Cooling curves for neutron stars with hadronic matter and quark matter

Understand

The thermal evolution of isothermal neutron stars is studied with matter both in the hadronic phase as well as in the mixed phase of hadronic matter and strange quark matter.

• In our models, the dominant early-stage cooling process is neutrino emission via the direct Urca process.
• As a consequence, the cooling curves fall too fast compared to observations.
• However, when superfluidity is included, the cooling of the neutron stars is significantly slowed down.