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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1915 SUBJECT: GRB 030227 optical afterglow DATE: 03/03/03 08:01:13 GMT FROM: Javier Gorosabel at LAEFF-INTA, Madrid <jgu@laeff.esa.es> J. Gorosabel (IAA-CSIC/STScI), A.J. Castro-Tirado, D. Reverte, J. Vílchez (IAA-CSIC), J.M. Castro Cerón (STScI), A. de Ugarte Postigo, S. Guziy (IAA-CSIC) and S. Martínez (Univ. de Valencia) report: "We have obtained a second epoch observation covering the INTEGRAL error box for GRB 030227 (Gotz et al. GCN Circ. 1895, 1896) with the 2.5 m Isaac Newton Telescope at the Observatorio del Roque de los Muchachos (Canary Islands, Spain). Three R-band frames (600 s exposure time each) have been obtained on Feb 28.95 UT. Within the X-ray source error box given by XMM-Newton (Loiseau et al. GCN Circ. 1901), the object suggested by Castro-Tirado et al. (GCN Circ. 1904) as a possible afterglow candidate with R = 23.3 (this value supersedes the one given in GCN Circ. 1904) is not detected down to R = 24.2. This confirms its relationship to GRB 030227, also proposed by Soderberg et al. (GCN Circ. 1906) and Berger et al. (GCN Circ. 1910)." This message can be quoted.
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