An HST Study of the Supernovae Accompanying GRB 040924 and GRB 041006

A. M. Soderberg; S. R. Kulkarni; P. A. Price; D. B. Fox; E. Berger; D. -S. Moon; S. B. Cenko; A. Gal-Yam; D. A. Frail; R. A. Chevalier; L. Cowie; G. S. Da Costa; A. MacFadyen; P. J. McCarthy; N. Noel; H. S. Park; B. A. Peterson; M. M. Phillips; M. Rauch; A. Rest; J. Rich; K. Roth; M. Roth; B. P. Schmidt; R. C. Smith; P. R. Wood

doi:10.1086/498009

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An HST Study of the Supernovae Accompanying GRB 040924 and GRB 041006

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Abstract

We present the results from a {\it Hubble Space Telescope/ACS} study of the supernovae associated with gamma-ray bursts 040924 ($z=0.86$) and 041006 ($z=0.71$). We find evidence that both GRBs were associated with a SN 1998bw-like supernova dimmed by $\sim 1.5$ and $\sim 0.3$ magnitudes, respectively, making GRB 040924 the faintest GRB-associated SN ever detected. We study the luminosity dispersion in GRB/XRF-associated SNe and compare to local Type Ibc supernovae from the literature. We find significant overlap between the two samples, suggesting that GRB/XRF-associated SNe are not necessarily more luminous nor produce more $^{56}$Ni than local SNe. Based on the current (limited) datasets, we find that the two samples may share a similar $^{56}$Ni production mechanism.

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A. M. Soderberg, S. R. Kulkarni, P. A. Price, D. B. Fox, E. Berger, D. -S. Moon, S. B. Cenko, A. Gal-Yam, D. A. Frail, R. A. Chevalier, L. Cowie, G. S. Da Costa, A. MacFadyen, P. J. McCarthy, N. Noel, H. S. Park, B. A. Peterson, M. M. Phillips, M. Rauch, A. Rest, J. Rich, K. Roth, M. Roth, B. P. Schmidt, R. C. Smith, P. R. Wood. 2005-12-06. An HST Study of the Supernovae Accompanying GRB 040924 and GRB 041006. https://doi.org/10.1086/498009

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