{
  "bibcode": "2023GCN.33230....1K",
  "body": "H. Kumar (IITB), V. Swain (IITB), R. Norbu (IAO), G. Waratkar (IITB), V.\nBhalerao (IITB), G. C. Anupama(IIA), S. Barway (IIA) report on behalf of\nthe GIT team:\n\nWe observed ZTF23aabmzlp/AT2023azs discovered by Zwicky Transient Facility\n(Andreoni et al., GCN #33229), with 0.7m GROWTH-India Telescope (GIT). We\nobtained three exposures of 300sec each in the g', r', and i' filters. We\nclearly detected the candidate in our stacked images. The photometric\nresults follow as:-\n\n-------------------------------------------------------------------\n\n JD (mid) | Filter | Magnitude (AB) |\n\n-------------------------------------------------------------------\n\n2459973.224114 | g' | 20.48 +/- 0.07 |\n\n2459973.235212 | r' | 20.31 +/- 0.06 |\n2459973.248096 | i' | 19.79 +/- 0.20 |\n-------------------------------------------------------------------\n\nGIT observations imply that the source continues fading and is redder in\ncolour. Comparing our g' and r' observations with ZTF (Andreoni et al., GCN\n#33229), we compute a power-law decay index of ~0.7, further strengthening\nthe claim that the candidate is an afterglow. Candidate follow-up is\nencouraged. The magnitudes are calibrated against PanSTARRS DR1 (Chambers\net al., 2016) and not corrected for Galactic extinction.\n\nThe GROWTH India Telescope (GIT; Kumar et al. 2022\n<https://iopscience.iop.org/article/10.3847/1538-3881/ac7bea>) is a 70-cm\ntelescope with a 0.7-degree field of view, set up by the Indian Institute\nof Astrophysics (IIA) and the Indian Institute of Technology Bombay (IITB)\nwith funding from DST-SERB and IUSSTF. It is located at the Indian\nAstronomical Observatory (Hanle), operated by IIA. We acknowledge funding\nby the IITB alumni batch of 1994, which partially supports operations of\nthe telescope. Telescope technical details are available at\nhttps://sites.google.com/view/growthindia/.",
  "circularId": 33230,
  "createdOn": 1674932902000,
  "email": "harshkosli13@gmail.com",
  "subject": "ZTF23aabmzlp/AT2023azs: GIT confirmation of the likely afterglow",
  "submitter": "Harsh Kumar at Indian Inst of Tech,Bombay  <harshkosli13@gmail.com>",
  "eventId": "ZTF23aabmzlp"
}