Berger, E; Chornock, R; Holmes, T R; Foley, R J; Cucchiara, Antonino; Wolf, Christian; Podsiadlowski, Ph.; Fox, Derek B; Roth, K C
We present spectroscopic observations of GRB091127 (z = 0.490) at the peak of the putative associated supernova SN2009nz. Subtracting a late-time spectrum of the host galaxy, we isolate the contribution of SN2009nz and uncover broad features typical of nearby gamma-ray-burst-supernovae (GRB-SNe). This establishes unambiguously that GRB091127 was accompanied by a broad-lined Type Ic SN, and links a cosmological long burst with a standard energy release (Eγ,iso ≈ 1.1 × 1052erg) to a massive star...[Show more]
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