For a massive scalar field around a charged black hole, the greybody factor falls as the field mass rises, consistent between WKB and rigorous bound methods.
Modeling the motion of a bright spot in jets from black holes M87* and SgrA*
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abstract
We study the general relativistic motion of a bright spot in a jet from an accreting black hole. The corresponding lensed images of the moving bright spot are calculated numerically in discrete time intervals along the bright spot trajectory in the Kerr space-time framework. As representative examples, we consider the cases of supermassive black holes SgrA* and M87*. Astrophysical observations of the moving bright spots in the jets from black holes provides the unique possibility for the verification of different gravitation theories in the strong field limit.
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gr-qc 1years
2025 1verdicts
UNVERDICTED 1representative citing papers
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Greybody Factor for massive scalar field in charged black hole
For a massive scalar field around a charged black hole, the greybody factor falls as the field mass rises, consistent between WKB and rigorous bound methods.