TITLE: GCN CIRCULAR NUMBER: 11748 SUBJECT: GRB110213B: X-ray afterglow confirmation DATE: 11/02/18 09:11:45 GMT FROM: Raffaella Margutti at U. di Milano Bicocca R. Margutti, (INAF-OAB), Nakahira (AGU), M. Morii, N. Kawai (Tokyo Tech), H. Negoro (Nihon U.) and A. Melandri (INAF-OAB) report on behalf of the Swift-XRT and MAXI team: The Swift-XRT conducted a second observation of GRB 110213B (Negoro et al. GCN. Circ. 11716), gathering 4.9 ks of data between T0+250ks and T0+275 ks. Source B reported by Nakahira (GCN Circ. 11725) has faded to a level of 0.005 +/- 0.001 count/sec, with a power-law decay index of alpha= -1.4 +/- 0.3. This source is thus confirmed as the X-ray afterglow of GRB 110213B. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00020157. This circular is an official product of the Swift-XRT team.