{
  "bibcode": "2019GCN.25237....1D",
  "body": "M. de Naurois on behalf of the H.E.S.S. collaboration\n\nThe H.E.S.S. array of imaging atmospheric Cherenkov telescopes was used to carry out follow-up observations of the GW trigger S190728q (GCN #25187) using the LALInference map (GCN #25208).\nObservations started July 28 at 20:17 UTC and lasted until July 29 02:45 UTC. A total of 7 pointings allowed to cover about 80% of the LALInference map provided in the Update-5 GCN notice and the GCN circular #25208. Observations of each of the pointings reached at least a 5-sigma sensitivity of about 20% of the flux from the Crab nebula. A preliminary analysis did not reveal significant gamma-ray emission in any of the observed fields. Further analyses of the data are on-going.\n\nThe following regions-of-interests were covered. Given is the start time of the first observation of each of the pointings and the center of the ROI. \n\nTime (UTC)\t\tRA (J2000)\tDec (J2000)\n2019-07-28 20:17\t20h51m13s\t7d01m49s\n2019-07-28 21:12\t20h52m22s\t8d09m36s\n2019-07-28 22:17\t21h08m26s\t15d01m03s\n2019-07-28 22:59\t20h57m32s\t10d48m25s\n2019-07-28 23:47\t20h51m55s\t5d40m45s\n2019-07-29 00:16\t21h14m46s\t17d11m31s\n2019-07-29 01:03\t21h04m34s\t12d56m30s\n\nH.E.S.S. is an array of five imaging atmospheric Cherenkov telescopes for the detection of very-high-energy gamma-ray sources and is located in the Khomas Highlands in Namibia. It was constructed and is operated by researchers from Armenia, Australia, Austria, France, Germany, Ireland, Japan, the Netherlands, Poland, South Africa, Sweden, UK, and the host country, Namibia. For more details see https://www.mpi-hd.mpg.de/hfm/HESS/",
  "circularId": 25237,
  "createdOn": 1564604880000,
  "email": "fabian.schussler@cea.fr",
  "subject": "LIGO/Virgo S190728q: No counterpart candidates in H.E.S.S. observations",
  "submitter": "Fabian Schussler at CEA  <fabian.schussler@cea.fr>",
  "eventId": "LIGO/Virgo S190728q"
}