A search for photons with energies above 2 × 10 17 eV using hybrid data from the low-energy extensions of the Pierre Auger Observatory

Ultra-high-energy photons with energies exceeding 1017 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 1015 eV range further motivate searches for even higher-energy photons. In this paper, we present a search for photons with energies exceeding 2 × 1017 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 1017 and 1018 eV.

P. G. Isar | J. M. Figueira | T. D. Grubb | S. Buitink | H. Falcke | P. Sommers | J. Blazek | A. Popolo | J. Chudoba | M. Dova | O. Tkachenko | G. Matthiae | P. Privitera | J. Řídký | R. Shellard | D. Zavrtanik | T. Hebbeker | L. Chytka | H. Wahlberg | S. Jong | V. Rizi | G. Salina | C. Hojvat | A. Letessier-Selvon | P. Mantsch | L. Anchordoqui | J. Johnsen | P. Trávníček | M. Muzio | R. Clay | R. Mussa | A. Almela | A. Cerutti | A. Etchegoyen | B. Garc'ia | M. G. Berisso | M. Hampel | D. Harari | M. Platino | A. Supanitsky | A. Badescu | H. Mathes | S. Dasso | V. Novotny | M. Giammarchi | L. Miramonti | J. Chinellato | T. Bretz | H. Asorey | A. Haungs | T. Huege | M. Kleifges | V. Lenok | F. Schroder | I. Mitri | C. Taricco | H. Gemmeke | L. Wiencke | G. Consolati | S. Petrera | P. Stassi | J. Lundquist | C. Covault | L. Nellen | J. Rautenberg | C. Escobar | G. Guedes | K. Kampert | M. Unger | D. Presti | F. Barbato | F. Palma | K. Caballero-Mora | S. Andringa | V. Verzi | G. Golup | D. G'ora | F. Salamida | T. Pierog | O. Scholten | J. Juryšek | V. Pirronello | M. Zavrtanik | I. Allekotte | J. Biteau | V. Souza | J. Ebr | D. Mandát | C. Morello | D. Nosek | M. Palatka | M. Pech | M. Prouza | E. Santos | A. Segreto | C. Peixoto | S. Vorobiov | I. Epicoco | R. Sarmento | R. Pelayo | C. Aramo | P. Janeček | F. Feldbusch | C. Bertolli | E. Arnone | A. Nucita | H. Schoorlemmer | D. Heck | P. Biermann | R. Almeida | M. Oliveira | A. Balaceanu | A. Gherghel-Lascu | M. Niculescu-Oglinzanu | A. Saftoiu | D. Stanca | A. Fauth | B. Dawson | J. Pallotta | J. Horandel | P. Assis | W. Carvalho | M. Tueros | H. Schieler | A. Weindl | R. Batista | M. Mostaf'a | M. Aglietta | J. Albury | G. A. Anastasi | B. Andrada | G. Avila | J. Bellido | M. Bertaina | C. Bleve | M. Boh'avcov'a | C. Bonifazi | N. Borodai | A. Botti | J. Brack | F. Briechle | M. Buscemi | L. Caccianiga | F. Canfora | R. Caruso | A. Castellina | F. Catalani | L. Cazon | R. Colalillo | A. Coleman | M. Coluccia | R. Conceiccao | F. Contreras | K. Daumiller | J. M. Neto | O. Deligny | C. Dobrigkeit | J. D'Olivo | J. Farmer | N. Fazzini | F. Fenu | B. Fick | A. Filipvcivc | A. Fuster | P. Ghia | U. Giaccari | J. Glombitza | P. F. G. Vitale | N. Gonz'alez | I. Goos | A. Gorgi | M. Gottowik | F. Guarino | P. Hansen | V. M. Harvey | M. Hrabovsk'y | A. Insolia | A. Kaapa | B. Keilhauer | H. Klages | J. Kleinfeller | N. Kunka | B. Lago | I. Lhenry-Yvon | R. L'opez | Q. Luce | I. Marics | G. Marsella | D. Martello | O. Bravo | J. Matthews | E. Mayotte | P. Mazur | G. Medina-Tanco | A. Menshikov | S. Michal | M. Micheletti | S. Mollerach | F. Montanet | A. Muller | M. Muller | M. Niechciol | D. Nitz | L. Novzka | P. Papenbreer | G. Parente | A. Parra | J. Pkekala | J. Peña-Rodríguez | L. Perrone | B. Pont | A. Puyleart | S. Querchfeld | D. Ravignani | M. Reininghaus | F. Riehn | M. Risse | J. Rojo | M. Roncoroni | E. Roulet | A. Rovero | P. Ruehl | E. Santos | F. Sarazin | C. Sarmiento-cano | R. Sato | P. Savina | V. Scherini | M. Schimassek | M. Schimp | D. Schmidt | P. Schov'anek | S. Sciutto | G. Sigl | G. Silli | O. Sima | R. vSm'ida | J. F. Soriano | R. Squartini | S. Stanivc | J. Stasielak | A. Streich | M. Su'arez-Dur'an | T. Sudholz | T. Suomijarvi | Z. Szadkowski | J. Galicia | L. Valore | E. Varela | D. Veberivc | I. D. V. Quispe | J. Vicha | D. Wittkowski | B. Wundheiler | A. Yushkov | E. Zas | L. Zehrer | D. Boncioli | A. Matteo | T. Fujii | A. Tapia | K. Mulrey | G. Mancarella | J. Blumer | The Pierre Auger Collaboration P. Abreu | M. D. R'io | J. D. Gomez | R. Anjos | A. Mariazzi | A. Watson | J. P. Gongora | S. Mayotte | M. R. Hampel | G. Cataldi | P. Buchholz | M. Mastrodicasa | A. Bakalova | V. Binet | K. Bismark | I. Caracas | M. Cerda | A. Condorelli | F. Convenga | J. A. Day | L. Deval | T. Fitoussi | T. Fodran | C. Galelli | F. Gesualdi | F. Gobbi | F. Gollan | E. Guido | A. Khakurdikar | N. Langner | L. Lu | B. Manning | J. Manshanden | S. Marafico | S. Martinelli | W. M. Namasaka | A. Nasr-Esfahani | J. Pawlowsky | M. Pothast | S. Rossoni | J. Schulte | M. Scornavacche | S. Sehgal | M. Stadelmaier | Z. Torrès | A. Travaini | C. Trimarelli | L. Václavek | M. Vacula | C. Ventura | J. Vink | C. Watanabe | O. Zapparrata | F. Schluter | J. M. Gonz'alez | E. Martins | M. Pimenta | M. Erdmann | K. A. Cheminant | G. Bhatta | L. A. N'unez | K. Mulrey | G. Nicora | L. Arbeletche | A. V'asquez-Ram'irez | R. Engel | P. Ferreira | J. C. A. Vel'azquez | P. G. B. Orchera | A. Bueno | M. Busken | J. D. Jes'us | D. Franco | E. D. Vito | A. Vegas | P. Hamal | V. V. K. Covilakam | L. Lopes | A. Payeras | D. Melo | J. P. Armand | M. Roth | F. S'anchez | C. Schafer | C. Timmermans | R. Ulrich | T. Bister | M. Dobre | G. Farrar | C. Galea | G. C. Hill | F. Knapp | F. Mariani | Leonel Morejon | C. Oliveira | C. Petrucci | M. Saharan | T. Schulz | R. Smau | H. Wahlberg | J. Oliveira | D. D. Santos | H. Salazar | J. Alvarez-Muñiz | C. Bérat | P. Tobiska | B. Tom'e | P. Horváth | J. A. Yebra | E. Avocone | L. M. D. Mendes | S. Hahn | I. Norwood | H. Wilczy'nski | R. M. Almeida | J. D. Oliveira | J. Vícha | R. A. Batista | O. Sima | J. D. M. Neto | O. M. Bravo | C. T. Peixoto | J. F. V. Galicia | Hernán Asorey | A. Bakalová | C. Sarmiento-Cano | D. L. Presti | A. Bălăceanu | A. Săftoiu | L. Mendes | P. Vitale | R. Smău | J. M. Gonz'alez | L. Lu | A. Haungs | O. Sima | M. Bertaina | J. Chinellato | T. Hebbeker | G. Hill | G. Nicora

