Affiliation:
1. School of Sciences, Southwest Petroleum University, Chengdu 610500, P. R. China
Abstract
The effect of the nucleon coupling constants on the mass radius ratio (further, the surface gravitational redshift) of proto neutron star (PNS) PSR J0737-3039A is examined with relativistic mean field theory in consideration of a baryon octet. Here, five sets of nucleon coupling constants DD-MEI, GL85, GL97, GM1 and NL2 are used. The PNS’s temperature is assumed to be [Formula: see text] MeV and the mass the PNS PSR J0737-3039A is chosen as [Formula: see text]. The radius and the mass radius ratio of the PNS PSR J0737-3039A calculated by the five groups of nucleon coupling constants above are [Formula: see text] km and [Formula: see text]/km, respectively. The surface gravitational redshift [Formula: see text] of the PNS PSR J0737-3039A calculated from the above five groups of nucleon coupling constants is [Formula: see text].
Funder
The Natural Science Foundation of China
The Special Project of Science and Technology Strategic Cooperation between Nanchong City and Southwest Petroleum University
Publisher
World Scientific Pub Co Pte Ltd
Subject
General Physics and Astronomy,Astronomy and Astrophysics,Nuclear and High Energy Physics