X-ray emission from hot accretion flows
We developed a model for a precise study of spectral formation in hot accretion flows (ADAFs). We compare predictions of the model with X-ray observations of accreting black holes and we find a good agreement with black hole binaries observed below 1 per cent of the Eddington luminosity. On the other hand, we note large discrepancies between the standard ADAF model and AGNs observed at such luminosities. We find that the model can be reconciled with the observational data for AGNs if relevant hadronic processes (in particular, production of relativistic electrons through charged pions decay) are taken into account.
The X-ray Universe 2014
- Pub Date:
- July 2014
- Astrophysics - High Energy Astrophysical Phenomena
- To be published in "Multiwavelength AGN surveys and studies", Proceedings of IAU Symposium No. 304, 2013, eds. A. Mickaelian, F. Aharonian, D. Sanders