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Ray-tracing in pseudo-complex General Relativity
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DOI：10.1093/mnras/stu833.png)
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Motivated by possible observations of the black hole candidate in the centre of our Galaxy and the galaxy M87, ray-tracing methods are applied to both standard General Relativity (GR) and a recently proposed extension, the pseudo-complex GR (pc-GR). The correction terms due to the investigated pc-GR model lead to slower orbital motions close to massive objects. Also the concept of an innermost stable circular orbit is modified for the pc-GR model, allowing particles to get closer to the central object for most values of the spin parameter a than in GR. Thus, the accretion disc, surrounding a massive object, is brighter in pc-GR than in GR. Iron K alpha emission-line profiles are also calculated as those are good observables for regions of strong gravity. Differences between the two theories are pointed out.
Keyword:
black hole physics
gravitation
celestial mechanics
galaxies: nuclei
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论文数:
7.0W
被引数:
25.0W
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