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Hyperons, quarks and neutron stars

ECT* Colloquium
Speaker: 
Isaac Vidana (University of Coimbra, Portugal)
Date: 
22 Oct 2013 - 14:30
Location: 
ECT* Conference room
Abstract: 

In this talk I will review some of the effects of strangeness on   neutron and proto-neutron star properties. I will revise in particular the problem of the strong softening of the EoS, and the consequent reduction of the maximum mass, due to the presence of hyperons, a puzzle which has become more intringuing due to the recent measurements of the unusually high masses of the millisecond pulsars PSR J1903+0327 (1.667 +/- 0.021 Msun), PSR J1614-2230 (1.97 +/- 0.04 Msun) an PSR  J0348+0432 (2.01 +/- 0.04 Msun). I will discuss some of the possible solutions to this problem proposed. I will examine also the role of  hyperons on the cooling properties of newly  born neutron stars and on  the so/called r-mode instability