Fragments of the past activity of Sgr A* inferred from X-ray echoes in Sgr C
Proceedings article published in 2017 by
D. Chuard,
R. Terrier,
A. Goldwurm,
S. Soldi,
M. Clavel 
,
M. Morris,
G. Ponti,
M. Walls,
M. Chernyakova
,
M. Morris,
G. Ponti,
M. Walls,
M. Chernyakova
