{"paper":{"title":"The X-ray, Optical and Infrared Counterpart to GRB 980703","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Blain, A.M. Levine, A. Owens, A. Pizzella, C. Kouveliotou, C. Lidman, C. Robinson, D.A. Smith, E. Costa, E. Leibowitz, E. Palazzi, E. Pian, F. Frontera, H. Boehnhardt, I. Smail, J. Greiner, J. Heise, J.H. Hough, J.J.M. in 't Zand, J. van Paradijs, K. Hurley, L.A. Antonelli, L. Piro, M. Briggs, M. Feroci, N. Masetti, N. Suntzeff, N. Tanvir, P.J. Groot, P.M. Vreeswijk, R.A.M.J. Wijers, S. Chaty, S. Young, T.J. Galama, T. Koshut, T. Oosterbroek, T.R. Geballe, V. Doublier, Y. Lipkin","submitted_at":"1999-04-21T14:43:29Z","abstract_excerpt":"We report on X-ray, optical and infrared follow-up observations of GRB 980703. We detect a previously unknown X-ray source in the GRB error box; assuming a power law decline we find for its decay index alpha < -0.91 (3-sigma). We invoke host galaxy extinction to match the observed spectral slope with the slope expected from `fireball' models. We find no evidence for a spectral break in the infrared to X-ray spectral range on 1998 July 4.4, and determine a lower limit of the cooling break frequency: nu_c > 1.3 x 10^{17} Hz. For this epoch we obtain an extinction of A_V = 1.50 +/- 0.11. From the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9904286","kind":"arxiv","version":1},"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"}