SIMBAD references

INTEGRAL discovered a new hard X-ray transient, IGR J17361-4441, during the observations performed from 2011-08-11 22:45 to 2011-08-15 07:39 UTC.

The source is detected in the IBIS/ISGRI mosaic at a preliminary significance level of 8 in the 20-40 keV energy band. The corresponding flux is 7±1 mCrab (68% c.l., only statistical).

The best determined source position is at RA=264.046; DEC=-44.689 (J2000)

with a 90% confinement radius of 3 arcmin. Within the error box, we notice the presence of the globular cluster NGC 6388.

The IBIS/ISGRI spectrum (exposure time 162 ks) can be well described (kh²_red/d.o.f.=0.7/9)

by a a power-law with photon index G=2.6^+1.0_-0.7 (90% c.l.). The 20-100 keV flux estimated from the spectral fit is ∼9.7e-11 erg/s/cm2.

Unfortunately, IGR J17361-4441 was located out of the JEM-X field of view.

Follow-up observations are encouraged to unveil the nature of this transient.