A very luminous magnetar-powered supernova associated with an ultra-long gamma-ray burst
Abstract
A new class of ultra-long duration (>10,000 s) gamma-ray bursts has recently been suggested. They may originate in the explosion of stars with much larger radii than normal long gamma-ray bursts or in the tidal disruptions of a star. No clear supernova had yet been associated with an ultra-long gamma-ray burst. Here we report that a supernova (2011kl) was associated with the ultra-long duration burst 111209A, at z=0.677. This supernova is more than 3 times more luminous than type Ic supernovae associated with long gamma-ray bursts, and its spectrum is distinctly different. The continuum slope resembles those of super-luminous supernovae, but extends farther down into the rest-frame ultra-violet implying a low metal content. The light curve evolves much more rapidly than super-luminous supernovae. The combination of high luminosity and low metal-line opacity cannot be reconciled with typical type Ic supernovae, but can be reproduced by a model where extra energy is injected by a strongly magnetized neutron star (a magnetar), which has also been proposed as the explanation for super-luminous supernovae.
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Cite
@article{arxiv.1509.03279,
title = {A very luminous magnetar-powered supernova associated with an ultra-long gamma-ray burst},
author = {Jochen Greiner and Paolo A. Mazzali and D. Alexander Kann and Thomas Krühler and Elena Pian and Simon Prentice and Felipe Olivares E. and Andrea Rossi and Sylvio Klose and Stefan Taubenberger and Fabian Knust and Paulo M. J. Afonso and Chris Ashall and Jan Bolmer and Corentin Delvaux and Roland Diehl and Jonathan Elliott and Robert Filgas and Johan P. U. Fynbo and John F. Graham and Ana Nicuesa Guelbenzu and Shiho Kobayashi and Giorgos Leloudas and Sandra Savaglio and Patricia Schady and Sebastian Schmid and Tassilo Schweyer and Vladimir Sudilovsky and Mohit Tanga and Adria C. Updike and Hendrik van Eerten and Karla Varela},
journal= {arXiv preprint arXiv:1509.03279},
year = {2015}
}
Comments
Table 1 only in printed version