[1]  F. Montanet,et al.  Diffuse Flux of Ultra-high-energy Photons from Cosmic-Ray Interactions in the Disk of the Galaxy and Implications for the Search for Decaying Super-heavy Dark Matter , 2022, The Astrophysical Journal.

[2]  P. G. Isar,et al.  The energy spectrum of cosmic rays beyond the turn-down around $10^{17}$ eV as measured with the surface detector of the Pierre Auger Observatory , 2021, 2109.13400.

[3]  X. P. Zhang,et al.  Discovery of the Ultrahigh-energy Gamma-Ray Source LHAASO J2108+5157 , 2021, The Astrophysical Journal Letters.

[4]  D. Hooper,et al.  Hunting super-heavy dark matter with ultra-high energy photons , 2021, 2105.12895.

[5]  Danzengluobu,et al.  Ultrahigh-energy photons up to 1.4 petaelectronvolts from 12 γ-ray Galactic sources , 2021, Nature.

[6]  P. G. Isar,et al.  A search for ultra-high-energy photons at the Pierre Auger Observatory exploiting air-shower universality , 2021, Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021).

[7]  J. C. Arteaga-Velázquez,et al.  Evidence of 200 TeV Photons from HAWC J1825-134 , 2020, 2012.15275.

[8]  A. Castellina AugerPrime: the Pierre Auger Observatory Upgrade , 2019, EPJ Web of Conferences.

[9]  K. H. Lee,et al.  Constraints on the diffuse photon flux with energies above 1018 eV using the surface detector of the Telescope Array experiment , 2018, Astroparticle Physics.

[10]  J. R. Horandel,et al.  KASCADE-Grande Limits on the Isotropic Diffuse Gamma-Ray Flux between 100 TeV and 1 EeV , 2017, 1710.02889.

[11]  J. Bellido Depth of maximum of air-shower profiles at the Pierre Auger Observatory: Measurements above $10^{17.2}$ eV and Composition Implications , 2017 .

[12]  T. Hebbeker,et al.  Search for photons with energies above 10 18 eV using the hybrid detector of the Pierre Auger Observatory , 2016 .

[13]  J. Ellis,et al.  Post-inflationary gravitino production revisited , 2015, 1512.05701.

[14]  T. Hebbeker,et al.  Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory , 2016 .

[15]  I. A. M. Flores,et al.  Identifying clouds over the Pierre Auger Observatory using infrared satellite data , 2013 .

[16]  A. Supanitsky,et al.  A new composition-sensitive parameter for ultra-high energy cosmic rays , 2011, 1104.3399.

[17]  The Pierre Auger Collaboration Upper limit on the cosmic-ray photon flux above 10^19 eV using the surface detector of the Pierre Auger Observatory , 2007, 0712.1147.

[18]  D. Zavrtanik,et al.  The Lidar system of the Pierre Auger Observatory , 2006, astro-ph/0609063.

[19]  P. Homola,et al.  Characteristics of geomagnetic cascading of ultra-high energy photons at the southern and northern sites of the Pierre Auger Observatory , 2006, astro-ph/0608101.

[20]  S. Argiro,et al.  The offline software framework of the Pierre Auger Observatory , 2005, IEEE Nuclear Science Symposium Conference Record, 2005.

[21]  P. G. Isar,et al.  The Pierre Auger Cosmic Ray Observatory , 2015, 1502.01323.