Speaker
Barbora Bílá
(Silesian University in Opava)
Description
Relativistic accreting stars often exhibit strong quasi-periodic oscillations in their radiation. In our study, we examined the modulation of X-ray radiation from the neutron star boundary layer through the obscuration of an oscillating, thick inner accretion flow (Torok et al., ApJ, 2025). To do this, we adopted the full relativistic ray-tracing code LSD of Bakala et al. (A&A, 2015). We found that the investigated mechanism adequately explains the high amplitudes of the observed rapid neutron star X-ray variability. Further, it reproduces the differences observed in this variability between neutron star and black hole cases. Here, we briefly discuss these results and present several extensions.
Author
Barbora Bílá
(Silesian University in Opava)
Co-authors
Debora Lančová
(Nicolas Copernicus Astronomical Centre, Warsaw, Poland, Institute of Physics, Silesian University in Opava, Czech Republic)
Eva Sramkova
(Silesian University in Opava, Bezrucovo namesti 13, CZ 746 01 Opava)
Gabriel Török
(Silesian University in Opava)
Kateřina Klimovičová
(Silesian university in Opava)
Martin Urbanec
(Silesian University in Opava)
Monika Matuszková
(Silesian University in Opava)
Rene Sprna
(SLU - Institute of Physics in Opava)
Tomáš Stanovský
(Silesian University in Opava)