SIMBAD references

R. Gonzalez-Riestra, M. Guainazzi, N. Loiseau, P. M. Rodriguez- Pascual, M. Santos-Lleo, N. Schartel, B. Juarez, R. Perez-Martinez, and M. Gilomo, XMM-Newton Science Operations Centre, report that an XMM-Newton target-of-opportunity observation of GRB 030227 on Feb. 27.7 UT detected a bright source at R.A. = 4h57m33s.3, Decl. = +20o29'04" (equinox 2000.0; uncertainty about 4") with the EPIC-pn and MOS cameras during a 49000-s exposure. The source faded (in the band 0.2-5 keV) from 0.15 to 0.07 EPIC-pn counts/s during the observation. The spectrum is consistent with a hydrogen column density of 3 x 10**21 cm**-2. The observed flux in the range 2-10 keV is 5.5 x 10**-13 erg cm**-2 s**-1.