{
  "submittedHow": "web",
  "submitter": "O. Guiffreda at UMD <oriogui@umd.edu>",
  "eventId": "LIGO/Virgo/KAGRA S240422ed",
  "subject": "LIGO/Virgo/KAGRA S240422ed: PRIME near-infrared observations",
  "circularId": 36306,
  "bibcode": "2024GCN.36306....1G",
  "createdOn": 1714061531838,
  "body": "O. Guiffreda (UMD), J. Durbak (UMD), E. Troja (U Rome), R.Hamada (Osaka U), T, Nagano (Osaka U), A. S. Kutyrev (NASA/GSFC, UMD), D. Suzuki (Osaka U), T. Sumi (Osaka U), K. De (MIT), S. B. Cenko (NASA/GSFC), \n\nFollowing the report of the LVK gravitational wave candidate S240422ed (GCN 36236, GCN 36240), we began tiling the field in J band with PRIME.  Each tile has an exposure of approximately 900 s to reach a sensitivity of J~21 AB mag. Observations began on 2023-04-23 17:01 UTC and are currently ongoing.\n\nOur pointings are reported to the TreasureMap (Wyatt et al., 2020): https://treasuremap.space/alerts?graceids=S240422ed\n\nData reduction and analysis is in progress.\n\nPRIME is a 1.8m telescope with 1.56 square degree FOV (0.5 arcsec/pixel) located in Sutherland, South Africa at the South African Astronomical Observatory (SAAO) (Kutyrev et al. 2023, Yama et al. 2023).\n\nWe thank the staff at SAAO for their support with these observations.\n\n"
}