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Title: Exact versus Taylor-expanded energy density in the study of the neutron star crust-core transition
Author: Routray, T. R.
Viñas Gausí, Xavier
Basu, D.N.
Pattnaik, Sanjay P.
Centelles Aixalà, Mario
Robledo, L. M.
Behera, B.
Keywords: Estels de neutrons
Neutron stars
Temperature measurements
Issue Date: 23-Aug-2016
Publisher: Institute of Physics (IOP)
Abstract: The importance of the fourth and higher order terms in the Taylor series expansion of the energy of the isospin asymmetric nuclear matter in the study of the neutron star crust-core phase transition is investigated using the finite range simple effective interaction. Analytic expressions for the evaluation of the second and fourth order derivative terms in the Taylor series expansion for any general finite range interaction of Yukawa, exponential or Gaussian form have been obtained. The effect of the nuclear matter incompressibility, symmetry energy and slope parameters on the predictions for the crust-core transition density is examined. The crustal moment of inertia is calculated and the prediction for the radius of the Vela pulsar is analyzed using different equations of state.
Note: Versió postprint del document publicat a:
It is part of: Journal of Physics G: Nuclear and Particle Physics, 2016, vol. 43, num. 10, p. 105101
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ISSN: 0954-3899
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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