X-ray hiccups from Sagittarius A* observed by XMM-Newton - The second brightest flare and three moderate flares caught in half a day
D. Porquet, N. Grosso, P. Predehl, G. Hasinger, F. Yusef-Zadeh, B. Aschenbach, G. Trap, F. Melia, R. S. Warwick, A. Goldwurm, G. Bélanger, Y. Tanaka, R. Genzel, K. Dodds-Eden, M. Sakano and P. Ferrando
