Ana Nicuesa Guelbenzu

TL;DR: It is reported that a supernova was associated with the ultra-long-duration γ-ray burst GRB 111209A, at a redshift z of 0.677, and this supernova is more than three times more luminous than type Ic supernovae associated with long-duration μ-ray bursts, and its spectrum is distinctly different.

TL;DR: In this article, the authors exploit the rich GROND multi-colour follow-up of GRB081029 combined with XRT observations to study the nature of late-time rebrightenings that appear in the optical-NIR light-curves of some GRB afterglows.

TL;DR: In this article, the authors investigated the validity of the synchrotron fireball model for gamma-ray bursts, and inferred physical parameters of the ultra-relativistic outflow.

TL;DR: In this article, a broad-band SED with a blackbody and afterglow component attenuated by dust and gas absorption is modelled with a two-component parametrised model, which delivers physical parameters of the explosion.

TL;DR: In this paper, the authors present a multi-band data set of the short burst with extended emission GRB 150424A, comprising of GROND observations, complemented with data from Swift/UVOT, Swift/XRT, HST, Keck/LRIS and data points from the literature.