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. |
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@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.
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