0720027

On Jan. 22 2009 a huge outburst of 1E1547.0-5408 commenced accompanied by strongly increased short-duration burst activity. INTEGRAL detected emission up to ~150 keV during 2 ToO observations one performed for about 100 ks on Jan. 24-25 2009 and a second for 600 ks from Jan. 28 to Feb. 8 2009.Till this outburst no INTEGRAL detection could be established. Now for the first time INTEGRAL discovered the turn-on of hard (photon index ~ 1.3 pulsed) emission. During the second INTEGRAL ToO the source was still (very) bright between 20 and 150 keV with no signs of fading. Its flux decreased only 30% compared to the first ToO measurement. The biggest question therefore is whether this hard tail will fade or will remain stable like the persistent hard X-ray emission from the other three AXPs showing hard spectral tails? Therefore we propose to reobserve 1E1547.0-5408 for 2 revolutions (~400 ks) during AO7. [truncated! Please see actual data for full text]