{"paper":{"title":"Swift and XMM observations of the dark GRB 050326","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Beardmore, A. Cucchiara, A. De Luca (INAF-Iasf), A. Moretti (INAF-OAB), A. Tiengo, B. Zhang, C. Pagani, D. Malesani (SISSA), D.N. Burrows, E.E. Fenimore, G. Chincarini, G. Cusumano, G. Tagliaferri, J.E. Hill, J.N. Reeves, J.P. Osborne, L. Angelini, L. Barbier, L.R. Cominsky, M. Capalbi, M. Goad, M. Perri, N.E. White, N. Gehrels, P. Banat, P. Meszaros, P. Romano, S. Campana, S.D. Barthelmy, S. Kobayashi, T. Mineo, V. La Parola, V. Mangano","submitted_at":"2005-12-15T11:20:43Z","abstract_excerpt":"We present Swift and XMM observations of GRB 050326, detected by Swift-BAT. The fluence was 7.7x10^-6 erg cm^-2 (20-150 keV), and its spectrum was hard, with a power law photon index 1.25. The afterglow light curve did not show any break nor flares between ~1 hr and ~6 d after the burst, and decayed with a slope 1.70. The afterglow spectrum is well fitted by a power-law model, suffering absorption both in the Milky Way and in the host galaxy. The rest-frame Hydrogen column density is significant, N_H_z > 4x10^21 cm^-2, and the redshift of the absorber is z > 1.5. There was good agreement betwe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0512392","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/0512392/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"}