{
  "bibcode": "2019GCN.25657....1P",
  "body": "D. A. Perley and A. M. Cockeram (LJMU) report:\n\nWe obtained another epoch of r/i/z imaging of the optical counterpart of \nGRB 190829A (Dichiara et al., GCN 25552; Lesage et al., GCN 25575; Xu et \nal., GCN 25555) with IO:O on the Liverpool Telescope Telescope on \n2019-09-04 between 04:43 and 05:32 UT.  Image subtraction was performed \nusing PS1 imaging as a template.  We report the following photometry:\n\n  t-t0    filt   mag        unc\n  ------  ----   -----     ----\n  5.3707  i      21.32 +/- 0.09\n  5.3941  z      20.61 +/- 0.10\n\nThis is consistent with a continued, slight rise compared to our \nprevious two LT epochs (e.g., i = 21.45 at t = 4.29 days; GCN 25623) and \nwith our earlier interpretation of the light curve flattening as the \nappearance of an associated supernova.  Spectroscopic confirmation is \nstill necessary to solidify this interpretation.\n\nWe note that our z-band measurement is 1 magnitude fainter than that \nreported by Bolmer et al. (GCN 25651) at a similar epoch, and we do not \nconfirm the sharp, short-timescale rise that they report.  It is \npossible that the difference arises due to lack of host galaxy \nsubtraction in the GROND photometry.\n\n\n\n\n\n\n\n\n\n\n\n\n\nDisclaimerNone",
  "circularId": 25657,
  "createdOn": 1567615019000,
  "email": "d.a.perley@ljmu.ac.uk",
  "subject": "GRB 190829A: Liverpool Telescope observations of a slow supernova rise",
  "submitter": "Daniel Perley at Liverpool JMU  <d.a.perley@ljmu.ac.uk>",
  "eventId": "GRB 190829A"
}