Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Negreiros, Rodrigo"'
We study the rotational properties of inverted hybrid stars (also termed cross stars), which have been recently proposed as a possible new class of compact stars characterized by an outer layer of quark matter and a core of hadrons, in an inverted st
Externí odkaz:
http://arxiv.org/abs/2407.06410
Autor:
Farrell, Delaney, Weber, Fridolin, Orsaria, Milva G., Ranea-Sandoval, Ignacio F., Canullán, Martín, Negreiros, Rodrigo, Katayama, Takashi, Wagaman, Ian
This book chapter explores key aspects of neutron stars, pulsar glitches, tidal deformability, fast pulsars, the equation of state, and strange quark matter stars. Challenges in directly measuring neutron star radius have led to reliance on spectrosc
Externí odkaz:
http://arxiv.org/abs/2402.08835
Autor:
Sagun, Violetta, Giangrandi, Edoardo, Dietrich, Tim, Ivanytskyi, Oleksii, Negreiros, Rodrigo, Providência, Constança
Publikováno v:
Astrophys. J. 958, 49 (2023)
Once further confirmed in future analyses, the radius and mass measurement of HESS J1731-347 with $M=0.77^{+0.20}_{-0.17}~M_{\odot}$ and $R=10.4^{+0.86}_{-0.78}~\rm km$ will be among the lightest and smallest compact objects ever detected. This raise
Externí odkaz:
http://arxiv.org/abs/2306.12326
Publikováno v:
A&A 663, A19 (2022)
In this article, we explore the cooling of isolated quark stars. These objects are structured of a homogeneous quark matter core and crusted by matter. To do this, we adopt two kinds of crust: (i) a crust made of purely nuclear matter following the B
Externí odkaz:
http://arxiv.org/abs/2201.06928
Short range correlations (SRC) have been known to be an important aspect of nuclear theory for some time. Recent works have re-ignited interest on this topic, particularly due to the fact that it has recently been demonstrated that SRC may be respons
Externí odkaz:
http://arxiv.org/abs/2004.10309
Publikováno v:
A&A 642, A42 (2020)
In this work we revisit the thermal relaxation process for neutron stars. Such process is associated with the thermal coupling between the core and the crust of neutron stars. The thermal relaxation, which takes place at around 10 -- 100 years, is ma
Externí odkaz:
http://arxiv.org/abs/2004.05019
Akademický článek
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Autor:
Zapata, Joás, Negreiros, Rodrigo
In this paper we consider the possibility that strange quark matter may be manifested in the form of strangelet crystal planets. These planet-like objects are made up of nuggets of strange quark matter (SQM), organized in a crystalline structure. We
Externí odkaz:
http://arxiv.org/abs/1911.02946
Autor:
Lourenço, Odilon, Lenzi, César H., Dutra, Mariana, Frederico, Tobias, Bhuyan, Mrutunjaya, Negreiros, Rodrigo, Flores, Cesar V., Grams, Guilherme, Menezes, Débora P.
In the present work we used five different versions of the quark-meson coupling (QMC) model to compute astrophysical quantities related to the GW170817 event and to neutron star cooling process. Two of the models are based on the original bag potenti
Externí odkaz:
http://arxiv.org/abs/1905.07308
We present two recent parametrizations of the equation of state (FSU2R and FSU2H models) that reproduce the properties of nuclear matter and finite nuclei, fulfill constraints on high-density matter stemming from heavy-ion collisions, produce 2$M_{\o
Externí odkaz:
http://arxiv.org/abs/1903.03525