Detection of a Supernova Signature Associated with GRB 011121 | Zendy

J. S. Bloom | Zendy; S. R. Kulkarni | Zendy; P. A. Price | Zendy; D. Reichart | Zendy; T. J. Galama | Zendy; B. Schmidt | Zendy; D. A. Frail | Zendy; E. Berger | Zendy; Patrick J. McCarthy | Zendy; Roger A. Chevalier | Zendy; J. C. Wheeler | Zendy; J. P. Halpern | Zendy; D. B. Fox | Zendy; S. G. Djorgovski | Zendy; Fiona A. Harrison | Zendy; Re’em Sari | Zendy; T. S. Axelrod | Zendy; Randy A. Kimble | Zendy; Jon A. Holtzman | Zendy; K. Hurley | Zendy; F. Frontera | Zendy; L. Piro | Zendy; E. Costa | Zendy

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Detection of a Supernova Signature Associated with GRB 011121

Author(s) -

J. S. Bloom,

S. R. Kulkarni,

P. A. Price,

D. Reichart,

T. J. Galama,

B. Schmidt,

D. A. Frail,

E. Berger,

Patrick J. McCarthy,

Roger A. Chevalier,

J. C. Wheeler,

J. P. Halpern,

D. B. Fox,

S. G. Djorgovski,

Fiona A. Harrison,

Re’em Sari,

T. S. Axelrod,

Randy A. Kimble,

Jon A. Holtzman,

K. Hurley,

F. Frontera,

L. Piro,

E. Costa

Publication year - 2002

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/341551

Subject(s) - gamma ray burst , physics , astrophysics , supernova , afterglow , redshift , luminosity , astronomy , hubble space telescope , galaxy

Using observations from an extensive monitoring campaign with the HubbleSpace Telescope we present the detection of an intermediate-time flux excesswhich is redder in color relative to the afterglow of GRB 011121, currentlydistinguished as the gamma-ray burst with the lowest known redshift. The red``bump,'' which exhibits a spectral roll-over at ~7200 Angstrom, is welldescribed by a redshifted Type Ic supernova that occurred approximately at thesame time as the gamma-ray burst event. The inferred luminosity is about halfthat of the bright supernova 1998bw. These results serve as compelling evidencefor a massive star origin of long-duration gamma-ray bursts. Models that posita supernova explosion weeks to months preceding the gamma-ray burst event areexcluded by these observations. Finally, we discuss the relationship betweenspherical core-collapse supernovae and gamma-ray bursts.Comment: Published in the Astrophysical Journal (Letters) on 20 May 2002. Seven LaTeX pages, three Postscript figures, one tabl

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