Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....97l..12c&link_type=abstract
Astronomy and Astrophysics, vol. 97, no. 2, Apr. 1981, p. L12-L14.
Astronomy and Astrophysics
Astronomy
4
Critical Mass, Gravitational Collapse, Neutron Stars, Relativity, Stellar Mass, Binary Stars, Black Holes (Astronomy), Energy Conservation, Formalism, Parameterization, Stellar Gravitation
Scientific paper
The masses of the equilibrium configurations of neutron stars have been computed within the parameterized post Newtonian formalism (PPN) for the sake of comparison with current experimental tests of gravitational theories. It is shown how general requirements, like the conservation of energy and momentum of an isolated system, impose severe constraints on the PPN parameters; and that results are at variance with those previously reported by Wagoner and Malone (1974). It is concluded that the concept of critical mass against gravitational collapse still exists in PPN theories, and that the full nonlinear contributions of general relativity tends to lower the numerical value of the critical mass.
Ciufolini Ignazio
Ruffini Remo
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