{
  "bibcode": "2016GCN.19420....1M",
  "body": "F. E. Marshall (NASA/GSFC) and T.G.R. Roegiers (PSU) report on behalf of the Swift/UVOT team:\n\nThe afterglow of the LAT-triggered GRB 160509A (Longo et al., GCN Circ. 19403)\nhas been detected in the X-ray (Kennea et al., GCN Circ. 19408),\noptical (Levan et al., GCN Circ. 19410; Cenko et al., GCN Circ. 19416),\nnear-IR (Tanvir et al., GCN Circ. 19419), and radio (Alexander et al. GCN Circ. 19414) bands.\nNo afterglow was seen in the initial UVOT observation in the u filter\n(Marshall and Roegiers, GCN Circ. 19412). As detailed in the table below,\nadditional UVOT observations also show no detections.\nAll the upper limits are at 2-sigma confidence.\n\nFilter         T_start(s)   T_stop(s)      Exp(s)         Mag\n\nu                7259        19794          626          >21.6\nu               24201        36310         1802          >22.2\nv               25452        36990         1257          >21.4\nwhite           24826        36919         1802          >23.2\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.31 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 19420,
  "createdOn": 1462915827000,
  "email": "femarsha@khamseen.gsfc.nasa.gov",
  "subject": "GRB 160509A: Further Swift/UVOT Observations",
  "submitter": "Frank Marshall at GSFC  <femarsha@khamseen.gsfc.nasa.gov>",
  "eventId": "GRB 160509A"
}