General relativistic effects and the near-infrared and X-ray variability of Sgr A* I
Sebastiano D. von Fellenberg,
Gunther Witzel,
Michi Bauböck
et al.
Abstract:The near-infrared (NIR) and X-ray emission of Sagittarius A* shows occasional bright flares that are assumed to originate from the innermost region of the accretion flow. We identified 25 4.5 µm and 24 X-ray flares in archival data obtained with the Spitzer and Chandra observatories. With the help of general relativistic ray-tracing code, we modeled trajectories of "hot spots" and studied the light curves of the flares for signs of the effects of general relativity. Despite their apparent diversity in shape, a… Show more
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