Strange star equation of state fits the refined mass measurement of 12 pulsars and predicts their radii

By Taparati Gangopadhyay, S. Ray, Xiang-dong Li, J. Dey, M. Dey. 2013

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There are three categories of stars whose masses have been found accurately in recent times: (1) two for which Shapiro delay is used which is possible due to GR light bending as the partner is heavy : PSR J1614-2230 and PSR J1903+0327 (2) six eclipsing stars for which numerical Roche Lobe geometry is used and (3) 3 stars for which spectroscopic methods are used and in fact for these three the mass and radii both are estimated. Motivated by large color (N_c) expansion using a modified Richardson potential, along with density dependent quark masses thereby allowing chiral symmetry restoration, we get compact strange stars fitting all the observed masses.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/c02b7c57a67ec5e384150736fda33dc245930d50