Low mass strange stars and the compact star 1E1207.4-5209. (arXiv:2007.16022v1 [nucl-th])
<a href="http://arxiv.org/find/nucl-th/1/au:+Pereira_F/0/1/0/all/0/1">F. I. M Pereira</a>
We study the anomalous mass defects in the first (ascendant) branch of
stellar sequences of static strange stars.
We employ the nonperturbative equation of state derived in the framework of
the Field Correlator Method to describe the hydrostatic equilibrium of the
strange matter.
The large distance static $q{bar q}$ potential $V_1$ and the gluon
condensate $G_2$ are the model parameters that characterize the equation of
state.
An attempt is made to determine, from the surface gravitational redshift
measurements, the ratio $({cal P}/{cal E})_C$ at the center of strange stars.
For $V_1=0$ and $G_2gappr0.035,{rm GeV}^4$,, it is shown that $({cal
P}/{cal E})_Csimeq0.262$ and the corresponding redshift $z_Ssimeq0.47$ are
limiting values, at the maximum mass of the stellar sequence .
As a direct application of our study, we try to determine the values of $V_1$
and $G_2$ from astrophysical observations of the compact star 1E1207.4-5209.
Our findings show that $V_1=0.44pm0.1$,GeV and $G_2=0.008pm0.001,{rm
GeV}^4$,.
As a consequence of these high values of the model parameters, the anomalous
mass defect of 1E1207.4-5209 is $|Delta_2M|simeq2.6times10^{53}$,erg,.
We study the anomalous mass defects in the first (ascendant) branch of
stellar sequences of static strange stars.
We employ the nonperturbative equation of state derived in the framework of
the Field Correlator Method to describe the hydrostatic equilibrium of the
strange matter.
The large distance static $q{bar q}$ potential $V_1$ and the gluon
condensate $G_2$ are the model parameters that characterize the equation of
state.
An attempt is made to determine, from the surface gravitational redshift
measurements, the ratio $({cal P}/{cal E})_C$ at the center of strange stars.
For $V_1=0$ and $G_2gappr0.035,{rm GeV}^4$,, it is shown that $({cal
P}/{cal E})_Csimeq0.262$ and the corresponding redshift $z_Ssimeq0.47$ are
limiting values, at the maximum mass of the stellar sequence .
As a direct application of our study, we try to determine the values of $V_1$
and $G_2$ from astrophysical observations of the compact star 1E1207.4-5209.
Our findings show that $V_1=0.44pm0.1$,GeV and $G_2=0.008pm0.001,{rm
GeV}^4$,.
As a consequence of these high values of the model parameters, the anomalous
mass defect of 1E1207.4-5209 is $|Delta_2M|simeq2.6times10^{53}$,erg,.
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