{
  "circularId": 2445,
  "createdOn": 1068741573000,
  "submitter": "Darach Watson at U.of Copenhagen  <darach@astro.ku.dk>",
  "version": 3,
  "subject": "SN 2003jd (SN/GRB?) -- X-ray Observations",
  "body": "D. Watson, E. Pian (INAF - Astron. Obs. of Trieste), J. N. Reeves (GSFC),\nJ. Hjorth and K. Pedersen (University of Copenhagen) report:\n\nA 25ks observation of the hypernova SN2003jd (IAUC 8232,8234) which has an\noptical spectrum similar to the GRB-associated SNe 1998bw and 2003dh (GCN\n2431, 2435) was performed with Chandra ACIS-S starting 18:47:44 UT Nov.\n10.\n\nNo source is detected at the position of the supernova with a 3sigma\nupper limit for the 0.3-2.0keV band of 5.7e-16 erg/cm^2/s.  At a distance\nof 75 Mpc this implies an upper limit to the luminosity 3.8e38 erg/s.\nThis is at least 40 times fainter than SN1998bw at about 30 days after the\nGRB or a factor of >4 fainter than SN1980K and consistent with the X-ray\nflux from either SN 1994I or SN2002ap at a similar epoch.",
  "email": "darach@astro.ku.dk",
  "eventId": "SN 2003jd",
  "bibcode": "2003GCN..2445....1W",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
  "editedOn": 1777052967095,
  "format": "text/plain"
}