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Long gamma-ray bursts without visible supernovae: a case study of redshift estimators and alleged novel objects

Shlomo Dado·Arnon Dar·A. De Rujula·Rainer Plaga
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Abstract

It has been argued that the observational limits on a supernova (SN) associated with GRB060614 convincingly exclude a SN akin to SN1998bw as its originator, and provide evidence for a new class of long-duration GRBs. We discuss this issue in the contexts of indirect 'redshift estimators' and of the fireball and cannonball models of GRBs. The latter explains the unusual properties of GRB060614: at its debated but favoured low redshift (0.125) they are predicted, as opposed to exceptional, if the associated core-collapse SN is of a recently discovered, very faint type. We take the occasion to discuss the 'association' between GRBs and SNe.

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Shlomo Dado, Arnon Dar, A. De Rujula, Rainer Plaga. 2007-12-14. Long gamma-ray bursts without visible supernovae: a case study of redshift estimators and alleged novel objects. https://doi.org/10.1086/528673

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