Top panels: Suzaku broad-band spectrum before (left panel) and after (right panel) the 2008 torque reversal. Blue points denote XIS data (0.5−10 keV), PIN data points are in red (14−70 keV) and GSO in purple (50−70 keV and 50−100 keV, respectively). The residuals after fitting only the continuum model are shown in the middle panel, with no line emission and cyclotron line feature included. The bottom panel shows the residuals after fitting the line complex at  ~1 keV, the  ~6.5 keV iron line and the  ~37 keV cyclotron line (see Table 1 for a list of fitted parameters). A zoom of the region of the line complex at  ~1 keV is also shown for clarity.