{
  "subject": "LIGO/Virgo G275404: A near-infrared transient in the error circle of AGL J1914+1043",
  "eventId": "LIGO/Virgo G275404",
  "bibcode": "2017GCN.20784....1Y",
  "createdOn": 1488359848000,
  "circularId": 20784,
  "submitter": "Michitoshi Yoshida at J-GEM  <yoshidam@hiroshima-u.ac.jp>",
  "email": "yoshidam@hiroshima-u.ac.jp",
  "body": "Yoshida, M., Utsumi, Y., Nakaoka, T., Abe, T., Nagashima, H.,\nKawabata, K. S., Kawabata, M., Shiki, K. (Hiroshima U.),\nOhsawa, R. and Sako, S. (U. of Tokyo) on behalf of J-GEM\ncollaboration\n\nWe performed near-infared H-band observations of nearby galaxies\nin the error circle of the gamma-ray transient candidate found\nin the AGILE-GRID data, AGL J1914+1043 (Tavani et al. GCN 20754),\nwhich is located at the edge of the skymap of G275404 (GCN 20738)\nwith 1.5m Kanata telescope on UT 2017-02-27. The instrument used\nwas an optical near-infrared simultaneous camera HONIR.\n\nWe found a bright near-infrared transient in the observed field of\nGL191032+075314. The data was taken at 20:32UT on 2017-02-27. The\nH-band AB magnitude of the source was 16.3 +- 0.02. The location\nof the source is\n\n     RA=19:10:31.46, DEC=+07:53:52.0 .\n\nWe also conducted an I-band observation for this area simultaneously.\nNo transient source was detected with the 5-sigma I-band limiting\nmagnitude of 19.6. There is no bright counterpart in 2MASS H-band\ndata, but a point source (SSTGLMC G042.1312-00.6118; in GLIMPSE I\nSpring '07 Catalog) is clearly seen at the same position in 3.6 um\ndata taken by Spitzer GLIMPSE survey.\n\nThe observation log with 5-sigma limiting magnitudes is shown\nbelow.\n\n\nTelescope: Kanata 1.5m telescope\n------------------------------------------------------\ngalaxy          RA       DEC     UT              H\n------------------------------------------------------\nGL191032+075314 287.6351 7.8871  2017/2/27-20:32 18.7\nGL192215+140356 290.561  14.0655 2017/2/27-21:11 17.5\nGL191327+105427 288.3622 10.9076 2017/2/27-20:52 18.5\nGL191032+075314 287.6351 7.8871  2017/2/27-20:32 18.3\nGL190530+100857 286.3748 10.1491 2017/2/27-20:12 18.1\nGL190618+125620 286.5759 12.9388 2017/2/27-19:53 18.2\nGL190415+125637 286.0637 12.9437 2017/2/27-19:33 17.8\nGL185836+113738 284.6512 11.6271 2017/2/27-19:13 17.9\n------------------------------------------------------"
}