A Search for Photons with Energies Above 2 x 10(17) eV Using Hybrid Data from the Low-Energy Extensions of the Pierre Auger Observatory

The Pierre Auger Collaboration, P. Abreu, M. Aglietta,J. M. Albury,I. Allekotte,K. Almeida Cheminant,A. Almela, J. Alvarez-Muñiz,R. Alves Batista,J. Ammerman Yebra,G. A. Anastasi,L. Anchordoqui, B. Andrada, S. Andringa,C. Aramo, P. R. Araújo Ferreira,E. Arnone,J. C. Arteaga Velázquez,H. Asorey,P. Assis,G. Avila, E. Avocone,A. M. Badescu,A. Bakalova, A. Balaceanu,F. Barbato,J. A. Bellido, C. Berat, M. E. Bertaina,G. Bhatta,P. L. Biermann, V. Binet, K. Bismark, T. Bister,J. Biteau, J. Blazek,C. Bleve,J. Blümer,M. Boháčová,D. Boncioli,C. Bonifazi,L. Bonneau Arbeletche,N. Borodai,A. M. Botti, J. Brack, T. Bretz,P. G. Brichetto Orchera,F. L. Briechle,P. Buchholz,A. Bueno,S. Buitink,M. Buscemi, M. Büsken,K. S. Caballero-Mora,L. Caccianiga, F. Canfora,I. Caracas,R. Caruso,A. Castellina,F. Catalani,G. Cataldi,L. Cazon,M. Cerda,J. A. Chinellato,J. Chudoba, L. Chytka,R. W. Clay,A. C. Cobos Cerutti,R. Colalillo,A. Coleman,M. R. Coluccia,R. Conceição,A. Condorelli,G. Consolati,F. Contreras,F. Convenga,D. Correia dos Santos,C. E. Covault,S. Dasso, K. Daumiller,B. R. Dawson,J. A. Day,R. M. de Almeida,J. de Jesús,S. J. de Jong,J. R. T. de Mello Neto,I. De Mitri,J. de Oliveira,D. de Oliveira Franco,F. de Palma,V. de Souza,E. De Vito,A. Del Popolo,M. del Río,O. Deligny, L. Deval,A. di Matteo, M. Dobre,C. Dobrigkeit,J. C. D'Olivo,L. M. Domingues Mendes,R. C. dos Anjos,M. T. Dova, J. Ebr,R. Engel,I. Epicoco,M. Erdmann,C. O. Escobar, A. Etchegoyen,H. Falcke,J. Farmer,G. Farrar,A. C. Fauth,N. Fazzini,F. Feldbusch, F. Fenu,B. Fick,J. M. Figueira, A. Filipčič, T. Fitoussi, T. Fodran,T. Fujii,A. Fuster, C. Galea, C. Galelli,B. García,A. L. Garcia Vegas, H. Gemmeke,F. Gesualdi,A. Gherghel-Lascu,P. L. Ghia, U. Giaccari,M. Giammarchi,J. Glombitza,F. Gobbi, F. Gollan,G. Golup,M. Gómez Berisso,P. F. Gómez Vitale,J. P. Gongora,J. M. González,N. González, I. Goos,D. Góra,A. Gorgi, M. Gottowik,T. D. Grubb,F. Guarino,G. P. Guedes,E. Guido,S. Hahn, P. Hamal,M. R. Hampel,P. Hansen,D. Harari,V. M. Harvey,A. Haungs, T. Hebbeker,D. Heck,G. C. Hill, C. Hojvat,J. R. Hörandel,P. Horvath, M. Hrabovský,T. Huege,A. Insolia,P. G. Isar,P. Janecek,J. A. Johnsen,J. Jurysek, A. Kääpä,K. H. Kampert, B. Keilhauer, A. Khakurdikar,V. V. Kizakke Covilakam,H. O. Klages, M. Kleifges, J. Kleinfeller, F. Knapp,N. Kunka,B. L. Lago, N. Langner,M. A. Leigui de Oliveira, V. Lenok, A. Letessier-Selvon,I. Lhenry-Yvon,D. Lo Presti,L. Lopes,R. López,L. Lu, Q. Luce,J. P. Lundquist,A. Machado Payeras, G. Mancarella,D. Mandat,B. C. Manning, J. Manshanden, P. Mantsch, S. Marafico, F. M. Mariani,A. G. Mariazzi,I. C. Mariş,G. Marsella,D. Martello,S. Martinelli,O. Martínez