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IGRJ17361-4441 is a newly discovered INTEGRAL hard X-ray transient, locatedin the globular cluster NGC6388. We report here the results of the X-ray andradio observations performed with Swift, INTEGRAL, RXTE, and the AustraliaTelescope Compact Array (ATCA) after the discovery of the source on 2011 August11. In the X-ray domain, IGRJ17361-4441 showed virtually constant flux andspectral parameters up to 18 days from the onset of the outburst. Thebroad-band (0.5-100 keV) spectrum of the source could be reasonably welldescribed by using an absorbed power-law component with a high energy cut-off(N_H\simeq0.8x10^(22) cm^(-2), {\Gamma}\simeq0.7-1.0, and E_cut\simeq25 keV)and displayed some evidence of a soft component below \sim2 keV. No coherenttiming features were found in the RXTE data. The ATCA observation did notdetect significant radio emission from IGRJ17361-4441, and provided the moststringent upper limit (rms 14.1 {\mu}Jy at 5.5 GHz) to date on the presence ofany radio source close to the NGC6388 center of gravity. The improved positionof IGRJ17361-4441 in outburst determined from a recent target of opportunityobservation with Chandra, together with the X-ray flux and radio upper limitsmeasured in the direction of the source, argue against its association with theputative intermediate-mass black hole residing in the globular cluster and withthe general hypothesis that the INTEGRAL source is a black hole candidate.IGRJ17361-4441 might be more likely a new X-ray binary hosting an accretingneutron star. The ATCA radio non-detection also permits us to derive an upperlimit to the mass of the suspected intermediate massive black hole in NGC6388of <600 M\odot. This is a factor of 2.5 lower than the limit reportedpreviously.

IGRJ17361-4441: a possible new accreting X-ray binary in NGC6388