Zobrazeno 1 - 10
of 275
pro vyhledávání: '"Sandoval, Ignacio"'
We investigate the radial stability of neutron stars under conditions where their composition may or may not remain in chemical equilibrium during oscillations. Using different equations of state that include nucleons, hyperons, and/or $\Delta$ reson
Externí odkaz:
http://arxiv.org/abs/2412.20133
Publikováno v:
Phys. Rev. D 110, 043026, August 2024
We explore an alternative explanation for the low-mass ultra-compact star in the supernova remnant HESS~J1731-347 using a model-agnostic approach to construct hybrid equations of state. The hadronic part of the hybrid equation of state is constructed
Externí odkaz:
http://arxiv.org/abs/2407.06347
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:
Celi, Marcos O., Bashkanov, Mikhail, Mariani, Mauro, Orsaria, Milva G., Pastore, Alessandro, Ranea-Sandoval, Ignacio F., Weber, Fridolin
We study the effects of the first nontrivial hexaquark, $d^*$(2380), on the equation of state of dense neutron star matter and investigate the consequences of its existence for neutron stars. The matter in the core regions of neutron stars is describ
Externí odkaz:
http://arxiv.org/abs/2312.03880
Autor:
Mariani, Mauro, Albertus, Conrado, Alessandroni, M. del Rosario, Orsaria, Milva G., Pérez-García, M. Ángeles, Ranea-Sandoval, Ignacio F.
We investigate the structure of admixed neutron stars with a regular hadronic component and a fraction of fermionic self-interacting dark matter. Using two limiting equations of state for the dense baryonic interior, constructed from piecewise genera
Externí odkaz:
http://arxiv.org/abs/2311.14004
Autor:
Ranea-Sandoval, Ignacio F., Mariani, Mauro, Celi, Marcos O., Rodríguez, M. Camila, Tonetto, Lucas
Publikováno v:
Phys. Rev. D 107, 123028 2023
In this work, we consider polar perturbations and we calculate the frequency and damping time of the quadrupolar fundamental f -mode of compact objects, constructed using a wide range of model-independent hybrid equations of state that include quark
Externí odkaz:
http://arxiv.org/abs/2306.02823
The future detection of gravitational waves (GWs) from a galactic core-collapse supernova will provide information on the physics inside protoneutron stars (PNS). In this work, we apply three different classification methods for the PNS non-radial os
Externí odkaz:
http://arxiv.org/abs/2304.00033
We revisit asteroseismology with quadrupolar wI modes and present universal relationships for its fundamental and first overtone. In contrast to relationships proposed in the literature, our universal relationships are capable of including slow stabl
Externí odkaz:
http://arxiv.org/abs/2212.10514
Multi-messenger astronomy with gravitational waves is a blooming area whose limits are not clear. After the first detection of binary black hole merger and the famous event GW170817 and its electromagnetic counterpart, the compact-object astrophysica
Externí odkaz:
http://arxiv.org/abs/2208.07667
The most recent detections of LIGO/Virgo and NICER have placed strong constraints on neutron stars' properties. In this work, we study neutron stars modeling them as hybrid stars, compact objects with a quark matter core surrounded by layers of hadro
Externí odkaz:
http://arxiv.org/abs/2203.15673