The multiwavelength afterglow of GRB 050721: a puzzling rebrightening seen in the optical but not in the X-ray

L. A. Antonelli; V. Testa; P. Romano; D. Guetta; K. Torii; Valerio D' Elia; D. Malesani; G. Chincarini; S. Covino; P. D’Avanzo; M. Della Valle; F. Fiore; D. Fugazza; A. Moretti; L. Stella; G. Tagliaferri; S. D. Barthelmy; D. N. Burrows; S. Campana; M. Capalbi; G. Cusumano; N. Gehrels; P. Giommi; Davide Lazzati; V. La Parola; V. Mangano; T. Mineo; John Nousek; P. T. O’Brien; M. Perri

doi:10.1051/0004-6361:20065283

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Abstract

Context.GRB 050721 was detected by Swift and promptly followed-up, in the X-ray by Swift itself and, in the optical band, by the VLT operated, for the first time, in rapid response mode starting observations about 25 m after the burst. A multiwavelength monitoring campaign was performed in order to study its afterglow's behavior.

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Antonelli et al. (2006) studied this question.

synapsesocial.com/papers/6a86e0fb2527c72a71a245a8 https://doi.org/10.1051/0004-6361:20065283

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The multiwavelength afterglow of GRB 050721: a puzzling rebrightening seen in the optical but not in the X-ray

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Abstract

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The multiwavelength afterglow of GRB 050721: a puzzling rebrightening seen in the optical but not in the X-ray

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