SIMBAD references

P. Dubath, INTEGRAL Science Data Center and Geneva Observatory; M. Revnivtsev, Space Research Institute, Moscow, and Max-Planck- Institut fuer Astrophysik, Garching; P. Goldoni, Centre d'Etude Atomique and Service d'Astrophysique, Saclay; A. von Kienlin, Max- Planck-Institut fuer Extraterrestrische Physik; N. Lund, Danish Space Research Institute, Copenhagen; S. Grebenev, Space Research Institute, Moscow; and E. Kuulkers, Research and Science Support Department, ESTEC, Noordwijk, report a new x-ray outburst of the transient source XTE J1550-564 (cf. IAUC 7010), detected with the IBIS and SPI instruments onboard the INTEGRAL satellite. Between Mar. 24.2 and 25.1 UT, the average fluxes were about 150 mCrab in the energy band 15-40 keV and about 250 mCrab in the band 40-100 keV. The photon index of the spectrum is about 1.5 in the energy band 20-150 keV. Observations at other wavelengths are encouraged.