Thermal evolution of relativistic hyperonic compact stars with calibrated equations of state

نویسندگان

چکیده

A set of unified relativistic mean-field equations state for hyperonic compact stars recently built in [M. Fortin, Ad. R. Raduta, S. Avancini, and C. Provid\^encia, Phys. Rev. D 101, 034017 (2020)] is used to study the thermal evolution nonmagnetized nonrotating spherically-symmetric isolated accreting neutron under different hypothesis concerning proton $S$-wave superfluidity. These have been obtained following way: slope symmetry energy agreement with experimental data; coupling constants $\mathrm{\ensuremath{\Lambda}}$ $\mathrm{\ensuremath{\Xi}}$-hyperons are determined from hypernuclear uncertainties nucleon-$\mathrm{\ensuremath{\Sigma}}$ interaction potential accounted for; current constraints on lower bound maximum star mass satisfied. Within considered state, presence hyperons essential description cooling/heating curves. One conclusions we reach that criterion best observational data leads states superfluidity gaps when applied separately quiescence. This means at least one situation traditional simulation framework employ not complete and/or inappropriate. Another result that, considering which do allow nucleonic dUrca or it only very massive NS, low luminosity SAX J1808 requires a repulsive $\mathrm{\ensuremath{\Sigma}}$-hyperon symmetric nuclear matter range ${U}_{\mathrm{\ensuremath{\Sigma}}}^{(N)}\ensuremath{\approx}10--30\text{ }\text{ }\mathrm{MeV}$. values ${U}_{\mathrm{\ensuremath{\Sigma}}}^{(N)}$ also supported by all available INS XRT.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

General Relativistic Stars: Linear Equations of State

In this paper Einstein’s field equations, for static spherically symmetric perfect fluid models with a linear barotropic equation of state, are recast into a 3-dimensional regular system of ordinary differential equations on a compact state space. The system is analyzed qualitatively, using the theory of dynamical systems, and numerically. It is shown that certain special solutions play importa...

متن کامل

General Relativistic Stars : Polytropic Equations of State

In this paper, the gravitational field equations for static spherically symmetric perfect fluid models with a polytropic equation of state, p = kρ1+1/n, are recast into two complementary 3-dimensional regular systems of ordinary differential equations on compact state spaces. The systems are analyzed numerically and qualitatively, using the theory of dynamical systems. Certain key solutions are...

متن کامل

Evolution equations for the perturbations of slowly rotating relativistic stars

We present a new derivation of the equations governing the oscillations of slowly rotating relativistic stars. Previous investigations have been mostly carried out in the Regge–Wheeler gauge. However, in this gauge the process of linearizing the Einstein field equations leads to perturbation equations which as such cannot be used to perform numerical time evolutions. It is only through the tedi...

متن کامل

Stability of Rigidly Rotating Relativistic Stars with Soft Equations of State against Gravitational Collapse

We study secular stability against a quasi-radial oscillation for rigidly rotating stars with soft equations of state in general relativity. The polytropic equations of state with polytropic index n between 3 and 3.05 are adopted for modeling the rotating stars. The stability is determined in terms of the turning-point method. It is found that (i) for n >∼ 3.04, all the rigidly rotating stars a...

متن کامل

Relativistic Stellar Models with Quadratic Equation of State

In this paper, we have obtained and presented new relativistic stellar configurations considering an anisotropic fluid distribution with a charge distribution and a gravitational potential Z(x) that depends on an adjustable parameter. The quadratic equation of state based on Feroze and Siddiqui viewpoint is used for the matter distribution. The new solutions can be written in terms of elementar...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Physical review

سال: 2021

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physrevd.103.083004