INTEGRAL observations of GRB 070311 (Guidorzi+, 2007)

GRB 070311 triggered the INTEGRAL/IBAS in IBIS/ISGRI data on 2007 March 11 at 01 52 50 UT and it was localised at RA=05 50 09.86, Dec=+03 22 29.3, with an error radius of 2.5' (Mereghetti et al., 2007GCN..6189....1M). At the time of the burst, Swift/BAT was pointing in almost the opposite direction and it would have been in the field of view two minutes later. The corresponding flux at the position of the burst, in a 300s image beginning 130s after the INTEGRAL trigger, is negligible. (1 data file).