TITLE: GCN CIRCULAR NUMBER: 6111 SUBJECT: GRB 070219: Swift/UVOT Upper limits DATE: 07/02/19 14:14:41 GMT FROM: Alice Breeveld at MSSL-UCL A. Breeveld (MSSL/UCL) and T. Sakamoto (NASA/ORAU) report on behalf of the Swift UVOT team: The Swift/UVOT observed the field of GRB 070219 starting 68s after the BAT trigger (Sakamoto et al. 2007, GCN Circ. 6104). We do not find any source, in any of the UVOT observations, inside the XRT error circle. The 3-sigma upper limits for detecting a source inside the XRT error circle in the co-added frames are: Filter T_start T_stop Exp(s) Mag(3-sigma UL) -------------------------------------------------------- V 68 18502 2032 20.3 B 670 6909 432 20.4 U 646 13201 980 20.4 UVW1 622 12659 1160 21.0 UVM2 598 18983 1627 21.5 UVW2 698 17588 1356 21.5 White 87 7114 618 20.7 The values quoted above are not corrected for the expected Galactic extinction corresponding to a reddening of E(B-V) = 0.035 towards the direction of the burst (Schlegel et al. 1998)