Bravo, M. Mastrodicasa,H. J. Mathes,J. Matthews, G. Matthiae,E. Mayotte, S. Mayotte,P. O. Mazur, G. Medina-Tanco, D. Melo, A. Menshikov,S. Michal,M. I. Micheletti,L. Miramonti,S. Mollerach,F. Montanet, L. Morejon, C. Morello,M. Mostafá, A. L. Müller, M. A. Muller, K. Mulrey,R. Mussa, M. Muzio,W. M. Namasaka, A. Nasr-Esfahani,L. Nellen, G. Nicora, M. Niculescu-Oglinzanu,M. Niechciol,D. Nitz, I. Norwood,D. Nosek,V. Novotny,L. Nožka,A Nucita,L. A. Núñez,C. Oliveira, M. Palatka, J. Pallotta, P. Papenbreer, G. Parente,A. Parra, J. Pawlowsky, M. Pech,J. Pękala,R. Pelayo,J. Peña-Rodriguez,E. E. Pereira Martins,J. Perez Armand,C. Pérez Bertolli,L. Perrone,S. Petrera, C. Petrucci, T. Pierog, M. Pimenta,V. Pirronello, M. Platino, B. Pont, M. Pothast,P. Privitera, M. Prouza,A. Puyleart,S. Querchfeld,J. Rautenberg, D. Ravignani, M. Reininghaus,J. Ridky, F. Riehn,M. Risse,V. Rizi,W. Rodrigues de Carvalho,J. Rodriguez Rojo,M. J. Roncoroni,S. Rossoni,M. Roth,E. Roulet,A. C. Rovero, P. Ruehl,A. Saftoiu,M. Saharan, F. Salamida,H. Salazar,G. Salina,J. D. Sanabria Gomez,F. Sánchez,E. M. Santos,E. Santos,F. Sarazin,R. Sarmento,C. Sarmiento-Cano,R. Sato,P. Savina, C. M. Schäfer, V. Scherini,H. Schieler, M. Schimassek, M. Schimp,F. Schlüter,D. Schmidt,O. Scholten,H. Schoorlemmer, P. Schovánek,F. G. Schröder,J. Schulte,T. Schulz,S. J. Sciutto, M. Scornavacche, A. Segreto,S. Sehgal,R. C. Shellard,G. Sigl, G. Silli,O. Sima, R. Smau, R. Šmída, P. Sommers,J. F. Soriano, R. Squartini, M. Stadelmaier, D. Stanca,S. Stanič, J. Stasielak, P. Stassi, A. Streich,M. Suárez-Durán, T. Sudholz, T. Suomijärvi,A. D. Supanitsky,Z. Szadkowski,A. Tapia, C. Taricco, C. Timmermans,O. Tkachenko, P. Tobiska,C. J. Todero Peixoto,B. Tomé, Z. Torrès,A. Travaini, P. Travnicek, C. Trimarelli,M. Tueros,R. Ulrich,M. Unger, L. Vaclavek, M. Vacula,J. F. Valdés Galicia, L. Valore,E. Varela,A. Vásquez-Ramírez,D. Veberič,C. Ventura,I. D. Vergara Quispe, V. Verzi, J. Vicha,J. Vink, S. Vorobiov,H. Wahlberg,C. Watanabe,A. A. Watson,A. Weindl,L. Wiencke, H. Wilczyński, D. Wittkowski, B. Wundheiler,A. Yushkov, O. Zapparrata, E. Zas,D. Zavrtanik,M. Zavrtanik, L. Zehrer

ASTROPHYSICAL JOURNAL(2022)

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摘要
Ultra-high-energy photons with energies exceeding 10(17) eV offer a wealth of connections to different aspects of cosmic-ray astrophysics as well as to gamma-ray and neutrino astronomy. The recent observations of photons with energies in the 10(15) eV range further motivate searches for even higher-energy photons. In this paper, we present a search for photons with energies exceeding 2 x 10(17) eV using about 5.5 yr of hybrid data from the low-energy extensions of the Pierre Auger Observatory. The upper limits on the integral photon flux derived here are the most stringent ones to date in the energy region between 10(17) and 10(18) eV.
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