Vincent 1 ,2A. Zdziarski 2 and J. Ujazdowskie 4, Warsaw, Poland. The high-energy radiation from black-hole binaries may be due to the reprocessing of a lamp located on the black hole rotation axis and emitting X-rays.
The observed spectrum is made of three major components: We also determine the strength of the direct component. Our choice of parameters is adapted to a source showing an important thermal component. We are particularly interested in investigating the possibility to use the iron-line complex as a probe to constrain the binary spectrum hole spin. We computed in full general relativity the illumination of a thin accretion disk by a fixed X-ray lamp along the rotation axis.
We used the ATM21 radiative transfer code to binary spectrum the local, energy-dependent spectrum emitted along the disk as binary spectrum function of radius, emission angle and black hole spin.
We then ray traced this local spectrum to determine the final reprocessed spectrum as binary spectrum by a distant observer. We show the importance of the angle dependence of the total disk specific intensity spectrum emitted by the illuminated atmosphere binary spectrum the thermal disk emission is fully taken into account.
The disk flux, together with the X-ray flux from the lamp, determines the temperature and ionization structure of the atmosphere. High black hole spin implies high temperature in the inner disk regions, therefore, the emitted thermal disk spectrum fully covers the iron-line complex. As a result, instead of fluorescent iron emission line, we locally observe binary spectrum lines produced binary spectrum the hot disk atmosphere. Absorption lines are narrow and disappear after ray tracing the local spectrum.
Our results mainly highlight the importance of considering the angle dependence of the local spectrum when computing reprocessed spectra, as was already found in a recent study. The main new result of our work binary spectrum to show the importance of binary spectrum the thermal bump binary spectrum the spectrum, as this feature can change considerably the observed iron-line complex.
Thus, in particular for fitting black hole spins, the full spectrum, rather than only the reflected part, should be computed self-consistently. Data correspond to usage on the plateform after The current usage metrics is available hours after online publication and is updated daily on week days. Previous binary spectrum Next article. Metrics Show article binary spectrum. Services Articles citing this article CrossRef 4. Current usage metrics About article metrics Return to article.
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