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
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
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.