{
  "bibcode": "2017GCN.21575....1E",
  "body": "S. Eikenberry, K.Ackley, and S. Klimenko (U. Florida) report:\n\nWe have investigated archival 2MASS (28 Apr 1998) and Spitzer (12 Oct\n2014) infrared observations of the field of SSS17a (Coulter et al. LVC GCN\n21529). We find no evidence of a point-like source at this location. While\nthe presence of the host galaxy somewhat complicates sensitivity\nestimates, in the case of 2MASS we have a preliminary estimate for a\n3-sigma upper limit of J(Vega) ~ 17.6 +- 0.2 mag, which corresponds to\nJ(AB) ~ 18.5 +- 0.2 mag. This is a factor of ~2.5 fainter than the\nJ(AB)=17.5 mag detection of Tanvir et al. (LVC GCN 21544), indicating a\nvariable or transient nature for this source. More detailed analyses of\nthe upper limits for both 2MASS and Spitzer are forthcoming.\n\n[GCN OPS NOTE(18aug17):  Per submitter's and author's request, the submitter\nwas changed from Singer to Eikenberry.  Singer submitted as Eikeberry's proxy,\nbecause Eikenberry's GCN account was not yet activated.]",
  "circularId": 21575,
  "createdOn": 1503087785000,
  "email": "eiken@ufl.edu",
  "subject": "LIGO/Virgo G298048: Archival 2MASS and Spitzer non-detections of the potential LIGO EM counterpart SSS17a",
  "submitter": "Stephen Eikenberry at  U of Florida  <eiken@ufl.edu>",
  "eventId": "LIGO/Virgo G298048"
}