D
2007
Dipole magnetic field on a Schwarzschild background and related epicyclic frequencies
BAKALA, Pavel, Zdeněk STUCHLÍK, Eva ŠRÁMKOVÁ and TOROK
Basic information
Original name
Dipole magnetic field on a Schwarzschild background and related epicyclic frequencies
Edition
Opava, Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, p. 1-10, 10 pp. 2007
Publisher
Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky
Other information
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
Keywords in English
X-ray, neutron stars, binaries, accretion discs, QPOs, magnetic field
Tags
International impact
Links
LC06014, research and development project. MSM4781305903, plan (intention).
V originále
Several models of the X-ray ux modulation observed in the low-mass X-ray binaries (LMXBs), in particular the neutron star LMXBs, deal with Keplerian and epicyclic frequencies of geodesic orbital motion. We discuss non-geodesic corrections to the orbitaland epicyclic frequencies of charged test particles caused by presence of a neutron star magnetic field. The magnetic field is considered to be generated by an intrinsic static dipole magnetic moment of a neutron star represented by the Schwarzschild geometry. We present fully general relativistic formulae for the orbital and epicyclic frequencies, obtained using the appropriate equations governing perturbations of the circular motion. The most significant correction arises for the radial epicyclic frequency. The zero point of the corrected radial epicyclic frequency defines radius of the effective innermost stable circular orbit (EISCO)."
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