{
  "eventId": "LIGO/Virgo S200213t",
  "body": "SUBJECT : LIGO/Virgo S200213t: No significant EM counterparts identified\nfrom continued GECKO observation of host galaxy candidates\n\nGu Lim (SNU), Myungshin Im (SNU), Gregory S.H. Paek (SNU), Joonho Kim\n(SNU), Sungyong Hwang (SNU), Bomi Park (SNU), Sophia Kim (SNU), Changsu\nChoi (SNU), Shuhrat A. Ehgamberdiev (UBAI), Otabek Burkhonov (UBAI), Davron\nMirzaqulov (UBAI), Hyung Mok Lee (KASI), on behalf of GECKO team\n\nWe performed follow-up observation for host galaxy candidates (Paek et al.\nGCN #27067, GCN #27119) continuously using AZT-22 1.5m telescope at\nMaidanak Astronomical Observatory in Uzbekistan in the initial and updated\nlocaliztion area of S200213t (Singer et al, GCN #27042) and overlapped\nneutrino detection area (Hussain et al, GCN #27043).\n\nNo significant EM counterpart candidates were found in the stacked images.\nSingle images were taken in B and R-band of 180 or 300 seconds. Observation\nresults are listed below. DEPTH is 5-sigma detection limit for point source\nin AB magnitude. Flux calibration is conducted using APASS DR9 catalog.\n\n NAME                   RA[J2000]       DEC[J2000]\nDISTANCE[Mpc]    DATE-OBS [UT]    FILTER  EXPTIME[s] DEPTH[AB]\n================================================================================================================================\nPGC11312                02:59:27.180 +31:23:09.161    169\n 2020-02-14T14:33:57    B       1500        23.35\nPGC11312                02:59:27.180 +31:23:09.161    169\n 2020-02-20T14:33:12    B        900        23.05\nPGC11312                02:59:27.180 +31:23:09.161    169\n 2020-02-14T15:01:51    R       1500        22.08\nPGC11312                02:59:27.180 +31:23:09.161    169\n 2020-02-20T14:50:37    R        900        22.64\nUGC02483                03:01:36.753 +31:49:09.293     91\n 2020-02-14T16:33:02    B        600        18.42\nUGC02483                03:01:36.753 +31:49:09.293     91\n 2020-02-20T15:53:40    B        900        22.29\nUGC02483                03:01:36.753 +31:49:09.293     91\n 2020-02-20T16:11:05    R        900        21.84\n2MASS+03014097+3153413  03:01:40.977 +31:53:41.330     97\n 2020-02-20T16:34:54    B        900        22.72\n2MASS+03014097+3153413  03:01:40.977 +31:53:41.330     97\n 2020-02-20T16:52:18    R        900        22.00\n2MASS+03012583+3135093  03:01:25.837 +31:35:09.301    254\n 2020-02-14T15:39:28    B       1500        23.40\n2MASS+03012583+3135093  03:01:25.837 +31:35:09.301    254\n 2020-02-20T15:13:47    B        900        23.18\n2MASS+03012583+3135093  03:01:25.837 +31:35:09.301    254\n 2020-02-14T16:06:57    R       1500        22.88\n\nWe thank all staff in Maidanak observatory for performing the observation.\nGravitational-wave EM Counterpart Korean Observatory (GECKO) is a network\nof 10+ 0.5m to 1m class telescopes over the world.\n���",
  "email": "lim9gu@gmail.com",
  "circularId": 27258,
  "subject": "LIGO/Virgo S200213t: No significant EM counterparts identified from continued GECKO observation of host galaxy candidates",
  "version": 2,
  "submitter": "Gu Lim at Seoul National U  <lim9gu@gmail.com>",
  "createdOn": 1582900954000,
  "editedOn": 1744224210387,
  "format": "text/plain",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Tyler Barna at University of Minnesota <tylerpbarna@gmail.com>",
  "bibcode": "2020GCN.27258....1C"
}