Variability of Black-Hole Binary Sources, and Lense-Thirring Orbital Precession

Conference paper

Variability of Black-Hole Binary Sources, and Lense-Thirring Orbital Precession

Karas, V.; Semerák, O.; de Felice, F.

In: Nonlinear Gravitodynamics: The Lense-Thirring Effect, ed. R. Ruffini, C. Sigismondi, World Scientific, Singapore, pp. 282-287 (2003)

doi ↗ link ↗

Abstract

We discuss a possibility that observed radiation from active galactic nuclei (AGN) can be visibly modulated by collisions between stars (or secondary black holes) and an accretion disc around a central black hole. It is proposed that material swept out of the disc partly obscures the innermost region of the disc, while contributing by its own radiation. Under suitable circumstances, an individual orbiter can produce periodic modulation. If the central black hole is rotating and the companion star is at a low orbit, the Lense-Thirring orbital precession will show up in the signal and parameters of the central black hole can be thus determined.

Note

ISBN: 978-981-238-347-1

Institute authors

Semerák, Oldřich

Supported by

GACR 202/96/0206 — Relativistic physics and astrophysics
GAUK 230/1996 — Relativistická teorie gravitace, astrofyzika a kosmologie

BibTeX

@inproceedings{UTF772,
  author        = {Karas, V. and Semerák, O. and de Felice, F.},
  title         = {{Variability of Black-Hole Binary Sources, and Lense-Thirring Orbital Precession}},
  booktitle     = {Nonlinear Gravitodynamics: The Lense-Thirring Effect},
  editor        = {R. Ruffini, C. Sigismondi},
  publisher     = {World Scientific},
  address       = {Singapore},
  pages         = {282-287},
  year          = {2003},
  month         = {5},
  doi           = {10.1142/9789812564818\_0023},
  url           = {https://www.worldscientific.com/doi/10.1142/9789812564818\_0023},
  note          = {ISBN: 978-981-238-347-1},
}