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| Paper: |
Reconstructing the Past Light Curve of Sgr A* With X-ray Echoes |
| Volume: |
528, New Horizons in Galactic Center Astronomy and Beyond |
| Page: |
227 |
| Authors: |
Chuard, D.; Terrier, R.; Goldwurm, A.; Clavel, M.; Soldi, S.; Morris, M. R.; Ponti, G. |
| Abstract: |
X-ray echoes at the Galactic centre allow the reconstruction of the past activity of Sgr A*, provided that the line-of-sight positions of the reflecting clouds are known. Using a Monte Carlo model to place constraints on the positions of 8 clouds, we show, for the first time at a 5-sigma level, that Sgr A* experienced two powerful outbursts in the past centuries: a short one ∼85 yr back, and a longer one ∼240 yr ago. |
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