Power density spectra of modes of orbital motion in strongly
curved space-time: obtaining the observable signal

J 2014

Power density spectra of modes of orbital motion in strongly curved space-time: obtaining the observable signal

ABRAMOWICZ, Marek, Pavel BAKALA, Kateřina GOLUCHOVÁ, Eva ŠRÁMKOVÁ, Gabriel TÖRÖK et. al.

Basic information

Original name

Power density spectra of modes of orbital motion in strongly curved space-time: obtaining the observable signal

Authors

ABRAMOWICZ, Marek, Pavel BAKALA, Kateřina GOLUCHOVÁ, Eva ŠRÁMKOVÁ, Gabriel TÖRÖK, Martin WILDNER, Dalibor WZIENTEK, Michal DOVČIAK, Vladimír KARAS, Grzegorz MAZUR and Frédéric H. VINCENT

Edition

Monthly Notices of the Royal Astronomical Society, GB - Spojené království Velké Británie a, 2014, 0035-8711

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Organization unit

Faculty of Philosophy and Science in Opava

DOI

http://dx.doi.org/10.1093/mnras/stu076

UT WoS

000334114000042

Keywords in English

accretion, accretion discs; black hole physics; gravitation; methods: numerical; X-rays: binaries

Links

EE2.3.20.0071, research and development project. GPP209/12/P740, research and development project.

Změněno: 27/4/2021 09:43, Jan Vlha

Abstract

V originále

High-frequency quasi-periodic oscillations (HF QPOs) appear in the X-ray variability of several accreting low-mass binaries. In a series of works, it was suggested that these QPOs may have connection to inhomogeneities orbiting close to an inner edge ofthe accretion disc. In this paper, we explore the appearance of an observable signal generated by small radiating circular hotspots moving along quasi-elliptic trajectories close to the innermost stable circular orbit in the Schwarzschild space?time. Ourconsideration takes into account the capabilities of observatories that have been operating in the past two decades represented by the Rossi X-ray Timing Explorer (RXTE) and the proposed future instruments represented by the Large Observatory for X-rayTiming (LOFT). For these purposes, we choose such model parameters that lead to light curves comparable to those observed in Galactic black hole sources, in particular the microquasar GRS 1915+105. We find that when a weak signal correspo

Citovat

ABRAMOWICZ, Marek, Pavel BAKALA, Kateřina GOLUCHOVÁ, Eva ŠRÁMKOVÁ, Gabriel TÖRÖK, Martin WILDNER, Dalibor WZIENTEK, Michal DOVČIAK, Vladimír KARAS, Grzegorz MAZUR and Frédéric H. VINCENT. Power density spectra of modes of orbital motion in strongly curved space-time: obtaining the observable signal. Monthly Notices of the Royal Astronomical Society. GB - Spojené království Velké Británie a, 2014, vol. 439, No 2, p. 1933-1939. ISSN 0035-8711. Available from: https://dx.doi.org/10.1093/mnras/stu076.

@article{42763,
   author = {Abramowicz, Marek and Bakala, Pavel and Goluchová, Kateřina and Šrámková, Eva and Török, Gabriel and Wildner, Martin and Wzientek, Dalibor and Dovčiak, Michal and Karas, Vladimír and Mazur, Grzegorz and Vincent, Frédéric H.},
   article_location = {GB - Spojené království Velké Británie a},
   article_number = {2},
   doi = {http://dx.doi.org/10.1093/mnras/stu076},
   keywords = {accretion, accretion discs; black hole physics; gravitation; methods: numerical; X-rays: binaries},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {Power density spectra of modes of orbital motion in strongly curved space-time: obtaining the observable signal},
   url = {https://academic.oup.com/mnras/article/439/2/1933/1016727},
   volume = {439},
   year = {2014}
}

TY  - JOUR
ID  - 42763
AU  - Abramowicz, Marek - Bakala, Pavel - Goluchová, Kateřina - Šrámková, Eva - Török, Gabriel - Wildner, Martin - Wzientek, Dalibor - Dovčiak, Michal - Karas, Vladimír - Mazur, Grzegorz - Vincent, Frédéric H.
PY  - 2014
TI  - Power density spectra of modes of orbital motion in strongly curved space-time: obtaining the observable signal
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 439
IS  - 2
SP  - 1933-1939
EP  - 1933-1939
SN  - 00358711
KW  - accretion, accretion discs
KW  - black hole physics
KW  - gravitation
KW  - methods: numerical
KW  - X-rays: binaries
UR  - https://academic.oup.com/mnras/article/439/2/1933/1016727
N2  - High-frequency quasi-periodic oscillations (HF QPOs) appear in the X-ray variability of several accreting low-mass binaries. In a series of works, it was suggested that these QPOs may have connection to inhomogeneities orbiting close to an inner edge ofthe accretion disc. In this paper, we explore the appearance of an observable signal generated by small radiating circular hotspots moving along quasi-elliptic trajectories close to the innermost stable circular orbit in the Schwarzschild space?time. Ourconsideration takes into account the capabilities of observatories that have been operating in the past two decades represented by the Rossi X-ray Timing Explorer (RXTE) and the proposed future instruments represented by the Large Observatory for X-rayTiming (LOFT). For these purposes, we choose such model parameters that lead to light curves comparable to those observed in Galactic black hole sources, in particular the microquasar GRS 1915+105. We find that when a weak signal correspo
ER  -

ABRAMOWICZ, Marek, Pavel BAKALA, Kateřina GOLUCHOVÁ, Eva ŠRÁMKOVÁ, Gabriel TÖRÖK, Martin WILDNER, Dalibor WZIENTEK, Michal DOVČIAK, Vladimír KARAS, Grzegorz MAZUR and Frédéric H. VINCENT. Power density spectra of modes of orbital motion in strongly curved space-time: obtaining the observable signal. \textit{Monthly Notices of the Royal Astronomical Society}. GB - Spojené království Velké Británie a, 2014, vol.~439, No~2, p.~1933-1939. ISSN~0035-8711. Available from: https://dx.doi.org/10.1093/mnras/stu076.

Detailed Information on Publication Record