Volume 585, January 2016
|Number of page(s)||11|
|Section||Stellar structure and evolution|
|Published online||23 December 2015|
Extended Skyrme equation of state in asymmetric nuclear matter
1 Université Lyon 1, Institut de Physique Nucléaire de Lyon, UMR 5822, CNRS-IN2P3, 43 Bd. du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
2 CEA, DAM, DIF, 91297 Arpajon, France
3 IFIC (CSIC-Universidad de Valencia), Apartado Postal 22085, 46071 Valencia, Spain
Received: 11 June 2015
Accepted: 16 September 2015
We present a new equation of state for infinite systems (symmetric, asymmetric, and neutron matter) based on an extended Skyrme functional that has been constrained by microscopic Brueckner-Bethe-Goldstone results. The resulting equation of state reproduces the main features of microscopic calculations very accurately and is compatible with recent measurements of two times Solar-mass neutron stars. We provide all necessary analytical expressions to facilitate a quick numerical implementation of quantities of astrophysical interest.
Key words: dense matter / equation of state
© ESO, 2015
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