Physics
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ragt.meet...29b&link_type=abstract
In Proceedings of RAGtime 6/7: Workshops on black holes and neutron stars, Opava, 16-18/18-20 September, 2004/2005; S. Hledík an
Physics
2
Scientific paper
The current paradigm of high energy spectroscopy tells us that light emitted from a wide variety of objects has its origin close to the black hole event horizon. As such, these photons are subject to general relativistic effects such as light-bending, gravitational lensing and redshift, time-dilation, etc. These gravitational effects are well-understood from a theoretical standpoint and therefore provide a natural mechanism to test the properties of strong gravitational fields. To this end, we have developed a new (semi-analytic) strong gravity code, capable of describing the contribution of photons that perform multiple orbits of the hole. We apply this code to a simple Keplerian accretion disk in order to understand the role played by the angular emissivity, black hole spin and higher order images in forming the line profile.
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