Solar disk observations. (a) and (c): EIT solar disk in the 195Å filter. (b) and (d): LASCO coronagraph C2 showing the two west CMEs when they are well developed in the field of view. White arrows in panel a indicate the AR 9948 near the west limb, and a transient coronal hole (CH) in the centre of the disk. In panel c, the white arrow indicates the region with two parallel bright ribbons after the filament eruption.