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.

A Search for Photons with Energies Above 2 × 1017 eV Using Hybrid Data from the Low-Energy Extensions of the Pierre Auger Observatory / P. Abreu, M. Aglietta, J.M. Albury, I. Allekotte, K.A. Cheminant, A. Almela, J. Alvarez-Muñiz, R.A. Batista, J.A. Yebra, G.A. Anastasi, L. Anchordoqui, B. Andrada, S. Andringa, C. Aramo, P.R.A. Ferreira, E. Arnone, J.C.A. 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.B. Arbeletche, N. Borodai, A.M. Botti, J. Brack, T. Bretz, P.G.B. 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.C. Cerutti, R. Colalillo, A. Coleman, M.R. Coluccia, R. Conceição, A. Condorelli, G. Consolati, F. Contreras, F. Convenga, D.C. 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.D. 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.G. Vegas, H. Gemmeke, F. Gesualdi, A. Gherghel-Lascu, P.L. Ghia, U. Giaccari, M. Giammarchi, J. Glombitza, F. Gobbi, F. Gollan, G. Golup, M.G. Berisso, P.F.G. 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.K. Covilakam, H.O. Klages, M. Kleifges, J. Kleinfeller, F. Knapp, N. Kunka, B.L. Lago, N. Langner, M.A.L. de Oliveira, V. Lenok, A. Letessier-Selvon, I. Lhenry-Yvon, D.L. Presti, L. Lopes, R. López, L. Lu, Q. Luce, J.P. Lundquist, A.M. 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. Pȩkala, R. Pelayo, J. Peña-Rodriguez, E.E.P. Martins, J.P. Armand, C.P. 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.R. de Carvalho, J.R. 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.S. 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.T. Peixoto, B. Tomé, Z. Torrès, A. Travaini, P. Travnicek, C. Trimarelli, M. Tueros, R. Ulrich, M. Unger, L. Vaclavek, M. Vacula, J.F.V. Galicia, L. Valore, E. Varela, A. Vásquez-Ramírez, D. Veberič, C. Ventura, I.D.V. 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, N. Null. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - 933:2(2022 Jul 08), pp. 125.1-125.11. [10.3847/1538-4357/ac7393]

A Search for Photons with Energies Above 2 × 1017 eV Using Hybrid Data from the Low-Energy Extensions of the Pierre Auger Observatory

L. Caccianiga;C. Galelli;F.M. Mariani;L. Miramonti;V. Scherini;
2022

Abstract

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.
Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
Settore FIS/05 - Astronomia e Astrofisica
8-lug-2022
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/1033131
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