{"paper":{"title":"Observation of the Moon and Sun shadows with cosmic rays at an average energy of $\\text{7}{\\times}\\text{10}^\\text{17}\\,$eV","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Abdul Halim, A. Ambrosone, A.A. Watson, A. Bakalova, A. Baluta, A. Bartz Mocellin, A. Bwembya, A. Castellina, A.C. Cobos Cerutti, A. Cermenati, A.C. Fauth, A.C. Rovero, A. Del Popolo, A. Di Matteo, A.D. Supanitsky, A. Etchegoyen, A. Fernandes, A. Filip\\v{c}i\\v{c}, A. Franco, A. Fuster, A.G. Mariazzi, A. Gorgi, A. Haungs, A. Insolia, A. Klingel, A. Letessier-Selvon, A. Mart\\'inez-Mendez, A. Menshikov, A. Novikov, A. Nucita, A. Reuzki, A. Saftoiu, A. Sedoski, A. Tapia, A. Travaini, A. V\\'asquez-Ram\\'irez, A. Weindl, A. Yushkov, B. Andrada, B. de Errico, B. Fick, B. Flaggs, B. Garc\\'ia, B. Keilhauer, B.L. Lago, B.R. Dawson, B. Rocha Moldes, B. Tom\\'e, B. \\v{C}erm\\'akov\\'a, B. Wundheiler, B. Yue, C. Aramo, C. Berat, C. Bonifazi, C. Dobrigkeit, C.E. Covault, C. Evoli, C. Galea, C. Gaudu, C. Glaser, C. Hojvat, C.J. Todero Peixoto, C. Marinelli, C. Merx, C. Oliveira, C. P\\'erez Bertolli, C. Priyadarshi, C.S. Cruz Sanchez, C. Taricco, C. Timmermans, C. Trimarelli, D. Boncioli, D. Correia dos Santos, D. de Oliveira Franco, D. G\\'ora, D. Mandat, D. Martello, D. Melo, D. Nitz, D. Nosek, D. Ravignani, D. Schmidt, D. Veberi\\v{c}, D. Zavrtanik, E. Avocone, E. De Vito, E. Mayotte, E. Rodriguez, E. Roulet, E. Santos, E.-T. de Boone, E. Varela, E. Zas, F. Barbato, F. Catalani, F. Convenga, F. de Palma, F. Ellwanger, F. Feldbusch, F. Gobbi, F. Gollan, F.G. Schr\\\"oder, F. Guarino, F. Krieger, F. Montanet, F.M. S\\'anchez Rodriguez, F. Riehn, F. Salamida, F. S\\'anchez, F. Sarazin, F. Simon, F. Tairli, G. Avila, G. Cataldi, G. Consolati, G. Farrar, G. Golup, G. Marsella, G. Matthiae, G. Medina-Tanco, G. Nicora, G. Parente, G.P. Guedes, G. Rodriguez Fernandez, G. Salina, G. Sigl, H. Falcke, H.-J. Mathes, H.O. Klages, H. Salazar, H. Schieler, H. Schoorlemmer, H. Wilczy\\'nski, I. Allekotte, I.C. Mari\\c{s}, I. De Mitri, I.D. Vergara Quispe, I. Lhenry-Yvon, I. Vaiman, J.A. Chinellato, J. Alvarez-Mu\\~niz, J. Ammerman Yebra, J. Biteau, J. Blazek, J. Bl\\\"umer, J. Brack, J.B. Vuta, J. Cara\\c{c}a-Valente, J.C. Arteaga Vel\\'azquez, J.C. D'Olivo, J. Chudoba, J. de Jes\\'us, J.D. Sanabria Gomez, J. Ebr, J.F. Vald\\'es Galicia, J. K\\\"ohler, J. Matthews, J.M. Figueira, J. Ochoa, J. Pallotta, J.P. Behler, J.P. Gongora, J. P\\k{e}kala, J. Rautenberg, J.R. H\\\"orandel, J. Ridky, J. Rodriguez Rojo, J.R.T. de Mello Neto, J. Schulte, J. Stasielak, J. Vicha, J.V. Reginatto Akim, K. Almeida Cheminant, K. Bismark, K. Cerny, K. Daumiller, K. Denner Syrokvas, K.