RESEARCH ARTICLE Front. Phys. 15(2), 24603 (2020) Relation between gravitational mass and baryonic mass for non-rotating and rapidly rotating neutron stars He Gao 1 , Shun-Ke Ai 2,1 , Zhou-Jian Cao 1 , Bing Zhang 2 , Zhen-Yu Zhu 3,4 , Ang Li 3 , Nai-Bo Zhang 5 , Andrea ...