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Cooling of Neutron Stars

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Presentation on theme: "Cooling of Neutron Stars"— Presentation transcript:

1 Cooling of Neutron Stars
Hovik Grigorian Dubna, JINR Helmholtz International Summer School Dence matter in HIC and Astrophysics Dubna 2008

2 Cooling of HOT Neutron Stars Lecture 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 & Cooling Simulations

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18 Cooling of Hybrid Neutron Stars Lecture 2
Configurations of Hybrid stars Cooling processes in QM Crust, SC Gaps and ... Time Evolution of Surface Temperature Constraints from Observations Summary & Discussion

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21 Hybrid Configurations

22 Cooling Mechanism

23 Direct URCA in Hadron Matter

24 DU constraint

25 HS with different structure

26 SC pairing gaps

27 Crust Model

28 Surface Temperature & Age Data
Slow Coolers Intermediate Coolers Fast Coolers

29 Cooling of light stars Models

30 C74:025801,2006

31 The most of pathologies of hadronic stars are descendible
Some Anomalies

32 Why DU is a problem?

33 Temperature in the Star Interior

34 Temperature Age – LogN LogS Hybrid Stars Cooling

35 Cooling of HS with Single flavor QM
How to distinguish the different types of Hybrid star models from cooling evolution?

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

37 Extracted Mass Distribution

38 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

39 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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