D 2007

Neutron star equation of state and QPO observations

BAKALA, Pavel, Petr ČERMÁK, Gabriel TÖRÖK, Martin URBANEC, Zdeněk STUCHLÍK et. al.

Basic information

Original name

Neutron star equation of state and QPO observations

Authors

Edition

Opava, Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, p. 523-531, 8 pp. 2007

Publisher

Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10308 Astronomy

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

Organization unit

Faculty of Philosophy and Science in Opava

ISBN

978-80-7248-419-5

Keywords in English

Neutron stars, genetic algorithm, X-ray variability, theory, observations

Tags

Tags

International impact

Links

LC06014, research and development project. MSM4781305903, plan (intention).
Změněno: 3/12/2020 14:19, Mgr. Pavlína Jalůvková

Abstract

V originále

Assuming a resonant origin of the twin peak quasiperiodic oscillations observed in the X-ray neutron star binary systems, we apply a genetic algorithmmethod for selection of neutron star models. Each neutron star model is characterized by the equation ofstate (EOS), rotation frequency and central energy density. These determine the spacetime structure governing geodesic motion and position dependent radial and vertical epicyclic oscillations related to the stable circular geodesics. For the eliminationwe use the advanced genetic algorithm. As a fitness function we use correspondence between the observed and calculated pairs of eigenfrequencies.