Münster 2011 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 25: Nukleare Astrophysik II
HK 25.1: Gruppenbericht
Dienstag, 22. März 2011, 16:30–17:00, HS3
Composition, structure, and thermal evolution of magnetized and rotating compact stars. — •Rodrigo Picanco Negreiros1, Stefan Schramm1, Veronica Dexheimer2, Fridolin Weber3, Igor Mishustin1,4, and Torsten Schuerhoff1 — 1Frankfurt Institute for Advanced Studies — 2Gettysburg College — 3San Diego State University — 4The Kurchatov Institute
In this work we will report our findings on our research on the composition, structure and thermal evolution of compact objects. We use observed data of compact stars to probe matter at high-density and low temperatures. In our work we investigate the three major fronts of compact star research: the microscopic composition, the macroscopic structure, and the thermal evolution. Our theoretical predictions are compared to observed data, which allows us to assess the validity of the models. We explore a variety of microscopic models, with special attention given to a particular hybrid star model, in which the quark and hadronic phase of the star is described by a Flavor SU(3) sigma-omega model. We also consider the effects of a magnetic field on the microscopic composition, and the consequences to the structure and thermal evolution of the star. Since compact stars may be rotating very rapidly, we also investigate the effects of rotation on the structure of these objects. Furthermore, the changes in structure that follow the spin evolution of the star is also investigated. We also show our results for the thermal evolution of spinning down neutron stars. Finally we discuss the possible connection between differentially rotating quark stars and Central Compact Objects.