New outbursts of the black hole candidate H1743-322/IGR J17464-3213 observed by INTEGRAL

On March 2003, INTEGRAL/IBIS detected an outburst from a new source, IGR J17464-3213, that turned out to be a HEAO-1 transient, namely H1743-322. Its fux decayed below the RXTE PCA sensitivity limit in November 2003. On July 3, 2004 the source was again detected by RXTE/PCA reaching an intensity of 70 mCrab in the 2-10 keV band. Another outburst was observed in August 2005. A multiwavelength observation campaign was performed, during the three outbursts, by INTEGRAL, RXTE and CHANDRA satellites and the radio telescopes VLA and ATCA. INTEGRAL data show a good coverage during the July 2004 and August 2005 outbursts. We show here the spectral and temporal variability study performed on the data collected by INTEGRAL.