R
R. A. M. J. Wijers
Researcher at European Southern Observatory
Publications - 48
Citations - 2566
R. A. M. J. Wijers is an academic researcher from European Southern Observatory. The author has contributed to research in topics: Gamma-ray burst & Afterglow. The author has an hindex of 28, co-authored 45 publications receiving 2510 citations.
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Journal ArticleDOI
Rapid-Response Mode VLT/UVES spectroscopy of GRB060418: Conclusive evidence for UV pumping from the time evolution of FeII and NiII excited- and metastable-level populations
P. M. Vreeswijk,C. Ledoux,Alain Smette,Sara L. Ellison,Andreas O. Jaunsen,Michael I. Andersen,A. S. Fruchter,J. P. U. Fynbo,Jens Hjorth,Andreas Kaufer,Palle Møller,Patrick Petitjean,Sandra Savaglio,R. A. M. J. Wijers +13 more
TL;DR: In this article, high-resolution spectroscopic observations of GRB060418, obtained with VLT/UVES, were obtained at 11, 16, 25, 41 and 71 minutes (midexposure) after the trigger, with a resolving power of 7 km/s, and a signal-to-noise ratio of 10-15.
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Probing Cosmic Chemical Evolution with Gamma-Ray Bursts: GRB060206 at z=4.048
J. P. U. Fynbo,R. L. C. Starling,C. Ledoux,K. Wiersema,C. C. Thöne,Jesper Sollerman,P. Jakobsson,Jens Hjorth,Dan M. Watson,P. M. Vreeswijk,Palle Møller,E. Rol,J. Gorosabel,Jyri Näränen,R. A. M. J. Wijers,Gunnlaugur Björnsson,J. M. Castro Cerón,P. A. Curran,D. H. Hartmann,S. T. Holland,B. L. Jensen,A. J. Levan,M. Limousin,Chryssa Kouveliotou,Gijs Nelemans,K. Pedersen,Robert S. Priddey,Nial R. Tanvir +27 more
TL;DR: In this article, the afterglow of the gamma-ray burst GRB 060206 was analyzed to determine the metallicity of the GRB absorber and the physical conditions in the circumburst medium.
Journal ArticleDOI
Evidence for a supernova in reanalyzed optical and near-infrared images of GRB970228
Titus Galama,Nial Tanvir,P. M. Vreeswijk,R. A. M. J. Wijers,Paul J. Groot,E. Rol,J. van Paradijs,Chryssa Kouveliotou,A. S. Fruchter,N. Masetti,Henrik D. Pedersen,Bruce Margon,Eric W. Deutsch,Mark R. Metzger,Lee Armus,S. Klose,B. Stecklum +16 more
TL;DR: In this article, B-, V-, R-c-, I_c-, J-, H-, K- and K'-band observations of the optical transient (OT) associated with GRB970228, based on a reanalysis of previously used images and unpublished data.
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On the Ly-alpha emission from gamma-ray burst host galaxies: evidence for low metallicities
J. P. U. Fynbo,P. Jakobsson,Palle Møller,Jens Hjorth,B. Thomsen,Michael I. Andersen,A. S. Fruchter,J. Gorosabel,S. T. Holland,C. Ledoux,Henrik D. Pedersen,James E. Rhoads,M. Weidinger,R. A. M. J. Wijers +13 more
TL;DR: In this paper, the authors reported the results of a search for Ly-alpha emission from the host galaxy of the z=2.140 GRB 011211 and other galaxies in its surrounding field.
Journal ArticleDOI
Evolution of the polarization of the optical afterglow of the γ-ray burst GRB030329
Jochen Greiner,S. Klose,Klaus Reinsch,H. M. Schmid,Re'em Sari,Dieter H. Hartmann,Chryssa Kouveliotou,Arne Rau,E. Palazzi,Christian Straubmeier,B. Stecklum,Sergej Zharikov,Gaghik H. Tovmassian,Otto Bärnbantner,Christoph Ries,Emmanuel Jehin,Arne Henden,Anlaug A Kaas,Tommy Grav,Jens Hjorth,Holger Pedersen,R. A. M. J. Wijers,Andreas Kaufer,Hye-Sook Park,G. Grant Williams,Olaf Reimer +25 more
TL;DR: In this paper, the afterglow magnetic field has a small coherence length and is mostly random, probably generated by turbulence, in contrast with the picture arising from the high polarization detected in the prompt gamma-rays from GRB021206.