Oscillations of electric current-carrying string loop near a
Schwarzschild black hole immersed in an asymptotically uniform
magnetic field

D 2014

Oscillations of electric current-carrying string loop near a Schwarzschild black hole immersed in an asymptotically uniform magnetic field

KOLOŠ, Martin, Zdeněk STUCHLÍK a Arman TURSUNOV

Základní údaje

Originální název

Oscillations of electric current-carrying string loop near a Schwarzschild black hole immersed in an asymptotically uniform magnetic field

Autoři

KOLOŠ, Martin, Zdeněk STUCHLÍK a Arman TURSUNOV

Vydání

Opava, Proceedings of RAGtime 14-16: Workshops on black holes and neutron stars, od s. 159-170, 22 s. 2014

Nakladatel

Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10308 Astronomy

Utajení

není předmětem státního či obchodního tajemství

Organizační jednotka

Filozoficko-přírodovědecká fakulta v Opavě

ISBN

978-80-7510-126-6

ISSN

Klíčová slova anglicky

string loop oscillations; X-ray variability; HF QPO observations

Štítky

RAGtime, UF

Příznaky

Mezinárodní význam

Návaznosti

EE2.3.20.0071, projekt VaV. GB14-37086G, projekt VaV.

Změněno: 26. 1. 2021 15:16, Mgr. Pavlína Jalůvková

Anotace

V originále

We study oscillations of an electric current-carrying and axially-symmetric string loop in the vicinity of a Schwarzschild black hole embedded in an asymptotically uniform magnetic field. The radial profiles of frequencies of small oscillations of the string loop around stable equilibrium points are given for the radial and vertical harmonic modes that are relevant also in the quasi-periodic stages of the oscillations. Their properties in dependence on the uniform magnetic field intensity and angular momentum parameters of the string loops are determined. We examine the relevance of resonant phenomena of the radial and vertical string-loop oscillations at their frequency ratio 3 : 2. The oscillatory frequencies of the string loops are compared with thefrequencies of high-frequency quasi-periodic oscillations (HF QPOs) observed in the microquasars GRS 1915+105, XTE 1550-564, GRO 1655-40 containing a black hole. We have demonstrated that the influence of the uniform magnetic field does

Citovat

KOLOŠ, Martin, Zdeněk STUCHLÍK a Arman TURSUNOV. Oscillations of electric current-carrying string loop near a Schwarzschild black hole immersed in an asymptotically uniform magnetic field. In Proceedings of RAGtime 14-16: Workshops on black holes and neutron stars. Opava: Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky, 2014, s. 159-170, 22 s. ISBN 978-80-7510-126-6.

@inproceedings{46042,
   author = {Kološ, Martin and Stuchlík, Zdeněk and Tursunov, Arman},
   address = {Opava},
   booktitle = {Proceedings of RAGtime 14-16: Workshops on black holes and neutron stars},
   keywords = {string loop oscillations; X-ray variability; HF QPO observations},
   language = {eng},
   location = {Opava},
   isbn = {978-80-7510-126-6},
   pages = {159-170},
   publisher = {Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky},
   title = {Oscillations of electric current-carrying string loop near a Schwarzschild black hole immersed in an asymptotically uniform magnetic field},
   year = {2014}
}

TY  - JOUR
ID  - 46042
AU  - Kološ, Martin - Stuchlík, Zdeněk - Tursunov, Arman
PY  - 2014
TI  - Oscillations of electric current-carrying string loop near a Schwarzschild black hole immersed in an asymptotically uniform magnetic field
PB  - Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky
CY  - Opava
SN  - 9788075101266
KW  - string loop oscillations
KW  - X-ray variability
KW  - HF QPO observations
N2  - We study oscillations of an electric current-carrying and axially-symmetric string loop in the vicinity of a Schwarzschild black hole embedded in an asymptotically uniform magnetic field. The radial profiles of frequencies of small oscillations of the string loop around stable equilibrium points are given for the radial and vertical harmonic modes that are relevant also in the quasi-periodic stages of the oscillations. Their properties in dependence on the uniform magnetic field intensity and angular momentum parameters of the string loops are determined. We examine the relevance of resonant phenomena of the radial and vertical string-loop oscillations at their frequency ratio 3 : 2. The oscillatory frequencies of the string loops are compared with thefrequencies of high-frequency quasi-periodic oscillations (HF QPOs) observed in the microquasars GRS 1915+105, XTE 1550-564, GRO 1655-40 containing a black hole. We have demonstrated that the influence of the uniform magnetic field does
ER  -

KOLOŠ, Martin, Zdeněk STUCHLÍK a Arman TURSUNOV. Oscillations of electric current-carrying string loop near a Schwarzschild black hole immersed in an asymptotically uniform magnetic field. In \textit{Proceedings of RAGtime 14-16: Workshops on black holes and neutron stars}. Opava: Slezská univerzita v Opavě, Filozoficko-přírodovědecká fakulta, Ústav fyziky, 2014, s.~159-170, 22 s. ISBN~978-80-7510-126-6.

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