Finite temperature calculations for the bulk properties of a strange star using a many-body approach

• Published in: Astrophysics Vol. 54; no. 2; pp. 277 - 289
• Main Authors: Bordbar, G. H., Poostforush, A., Zamani, A.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-06-2011; Springer; Springer Nature B.V
• Subjects: Astronomy; Astrophysics; Astrophysics and Astroparticles; Astrophysics and Cosmology; Cosmology; Observations and Techniques; Physics; Physics and Astronomy; Space Exploration and Astronautics; Space Sciences (including Extraterrestrial Physics; Stars & galaxies; Temperature; strange star; equation of state; structure
• ISSN: 0571-7256; 1573-8191
• DOI: 10.1007/s10511-011-9178-5

We have considered a hot strange star matter, just after the collapse of a supernova, as a composition of strange, up and down quarks to calculate the bulk properties of this system at finite temperature with the density dependent bag constant. To parameterize the density dependent bag constant, we use our results for the lowest-order constrained variational (LOCV) calculations of asymmetric nuclear matter. Our calculations for the structure properties of the strange star at different temperatures indicate that its maximum mass decreases by increasing the temperature. We have also compared our results with those of a fixed value of the bag constant. It can be seen that the density-dependent bag constant leads to higher values of the maximum mass and radius for the strange star.