scholarly journals Low mass strange stars and the compact star 1E1207.4-5209 in the field correlator method

2021 ◽  
Vol 104 (4) ◽  
Author(s):  
F. I. M. Pereira
Keyword(s):  
Compact Star ◽  
Strange Stars ◽  
Low Mass

4U 1746-37: An ultra-low-mass compact star candidate

2015 ◽  
Vol 336 (8-9) ◽  
pp. 871-875
Author(s):  
Zhao-Sheng Li
Keyword(s):  
Compact Star ◽  
Low Mass

scholarly journals Dark energy stars: Stable configurations

2018 ◽  
Vol 96 (6) ◽  
pp. 594-602 ◽  
Author(s):  
Piyali Bhar ◽  
Tuhina Manna ◽  
Farook Rahaman ◽  
Ayan Banerjee
Keyword(s):  
Dark Energy ◽  
Compact Star ◽  
Vacuum Solution ◽  
Energy Conditions ◽  
Interior Solution ◽  
X Ray ◽  
Proposed Model ◽  
Low Mass ◽  
X Ray Binaries ◽  
Stellar Configuration

In present paper a spherically symmetric stellar configuration has been analyzed by assuming the matter distribution of the stellar configuration is anisotropic in nature and compared with the realistic objects, namely, the low mass X-ray binaries and X-ray pulsars. The analytic solution has been obtained by utilizing the dark energy equation of state for the interior solution corresponding to the Schwarzschild exterior vacuum solution at the junction interface. Several physical properties, like energy conditions, stability, mass–radius ratio, and surface redshift, are described through mathematical calculations as well as graphical plots. It is found that obtained mass–radius ratios of the compact star candidates like 4U 1820–30, PSR J 1614–2230, Vela X-1, and Cen X-3 are very much consistent with the observed data by Gangopadhyay et al. (Mon. Not. R. Astron. Soc. 431, 3216 (2013)). So our proposed model would be useful in the investigation of the possible clustering of dark energy.

POSSIBLE SIGNATURES OF THE CONVERSION OF A NEUTRON STAR TO A STRANGE STAR

1994 ◽  
Vol 03 (03) ◽  
pp. 653-664
Author(s):  
O.G. BENVENUTO ◽  
M.I. KRIVORUCHENKO ◽  
B.V. MARTEMYANOV
Keyword(s):  
Neutron Star ◽  
Neutron Stars ◽  
High Recurrence Rate ◽  
Massive Quark ◽  
Pulsar Emission ◽  
Strange Stars ◽  
X Ray ◽  
Supernova Explosions ◽  
Low Mass ◽  
Step Mechanism

The problem of the identification of strange stars is discussed. We suggest some characteristic signatures for the search for strange stars: a two-step mechanism for supernova explosions accompanied by the occurrence of strange stars and two neutrino bursts; microstructure analysis in the profile of pulsar emission; and unusual stability in the rotation of millisecond pulsars due to the absence of internal crust in strange stars. The cooling of strange stars is faster than the cooling of ordinary neutron stars, so low surface temperature of pulsars can indicate the existence of massive quark cores in observed pulsars. Low mass strange stars as bursters and/or X-ray sources have peculiar observable features: low luminosity and (for bursters) high recurrence rate, large duration of bursts, low ratio of energy emitted between two bursts and energy emitted during the burst.

scholarly journals Relativistic strange stars with anisotropy and B-parameter in pseudo spheroidal space time

2012 ◽  
Vol 8 (S291) ◽  
pp. 362-364
Author(s):  
P. K. Chattopadhyay ◽  
B. C. Paul
Keyword(s):  
Equation Of State ◽  
Compact Star ◽  
Anisotropy Parameter ◽  
Space Time ◽  
Stable Model ◽  
Strange Stars ◽  
Strange Matter ◽  
Pressure Anisotropy ◽  
Spheroidal Geometry ◽  
Anisotropic Case

AbstractA class of compact cold stars in the presence of strange matter is obtained for a pseudo-spheroidal geometry. Considering the strange matter equation of state $p = \frac{1}{3}(\rho-4B)$ with pressure anisotropy described by Vaidya-Tikekar metric, we determine the parameter B both inside and on the surface of the star for different values of anisotropy parameter α. In the anisotropic case, we note that a stable model of a compact star may be realized.

scholarly journals Analytical model of compact star in low-mass X-ray binary with de Sitter spacetime

2019 ◽  
Vol 19 (2) ◽  
pp. 026
Author(s):  
Sajahan Molla ◽  
Rabiul Islam ◽  
Md. Abdul Kayum Jafry ◽  
Mehedi Kalam
Keyword(s):  
Analytical Model ◽  
Compact Star ◽  
De Sitter Spacetime ◽  
De Sitter ◽  
X Ray ◽  
Sitter Spacetime ◽  
Low Mass

scholarly journals STRANGE STARS IN LOW-MASS BINARY PULSAR SYSTEMS

1999 ◽  
Vol 08 (06) ◽  
pp. 669-675 ◽  
Author(s):  
J. E. HORVATH
Keyword(s):  
Magnetic Field ◽  
Neutron Stars ◽  
Strange Stars ◽  
Binary Pulsar ◽  
Working Hypothesis ◽  
History Of ◽  
Low Mass ◽  
The Magnetic Field

Based on observational facts and a variety of theoretical arguments we discuss in this work the possibility that pulsars in Low-Mass Binary Pulsar systems could be strange stars rather than neutron stars. It is shown that, although subject to reasonable uncertainties, the consideration of the physics of the SQM core and thin normal crusts leads to the prediction of several observed features of the magnetic field history of these systems within this working hypothesis.

scholarly journals Low-mass bare strange stars

2006 ◽  
Vol 37 (10) ◽  
pp. 1992-1995 ◽  
Author(s):  
R.X. Xu
Keyword(s):  
Strange Stars ◽  
Low Mass
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