Top: JEM-X and IBIS light curves of the three flares in the 3–10 keV and 30–60 keV band with a 10 s and 5 s time resolution, respectively. The y-axis for the IBIS data is shifted up for readability. Bottom: Hardness ratio light curve with a time resolution of 60 s. The hardness ratio is defined as HR = (H − S)/(H + S) for 30–60 keV and 60–120 keV. The gap starting around 1900 s is due to a repointing of INTEGRAL.