D 2008

On magnetic-field induced non-geodesic corrections to the relativistic precession QPO model

BAKALA, Pavel, Zdeněk STUCHLÍK, Eva ŠRÁMKOVÁ and Gabriel TÖRÖK

Basic information

Original name

On magnetic-field induced non-geodesic corrections to the relativistic precession QPO model

Authors

BAKALA, Pavel, Zdeněk STUCHLÍK, Eva ŠRÁMKOVÁ and Gabriel TÖRÖK

Edition

Sweden, COOL DISCS, HOT FLOWS: THE VARYING FACES OF ACCRETING COMPACT OBJECTS, 6 pp. 2008

Publisher

Wenner Gren Fdn; Swedish Res Council; Stockholm Univ

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10308 Astronomy

Confidentiality degree

není předmětem státního či obchodního tajemství

Organization unit

Faculty of Philosophy and Science in Opava

ISBN

978-0-7354-0584-4

ISSN

UT WoS

000260484300013

Keywords in English

neutron stars, X-rays, binaries, magnetic fields

Tags

, LC06014, MSM4781305903, sbornik

Tags

International impact

Links

LC06014, research and development project. MSM4781305903, plan (intention).
Změněno: 7/12/2020 10:43, Mgr. Pavlína Jalůvková

Abstract

V originále

Fitting the observational data of the twin peak kHz quasiperiodic oscillations (QPO) from low mass X-ray binaries (LMXBs) by the relativistic precession model gives a substantially higher neutron star mass estimate, M similar to 2 M-circle dot, than the"canonical value", M similar to 1.4 M-circle dot. Using a fully general relativistic approach we discuss the non-geodesic corrections to the orbital and epicyclic frequencies of slightly charged circularly orbiting test particles caused by the presence of a neutron star magnetic field. We show that consideration of such non-geodesic corrections can bring down the neutron star mass estimate and improve the quality of twin peak QPO data fits based on relativistic precession frequency relations.
Displayed: 25/12/2024 08:50