TITLE: GCN CIRCULAR NUMBER: 11725 SUBJECT: GRB 110213B: Swift XRT observation DATE: 11/02/14 15:22:15 GMT FROM: Nobuyuki Kawai at Tokyo Tech S. Nakahira (AGU), N. Kawai, M. Morii (Tokyo Tech), and H. Negoro (Nihon U.) report on behalf of the MAXI team: Swift observed the field of GRB 110213B (Negoro et al., GCN Circ. 11716) centered at the refined MAXI/GSC position reported by Morii et al. (GCN Circ. 11720) for 2 ks from 2011-02-14T03:42:19 (T0+47 ks). We find three point sources in the XRT field of view: Source (R.A., Dec.) J2000 flux ------ ----------------------------------------------- ------- A (41.562 deg, +1.245 deg)= (02 46 15, +01 14 42) 0.008 c/s B (41.757 deg, +1.146 deg)= (02 47 02, +01 08 46) 0.029 c/s C (41.550 deg, +1.391 deg)= (02 46 12, +01 23 28) 0.003 c/s Source A is located 0.1' from 1RXS J024615.3+011427, a RASS source identified to an AF star. Source C is located 0.1' from a quasar Q 0243+011. No catalogued source was found for Source B. Source B, the brightest of the three, and found near the edge of the field of view, is the most likely candidate for the afterglow of GRB 110213B. Another Swift observation is planned to confirm its fading. We thank the Swift operation team for performing a prompt TOO observation and making the data available quickly.