Detailed Information on Publication Record
2008
On magnetic-field induced non-geodesic corrections to the relativistic precession QPO model
BAKALA, Pavel, Zdeněk STUCHLÍK, Eva ŠRÁMKOVÁ and Gabriel TÖRÖKBasic information
Original name
On magnetic-field induced non-geodesic corrections to the relativistic precession QPO model
Authors
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
Proceedings paper
Field of Study
10308 Astronomy
Confidentiality degree
is not subject to a state or trade secret
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
Tags
International impact
Links
LC06014, research and development project. MSM4781305903, plan (intention).
Changed: 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.