{
  "bibcode": "2003GCN..2131....1C",
  "body": "R. Chornock, R. J. Foley, A. V. Filippenko, M. Papenkova, and D. Weisz,\nUniversity of California, Berkeley, report that inspection of CCD\nspectra (range 310-1000 nm) of GRB 030329, obtained on Apr. 8 UT with\nthe Shane 3-m telescope at Lick Observatory, confirms the emergence of\nbroad bumps (especially at rest-frame 500 nm) characteristic of the\npeculiar type-Ic supernovae 1998bw and 2002ap at early times, as announced\nby Matheson et al. in GCN 2107 and GCN 2120. The association between \ncore-collapse supernovae and at least some of the long-duration GRBs thus\nseems solid. We expect the supernova features to continue strengthening\nwith time relative to the power-law continuum of the GRB afterglow.\n\nP.S.  This information also appears in IAUC 8114, but has been reposted\nhere for the benefit of those GCN subscribers who do not read the\nIAU Circulars.",
  "circularId": 2131,
  "createdOn": 1049950586000,
  "email": "chornock@astro.berkeley.edu",
  "subject": "GRB 030329 and SN 2003dh",
  "submitter": "Ryan Chornock at UC Berkeley  <chornock@astro.berkeley.edu>",
  "eventId": "GRB 030329"
}