{"paper":{"title":"BeppoSAX Observations of GRB980425: Detection of the Prompt Event and Monitoring of the Error Box","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Castro-Tirado, A. Coletta, A. Owens, A. Parmar, D. Dal Fiume, E. Costa, E. Palazzi, E. Pian, F. Fiore, F. Frontera, G. Cusumano, J. Danziger, J. Heise, J.J.M. in 't Zand, J.M. Muller, L.A. Antonelli, L. Amati, L. Nicastro, L. Piro, M. Feroci, M. Orlandini, N. Masetti, P. Giommi, P. Soffitta, R.C. Butler, S. Del Sordo, T. Oosterbroek, V. Torroni","submitted_at":"1999-10-13T15:30:25Z","abstract_excerpt":"We present BeppoSAX follow-up observations of GRB980425 obtained with the Narrow Field Instruments (NFI) in April, May, and November 1998. The first NFI observation has detected within the 8' radius error box of the GRB an X-ray source positionally consistent with the supernova 1998bw, which exploded within a day of GRB980425, and a fainter X-ray source, not consistent with the position of the supernova. The former source is detected in the following NFI pointings and exhibits a decline of a factor of two in six months. If it is associated with SN 1998bw, this is the first detection of X-ray e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9910235","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/9910235/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}