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@inproceedings{42089,
author = {Bakala, Pavel and Stuchlík, Zdeněk and Šrámková, Eva and Török, Gabriel},
address = {Sweden},
booktitle = {COOL DISCS, HOT FLOWS: THE VARYING FACES OF ACCRETING COMPACT OBJECTS},
keywords = {neutron stars, X-rays, binaries, magnetic fields},
language = {eng},
location = {Sweden},
isbn = {978-0-7354-0584-4},
publisher = {Wenner Gren Fdn; Swedish Res Council; Stockholm Univ},
title = {On magnetic-field induced non-geodesic corrections to the relativistic precession QPO model},
year = {2008}
}
TY - JOUR
ID - 42089
AU - Bakala, Pavel - Stuchlík, Zdeněk - Šrámková, Eva - Török, Gabriel
PY - 2008
TI - On magnetic-field induced non-geodesic corrections to the relativistic precession QPO model
PB - Wenner Gren Fdn; Swedish Res Council; Stockholm Univ
CY - Sweden
SN - 9780735405844
KW - neutron stars, X-rays, binaries, magnetic fields
N2 - 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.
ER -
BAKALA, Pavel, Zdeněk STUCHLÍK, Eva ŠRÁMKOVÁ and Gabriel TÖRÖK. On magnetic-field induced non-geodesic corrections to the relativistic precession QPO model. In \textit{COOL DISCS, HOT FLOWS: THE VARYING FACES OF ACCRETING COMPACT OBJECTS}. Sweden: Wenner Gren Fdn; Swedish Res Council; Stockholm Univ, 2008, 6 pp. ISBN~978-0-7354-0584-4.
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