. Bianco C., Karlica M., Kovacevic M., Moradi R., Muccino M., B. Pisani G., Primorac D., A. Rueda J., Ruffini R., Vereshchagin G. V., Wang Y.
Publikováno v:
EPJ Web of Conferences, Vol 168, p 04009 (2018)
The binary-driven hypernova (BdHN) model has been introduced in the past years, to explain a subfamily of gamma-ray bursts (GRBs) with energies Eiso ≥ 1052 erg associated with type Ic supernovae. Such BdHNe have as progenitor a tight binary system
Externí odkaz:
https://doaj.org/article/717d4acf592940c1a649b120fefb25dd
The magnetic fields observed in Ap-stars, white dwarfs, and neutron stars are known to be stable for long times. However, the physical conditions inside the stellar interiors that allow these states are still a matter of research. It has been formall
Externí odkaz:
http://arxiv.org/abs/2209.01042