Conveners
Relativistic effects in spectra and polarization from black hole accretion disks
- Vladimir Karas (Astronomical Institute, Czech Academy of Sciences)
Relativistic effects in spectra and polarization from black hole accretion disks
- Vladimir Karas (Astronomical Institute, Czech Academy of Sciences)
Relativistic effects in spectra and polarization from black hole accretion disks
- Vladimir Karas (Astronomical Institute, Czech Academy of Sciences)
Relativistic effects in spectra and polarization from black hole accretion disks
- Vladimir Karas (Astronomical Institute, Czech Academy of Sciences)
Relativistic effects in spectra and polarization from black hole accretion disks
- Vladimir Karas (Astronomical Institute, Czech Academy of Sciences)
Description
Astrophysical black holes are often characterized by only two parameters, namely, mass and angular momentum. However, cosmic black holes are not completely isolated. Instead, they interact with their gaseous and stellar environment, and so the astrophysically realistic models may require additional information to describe the spacetime metric and to determine the state of the surrounding gaseous environment. We will review a fruitful approach to study variety of electromagnetic signatures from accretion disks in strong gravity regime. Transfer functions can be introduced, pre-computed, and then employed to generate model spectra and to fit them to the electromagnetic signal in X-rays. We have been developing this approach to analyse spectra and light curves and to predict the polarimetric properties. Other groups adopt different schemes which we will briefly outline, too. Models can be finally tested with the current and upcoming observations. Some of recent results challenge the expectations based on standard accretion scenarios.
