# The Structure and Signals of Neutron Stars, from Birth to Death

Mar 24 – 28, 2014
Europe/Rome timezone

## Hybrid stars: how can we identify them ?

Mar 24, 2014, 11:40 AM
40m

### Speaker

Prof. Mark Alford (Washington University in St. Louis, USA)

### Description

At high pressure, nuclear matter will undergo a transition to quark matter, so sufficiently heavy neutron stars may really be hybrid stars'' with quark matter cores. We discuss possible signatures of the presence of a quark matter core, such as characteristics of the mass-radius relation, and the allowed range of values of the spin frequency, which is sensitive to quark matter in the core via the r-mode spindown mechanism. We also present a new form of dissipation of r-modes that is expected to occur in hybrid stars: "phase conversion dissipation".

### Primary author

Prof. Mark Alford (Washington University in St. Louis, USA)

 Slides