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Cooling of Neutron Stars

Cooling of Neutron Stars. Hovik Grigorian Dubna, JINR. Helmholtz International Summer School Dence matter in HIC and Astrophysics. Dubna 2008. Cooling of H OT Neutron Stars Lecture 1. Schematic introduction of simulations BOLTZMANN EQUATION IN CURVED SPACE – TIME

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Cooling of Neutron Stars

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  1. CoolingofNeutron Stars Hovik Grigorian Dubna, JINR Helmholtz International Summer School Dence matter in HIC and Astrophysics Dubna 2008

  2. Coolingof HOT Neutron StarsLecture 1 • Schematic introduction of simulations • BOLTZMANN EQUATION IN CURVED SPACE – TIME • HEAT TRANSPORT AND NEUTRINO DIFFUSION • HOT NEUTRON AND QUARK STAR EVOLUTION • QUASI-EQUILIBRATE EVOLUTION OF COMPACT OBJECT • Hot COMPACT STARS

  3. Phase Diagram & CoolingSimulations

  4. Coolingof Hybrid Neutron StarsLecture 2 • Configurations of Hybrid stars • Cooling processes in QM • Crust, SC Gaps and ... • Time Evolution of Surface Temperature • Constraints from Observations • Summary & Discussion

  5. Hybrid Configurations

  6. CoolingMechanism

  7. Direct URCA in Hadron Matter

  8. DU constraint

  9. HS with different structure

  10. SC pairinggaps

  11. Crust Model

  12. Surface Temperature & Age Data Slow Coolers Intermediate Coolers Fast Coolers

  13. Cooling of light stars Models

  14. C74:025801,2006

  15. The most of pathologies of hadronic stars are descendible SomeAnomalies

  16. Why DU is a problem?

  17. Temperature in the Star Interior

  18. Temperature Age – LogNLogSHybrid Stars Cooling

  19. Coolingof HS with Single flavor QM • How to distinguish the different types of Hybrid star models from cooling evolution?

  20. Mass Distribution of NS Could the Mass Distribution of NSs be exstracted from the cooling models?

  21. ExtractedMass Distribution

  22. Summary • Cooling of NSs is one of testing schemes for High density matter EoS • Mass distribution of NS is extracted from the cooling model • Cooling data allowed existence of HS even with one flaver QM • DU can be consided as a problem

  23. Open Questions & Discussian • Do Hybrid NSs an alternative or the solution of problems of compact stars? • Do for all constraints exist a valid HNS model? • Can magnetic field and surface heating modify the main conclusions on cooling of NS? • Is the mass distribution of NSs an obsorvable?

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