On the mass-radius relation for neutron stars

Details On the mass-radius relation for neutron stars On the mass-radius relation for neutron stars

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991basi...19..105a&link_type=abstract

Astronomical Society of India, Bulletin (ISSN 0304-9523), vol. 19, Mar.-June 1991, p. 105-107.

Astronomy and Astrophysics

Astronomy

1

Degenerate Matter, Neutron Stars, Radii, Stellar Mass, Equations Of State, Polytropic Processes

Scientific paper

The classical equation of state for a nonrelativistically degenerate gas containing free fermions gives an upper limit to the radius of a neutron star while the Schwarzschild radius gives the lower limit. The lower mass limit for a neutron star is given by the Oppenheimer-Volkoff solution. These three curves define a triangular region in the mass-radius plane which is available for a real neutron star. If the equation of state for interacting neutrons is represented by a polytropic relation, the region where neutron stars would be found can be delimited. Realistic values of the polytropic index give a mass between 1.8 and 2.8 solar radii and radius between 10 and 11 km for the neutron star.

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