{
  "bibcode": "2021GCN.30236....1H",
  "body": "The HAWC collaboration reports:\nWe present here a follow-up of the HAWC alert presented on the circular\n30183 (https://gcn.gsfc.nasa.gov/gcn3/30183.gcn3).\nThe alert in 30183 consisted of the integration of 3 transits occurring from\n2021-06-06 to 2021-06-08\n\nHere, we show flux measurements for each individual day.\nThe assumed spectrum is a power law with an index of -2.5 and\na pivot energy of 1 TeV.\nThree days after the alert, we don't see any more flux increase.\n\nTransits observed:\n1: 2021-06-11 10:17:47 - 2021-06-11 16:42:41 UTC\n2: 2021-06-10 10:21:42 - 2021-06-10 16:46:37 UTC\n3: 2021-06-09 10:25:38 - 2021-06-09 16:50:33 UTC\n4: 2021-06-08 10:29:33 - 2021-06-08 16:54:29 UTC\n5: 2021-06-07 10:33:29 - 2021-06-07 16:58:25 UTC\n6: 2021-06-06 10:37:24 - 2021-06-06 17:02:21 UTC\n\nPosition observed:\nRA (J2000): 5.08[deg]\nDec (J2000): 31.14[deg]\nPosition uncertainty: 0.10[deg]\n\nTransit | Signif.|   Flux [x10^-11]  |\n--------------------------------------\n1       |  0.00  | <0.64 (95%).      |\n2       |  0.40  | <1.43 (95%)       |\n3       |  0.32  | <1.41 (95%)       |\n4       |  4.34  | 2.30(+1.76 -1.37) |\n5       |  2.10  | 1.23(+1.60 -1.02) |\n6       |  3.21  | 1.67(+1.71 -1.18) |\nFlux units are TeV-1 cm-2 s-1.\nSignificance is pre-trials.",
  "circularId": 30236,
  "createdOn": 1623718005000,
  "email": "hgayala@psu.edu",
  "subject": "Follow-up on HAWC Transient Monitoring Alert J0020+3108",
  "submitter": "Hugo Ayala at Pennsylvania State University  <hgayala@psu.edu>"
}