{"paper":{"title":"Probing a GRB progenitor at a redshift of z=2: a comprehensive observing campaign of the afterglow of GRB 030226","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A.A. Henden, A. de Ugarte Postigo, A. Fruchter, A.J. Castro-Tirado, A. Rau, A. Zeh, B. Stecklum, C. Brinkworth, C. Kouveliotou, C. Ries, D.H. Hartmann, D. Malesani, D. Reichart, E. Guenther, E. Maiorano, E. Palazzi, E. Pian, E.P.J. van den Heuvel, E. Rol, F. Mannucci, G. Ghisellini, I. Smail, J. Gorosabel, J. Greiner, J. Hjorth, J.M. Castro Cer\\'on, J.P. Fynbo, J. Rhoads, K. Lindsay, K. Pedersen, L.A. Antonelli, L. Kaper, M. Jel\\'inek, M. Nysewander, N. Masetti, N.R. Tanvir, P.M. Vreeswijk, R.A.M.J. Wijers, R. Hudec, S. Covino, S. Klose","submitted_at":"2004-08-03T08:40:36Z","abstract_excerpt":"We report results from a comprehensive follow-up observing campaign of the afterglow of GRB 030226, including VLT spectroscopy, VLT polarimetry, and Chandra X-ray observations. In addition, we present BOOTES-1 wide-field observations at the time of the occurrence of the burst. First observations at ESO started 0.2 days after the event when the GRB afterglow was at a magnitude of R~19 and continued until the afterglow had faded below the detection threshold (R>26). No underlying host galaxy was found. The optical light curve shows a break around 0.8 days after the burst, which is achromatic wit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0408041","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}