{
  "circularId": 36263,
  "submittedHow": "web",
  "bibcode": "2024GCN.36263....1K",
  "eventId": "LIGO/Virgo/KAGRA S240422ed",
  "submitter": "Harsh Kumar at Center for Astrophysics  | Harvard & Smithsonian  <harshkosli13@gmail.com>",
  "createdOn": 1713902678221,
  "body": "H. Kumar, D. Hiramatsu, E. Berger, A. Villar, K. D. Soto, S. K. Yadavalli, M. Hussaini, A. Gagliano, C. Ransome (Harvard) report:\n\n\nWe used the LDSS-3 imager on the 6.5m Magellan Clay telescope to carry out a search for an optical counterpart to the gravitational wave event S240422ed (GCN #36236). A series of 120-second i-band images were obtained starting about 5 hours after the trigger, targeting galaxies coincident with the 3D localization of the event as described by Piro et al. (GCN #36244).\n\nInspecting the images in the vicinity of galaxies within the localization volume, in comparison to PS1/3pi images, we identify two sources (one low significance):\n \n------------------------------------------------------------------\nRA (J2000) | Dec (J2000)| Filter | Mag(AB)| Remarks\n------------------------------------------------------------------\n07:57:41.422 | -21:53:15.12 | i | ~21.5 | S/N ~ 8\n08:06:04.799 | -22:27:03.71 | i | ~21.7 | S/N < 5\n------------------------------------------------------------------\n\nThese sources are slightly fainter than the reference images from PS1/3pi, and we therefore cannot comment about their transient nature. There are no minor planets around these coordinates. Further observations of these candidates are planned, and we encourage additional follow-up.\n\nWe thank Marcelo Mora, Povilas Palunas, and the LCO staff for rapid execution of these observations.\n",
  "subject": "LIGO/Virgo/KAGRA S240422ed: Potential Candidates from Magellan galaxy-based search"
}