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astro-ph2003★ 40 cited
Optical and NIR Observations of the Afterglow of GRB 020813
S. Covino, D. Malesani, F. Tavecchio +28
We present optical and near-infrared (NIR) photometry of the bright afterglow of GRB 020813. Our data span from 3 hours to 4 days after the GRB event. A rather sharp achromatic bre…
astro-ph2002★ 114 cited
The Dynamical Status of the Cluster of Galaxies 1E0657-56
R. Barrena, A. Biviano, M. Ramella +2
We present the results of a new spectroscopic and photometric survey of the hot X-ray cluster 1E0657-56, at z=0.296. We determine the presence of a low velocity dispersion subclust…