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arXiv · 1104.5141

XRF 100316D / SN 2010bh and the Nature of Gamma Ray Burst Supernovae

Z. Cano·D. Bersier·C. Guidorzi·S. Kobayashi·A. J. Levan·N. R. Tanvir·K. Wiersema·P. D'Avanzo·A. S. Fruchter·P. Garnavich·A. Gomboc·J. Gorosabel·D. Kasen·D. Kopac·R. Margutti·P. A. Mazzali·A. Melandri·C. G. Mundell·P. E. Nugent·E. Pian·R. J. Smith·I. Steele·R. A. M. J. Wijers·S. E. Woosley
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Abstract

We present ground-based and HST optical and infrared observations of XRF 100316D / SN 2010bh. It is seen that the optical light curves of SN 2010bh evolve at a faster rate than the archetype GRB-SN 1998bw, but at a similar rate to SN 2006aj, a supernova that was spectroscopically linked with XRF 060218, and at a similar rate to non-GRB associated type Ic SN 1994I. We estimate the rest-frame extinction of this event from our optical data to be E(B-V)=0.18 +/- 0.08 mag. We find the V-band absolute magnitude of SN 2010bh to be M_{V}=-18.62 +/- 0.08, which is the faintest peak V-band magnitude observed to-date for a spectroscopically-confirmed GRB-SNe. When we investigate the origin of the flux at t-t_{o}=0.598 days, it is shown that the light is not synchrotron in origin, but is likely coming from the supernova shock break-out. We then use our optical and infrared data to create a quasi-bolometric light curve of SN 2010bh which we model with a simple analytical formula. The results of our modeling imply that SN 2010bh synthesized a nickel mass of M_{Ni} \approx 0.10 M_{sun}, ejected M_{ej} \approx 2.2 M_{sun} and has an explosion energy of E_{k} \approx 1.4 x 10^{52} erg. Finally, for a sample 22 GRB-SNe we check for a correlation between the stretch factors and luminosity factors in the R band and conclude that no statistically-significant correlation exists.

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Z. Cano, D. Bersier, C. Guidorzi, S. Kobayashi, A. J. Levan, N. R. Tanvir, K. Wiersema, P. D'Avanzo, A. S. Fruchter, P. Garnavich, A. Gomboc, J. Gorosabel, D. Kasen, D. Kopac, R. Margutti, P. A. Mazzali, A. Melandri, C. G. Mundell, P. E. Nugent, E. Pian, R. J. Smith, I. Steele, R. A. M. J. Wijers, S. E. Woosley. 2011-04-27. XRF 100316D / SN 2010bh and the Nature of Gamma Ray Burst Supernovae. https://doi.org/10.1088/0004-637x%2F740%2F1%2F41

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