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Hyperons and Neutron Stars

Authors: I. Vidaña

Ref.: AIP Conference Proceedings 1645, 79-85 (2015)

Abstract: n this lecture I will briefly review some of the effects of hyperons on the properties of neutron and proto-neutron stars. In particular, I will revise the problem of the strong softening of the EoS, and the consequent reduction of the maximum mass, induced by the presence of hyperons, a puzzle which has become more intringuing and difficult to solve due the recent measurements of the unusually high masses of the millisecond pulsars PSR J1903+0327 (1.667±0.021M ⊙), PSR J1614–2230 (1.97±0.04M ⊙), and PSR J0348+0432 (2.01±0.04M ⊙). Finally, I will also examine the role of hyperons on the cooling properties of newly born neutron stars and on the so-called r-mode instability.

DOI: 10.1063/1.4909561