TITLE: GCN CIRCULAR NUMBER: 43936 SUBJECT: GRB 260207A: TESS Detection and Possible VLA Counterpart DATE: 26/03/06 18:35:15 GMT FROM: Sarah Chastain at Texas Tech University <sarahichastain@gmail.com> S. I Chastain (TTU) and M. M. Fausnaugh (TTU) report: Approximately 93% of the Fermi GBM localization of GRB 260207A (Fermi GBM Team, GCN 43628) fell within the field of view of the Transiting Exoplanet Survey Satellite (TESS; Ricker et al. JATIS 1 2015) during observations of sector 100. We identified a counterpart consistent with the counterpart reported by MASTER-OT (C. Francile et al., GCN 43633). At around 14 days post-burst, we carried out VLA observations of this counterpart and identified a faint source within the error region with a flux of 24 +/- 4 microJy/BM at 6 GHz. The position of this source is: RA (J2000): 10:44:11.3314 ± 0.0016 seconds Declination (J2000): -33:09:36.053 ± 0.067 arcseconds This circular includes data collected with the TESS mission, obtained from the MAST data archive at the Space Telescope Science Institute (STScI). Funding for the TESS mission is provided by the NASA Explorer Program. STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations were carried out as part of project SF171128, approved in the framework of the Fermi - NRAO joint program agreement. View this GCN Circular online at https://gcn.nasa.gov/circulars/43936. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...