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GRB 130427A: a Nearby Ordinary Monster

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arxiv 1311.5254 v3 pith:5LTGY73M submitted 2013-11-20 astro-ph.HE

GRB 130427A: a Nearby Ordinary Monster

classification astro-ph.HE
keywords grbsgamma-rayuniverseafterglowbandbecauseburstbursts
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Long-duration Gamma-Ray Bursts (GRBs) are an extremely rare outcome of the collapse of massive stars, and are typically found in the distant Universe. Because of its intrinsic luminosity ($L\sim 3 \times 10^{53}$ erg s$^{-1}$) and its relative proximity ($z=0.34$), GRB 130427A was a unique event that reached the highest fluence observed in the gamma-ray band. Here we present a comprehensive multiwavelength view of GRB 130427A with Swift, the 2-m Liverpool and Faulkes telescopes and by other ground-based facilities, highlighting the evolution of the burst emission from the prompt to the afterglow phase. The properties of GRB 130427A are similar to those of the most luminous, high-redshift GRBs, suggesting that a common central engine is responsible for producing GRBs in both the contemporary and the early Universe and over the full range of GRB isotropic energies.

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