{"paper":{"title":"Multi-epoch afterglow rebrightenings in GRB 250129A: Evidence for successive shock interactions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. de Ugarte Postigo, A. Durroux, A. Esamdin, A. Iskandar, A. Klotz, A. Le Calloch, A. Lien, A.M. Watson, A. Simon, A. Takey, A.V. Filippenko, A.Y. Burdanov, B.M. Mihov, B. Schneider, C. Adami, C. Andrade, C. Angulo-Valdez, C. Douzet, C. Dubois, C. Limonta, D. Akl, D. Berdikhan, D. Darson, D. Dornic, D. Dutton, D. L\\'opez-C\\'amara, D. Reichart, D. Schlekat, D. Turpin, E. Abdikamalov, E. Bernaud, E.G. Elhosseiny, E. Moreno M\\'endez, F. Colas, F.D. Romanov, F. Dux, F. Fortin, F. Magnani, F. S\\'anchez-\\'Alvarez, H. Koehn, H. Peng, J. Chen, J. de Wit, J.-G. Ducoin, J.J. Geng, J.-L. Atteia, J. Liu, J. Mao, J.-P. Rivet, K. Barkaoui, L. Almeida, L.C. Menegazzi, L. Garc\\'ia-Garc\\'ia, L. Slavcheva-Mihova, L.T. Wang, M. Freeberg, M. Gillon, M. Jel\\'inek, M. Ma\\v{s}ek, M. Molham, M. Odeh, M. Pereyra, M. Pillas, M. Tanasan, M.W. Coughlin, N.A. Rakotondrainibe, N. Globus, N. Guessoum, N. Kochiashvili, N.R. Butler, N. Sasaki, P.-A. Duverne, P. Bendjoya, P. Gokuldass, P. Hello, P.T.H. Pang, Q. Andr\\'e, R. Gill, R. Hellot, R. Inasaridze, R.L. Becerra, R. Strausbaugh, S. Alshamsi, S. Antier, S. Basa, S. Boissier, S. Brunier, S. Karpov, S. Leonini, S. Oates, S. Z\\'u\\~niga-Fern\\'andez, T. Dietrich, T. du Laz, T. Hussenot-Desenonges, T. Laskar, T. Pradier, T.R. Sun, V. Aivazyan, W. Corradi, W.H. Lee, W. Mercier, W. Zheng, X.F. Wang, X.Y. Li, Y.H.M. Hendy, Y.L. Hua, Y.S. Yan, Z.M. Wang","submitted_at":"2026-03-09T16:17:52Z","abstract_excerpt":"Most long gamma-ray bursts (GRBs) exhibit afterglows broadly consistent with external forward-shock emission, typically described by smooth broken power-law decays in the multiband light curve. However, a minority of well-sampled GRBs deviate from this behavior, including GRB 250129A. This object shows multiple late-time rebrightenings at X-ray and optical wavelengths. Rebrightenings are often attributed to energy injection from prolonged central engine activity, refreshed shocks from delayed shell collisions, density jumps in the ambient medium, or angular jet structure and viewing-angle effe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2603.08555","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/2603.08555/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"}