Sgr A* exhibits a white-noise-like flat variability regime in its 340 GHz flux on timescales below 2.3 to 6.3 minutes, transitioning to red-noise-like behavior at longer timescales, with no evidence for narrow periodic signals.
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ELT/MICADO is projected to enable the first quantitative constraints on the dark cluster of stellar compact objects in the Galactic Center through variability and astrometric searches.
citing papers explorer
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Short timescale variation in the submillimeter flux of Sagittarius A*
Sgr A* exhibits a white-noise-like flat variability regime in its 340 GHz flux on timescales below 2.3 to 6.3 minutes, transitioning to red-noise-like behavior at longer timescales, with no evidence for narrow periodic signals.
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Constraining the Galactic Center Dark Cluster with ELT/MICADO Observations
ELT/MICADO is projected to enable the first quantitative constraints on the dark cluster of stellar compact objects in the Galactic Center through variability and astrometric searches.