-H. Kampert, K. Mulrey, K. Nguyen, K. Pytel, K.S. Caballero-Mora, K. Simkova, L. Anchordoqui, L. Andrade Dourado, L.A. N\\'u\\~nez, L. Apollonio, L. Caccianiga, L. Cazon, L. Chytka, L. Deval, L. G\\\"ulzow, L. Lopes, L.M. Domingues Mendes, L. Miramonti, L. Morejon, L. Nellen, L. No\\v{z}ka, L. \\\"Ostman, L. Perrone, L. Vaclavek, L. Valore, L. Wiencke, M. Aglietta, M. Ahmed, M.A. Leigui de Oliveira, M.A. Martins, M. Bianciotto, M. Boh\\'a\\v{c}ov\\'a, M. Cerda, M. Conte, M. Cristinziani, M.E. Bertaina, M. Erdmann, M. Fern\\'andez Alonso, M. Freitas, M. Giammarco, M. Gottowik, M. Havelka, M. Hrabovsk\\'y, M.I. Micheletti, M. Ismaiel, M. Kleifges, M. Kubatova, M. Mallamaci, M. Mogarkar, M. Niechciol, M. Olegario, M. Palatka, M. Pech, M. Pimenta, M. Platino, M. Prouza, M.R. Hampel, M. Risse, M. Roth, M. Saharan, M. Schimp, M. Scornavacche, M. Straub, M. Tueros, M. Unger, M. Vacula, M. Weitz, M. Zavrtanik, M.Z. Renn\\'o, N. Borodai, N. Denner, N. Gonz\\'alez, N. Kunka, N. Langner, N. Leal, N. San Martin, O. Batalla Cruz, O. Deligny, O. Mart\\'inez Bravo, O. Scholten, O. Tkachenko, P. Abreu, P. Assis, P.F. G\\'omez Vitale, P. Filip, P.G. Brichetto Orquera, P.G. Isar, P. Hamal, P. Hansen, P. Horvath, P. Janecek, P.J. Costa, P.L. Biermann, P.L. Ghia, P. Mantsch, P.O. Mazur, P. Privitera, P. Sampathkumar, P. Savina, P. Schov\\'anek, P. Sommers, P. Stassi, P. Tobiska, P. Travnicek, P. van Dillen, Q. Dorosti, R. Aloisio, R. Caruso, R.C. dos Anjos, R. Colalillo, R. Concei\\c{c}\\~ao, R. Engel, R.M. de Almeida, R. Mussa, R. Pelayo, R. Sarmento, R. Sato, R. Uzeiroska-Geyik, R. \\v{S}m\\'ida, R.W. Clay, S. Buitink, S. Cabana-Freire, S. Dasso, S.E. Nuza, S. Hahn, S.J. De Jong, S.J. Sciutto, S. Mancuso, S. Martinelli, S. Mayotte, S. Michal, S. Mollerach, S. Negi, S. Petrera, S. Querchfeld, S. Rossoni, S. Sehgal, S. Soares Sippert, S. Stani\\v{c}, S. Str\\\"ahnz, S.U. Shivashankara, S. Verpoest, S. Vorobiov, T. Bister, T. Dominguez, T. Fehler, T. Fujii, T. Hebbeker, The Pierre Auger Collaboration, T. Huege, T. Paulsen, T. Pierog, T.R. Caba Pineda, T. Schulz, T. Suomij\\\"arvi, U. Giaccari, V. Binet, V. de Souza, V. Jilek, V. Novotny, V. Rizi, V. Scherini, V. Va\\v{s}\\'i\\v{c}kov\\'a, V. Verzi, V.V. Kizakke Covilakam, W.M. Namasaka, Y. Balibrea, Y.C. Guerra, Y. Dominguez Ballesteros, Y. Lema-Capeans, Z. Svozilikova, Z. Szadkowski","submitted_at":"2026-08-05T10:13:56Z","abstract_excerpt":"Interactions of cosmic rays with the Moon and the Sun produce deficits in their arrival-direction distributions relative to an isotropic flux. Such shadows have been observed previously at energies between $10^{12}\\,$eV and $10^{16}\\,$eV. We report the first observation of the Moon and Sun shadows at cosmic-ray energies larger than about $10^{16}\\,$eV (average energy of $7\\times10^{17}\\,$eV), using data collected by the Pierre Auger Observatory. We employ data from three detector arrays covering $3000\\,\\text{km}^2$, $27\\,\\text{km}^2$, and $2\\,\\text{km}^2$, with spacings of $1500\\,\\text{m}$, $7"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.04658","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/2608.04658/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"}