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A targeted search for point sources of EeV photons with the Pierre Auger Observatory

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arxiv 1612.04155 v2 pith:BSGE3Z62 submitted 2016-12-13 astro-ph.HE hep-ph

A targeted search for point sources of EeV photons with the Pierre Auger Observatory

The Pierre Auger Collaboration: A. Aab , P. Abreu , M. Aglietta , I. Al Samarai , I.F.M. Albuquerque , I. Allekotte , A. Almela , J. Alvarez Castillo
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J. Alvarez-Mu\~niz G.A. Anastasi L. Anchordoqui B. Andrada S. Andringa C. Aramo F. Arqueros N. Arsene H. Asorey P. Assis J. Aublin G. Avila A.M. Badescu A. Balaceanu R.J. Barreira Luz J.J. Beatty K.H. Becker J.A. Bellido C. Berat M.E. Bertaina X. Bertou P.L. Biermann P. Billoir J. Biteau S.G. Blaess A. Blanco J. Blazek C. Bleve M. Boh\'a\v{c}ov\'a D. Boncioli C. Bonifazi N. Borodai A.M. Botti J. Brack I. Brancus T. Bretz A. Bridgeman F.L. Briechle P. Buchholz A. Bueno S. Buitink M. Buscemi K.S. Caballero-Mora L. Caccianiga A. Cancio F. Canfora L. Caramete R. Caruso A. Castellina G. Cataldi L. Cazon A.G. Chavez J.A. Chinellato J. Chudoba R.W. Clay R. Colalillo A. Coleman L. Collica M.R. Coluccia R. Concei\c{c}\~ao F. Contreras M.J. Cooper S. Coutu C.E. Covault J. Cronin S. D'Amico B. Daniel S. Dasso K. Daumiller B.R. Dawson R.M. de Almeida S.J. de Jong G. De Mauro J.R.T. de Mello Neto I. De Mitri J. de Oliveira V. de Souza J. Debatin O. Deligny C. Di Giulio A. Di Matteo M.L. D\'iaz Castro F. Diogo C. Dobrigkeit J.C. D'Olivo Q. Dorosti R.C. dos Anjos M.T. Dova A. Dundovic J. Ebr R. Engel M. Erdmann M. Erfani C.O. Escobar J. Espadanal A. Etchegoyen H. Falcke G. Farrar A.C. Fauth N. Fazzini B. Fick J.M. Figueira A. Filip\v{c}i\v{c} O. Fratu M.M. Freire T. Fujii A. Fuster R. Gaior B. Garc\'ia D. Garcia-Pinto F. Gat\'e H. Gemmeke A. Gherghel-Lascu P.L. Ghia U. Giaccari M. Giammarchi M. Giller D. G{\l}as C. Glaser G. Golup M. G\'omez Berisso P.F. G\'omez Vitale N. Gonz\'alez A. Gorgi P. Gorham A.F. Grillo T.D. Grubb F. Guarino G.P. Guedes M.R. Hampel P. Hansen D. Harari T.A. Harrison J.L. Harton A. Haungs T. Hebbeker D. Heck P. Heimann A.E. Herve G.C. Hill C. Hojvat E. Holt P. Homola J.R. H\"orandel P. Horvath M. Hrabovsk\'y T. Huege J. Hulsman A. Insolia P.G. Isar I. Jandt S. Jansen J.A. Johnsen M. Josebachuili A. K\"a\"ap\"a O. Kambeitz K.H. Kampert I. Katkov B. Keilhauer E. Kemp J. Kemp R.M. Kieckhafer H.O. Klages M. Kleifges J. Kleinfeller R. Krause N. Krohm D. Kuempel G. Kukec Mezek N. Kunka A. Kuotb Awad D. LaHurd M. Lauscher R. Legumina M.A. Leigui de Oliveira A. Letessier-Selvon I. Lhenry-Yvon K. Link L. Lopes R. L\'opez A. L\'opez Casado Q. Luce A. Lucero M. Malacari M. Mallamaci D. Mandat P. Mantsch A.G. Mariazzi I.C. Mari\c{s} G. Marsella D. Martello H. Martinez O. Mart\'inez Bravo J.J. Mas\'ias Meza H.J. Mathes S. Mathys J. Matthews J.A.J. Matthews G. Matthiae E. Mayotte P.O. Mazur C. Medina G. Medina-Tanco D. Melo A. Menshikov M.I. Micheletti L. Middendorf I.A. Minaya L. Miramonti B. Mitrica D. Mockler S. Mollerach F. Montanet C. Morello M. Mostaf\'a A.L. M\"uller G. M\"uller M.A. Muller S. M\"uller R. Mussa I. Naranjo L. Nellen P.H. Nguyen M. Niculescu-Oglinzanu M. Niechciol L. Niemietz T. Niggemann D. Nitz D. Nosek V. Novotny H. No\v{z}ka L.A. N\'u\~nez L. Ochilo F. Oikonomou A. Olinto M. Palatka J. Pallotta P. Papenbreer G. Parente A. Parra T. Paul M. Pech F. Pedreira J. P\k{e}kala R. Pelayo J. Pe\~na-Rodriguez L. A. S. Pereira M. Perl\'in L. Perrone C. Peters S. Petrera J. Phuntsok R. Piegaia T. Pierog P. Pieroni M. Pimenta V. Pirronello M. Platino M. Plum C. Porowski R.R. Prado P. Privitera M. Prouza E.J. Quel S. Querchfeld S. Quinn R. Ramos-Pollan J. Rautenberg D. Ravignani B. Revenu J. Ridky M. Risse P. Ristori V. Rizi W. Rodrigues de Carvalho G. Rodriguez Fernandez J. Rodriguez Rojo D. Rogozin M.J. Roncoroni M. Roth E. Roulet A.C. Rovero P. Ruehl S.J. Saffi A. Saftoiu F. Salamida H. Salazar A. Saleh F. Salesa Greus G. Salina F. S\'anchez P. Sanchez-Lucas E.M. Santos E. Santos F. Sarazin R. Sarmento C.A. Sarmiento R. Sato M. Schauer V. Scherini H. Schieler M. Schimp D. Schmidt O. Scholten P. Schov\'anek F.G. Schr\"oder A. Schulz J. Schulz J. Schumacher S.J. Sciutto A. Segreto M. Settimo A. Shadkam R.C. Shellard G. Sigl G. Silli O. Sima A. \'Smia{\l}kowski R. \v{S}m\'ida G.R. Snow P. Sommers S. Sonntag J. Sorokin R. Squartini D. Stanca S. Stani\v{c} J. Stasielak P. Stassi F. Strafella F. Suarez M. Suarez Dur\'an T. Sudholz T. Suomij\"arvi A.D. Supanitsky J. Swain Z. Szadkowski A. Taboada O.A. Taborda A. Tapia V.M. Theodoro C. Timmermans C.J. Todero Peixoto L. Tomankova B. Tom\'e G. Torralba Elipe P. Travnicek M. Trini R. Ulrich M. Unger M. Urban J.F. Vald\'es Galicia I. Vali\~no L. Valore G. van Aar P. van Bodegom A.M. van den Berg A. van Vliet E. Varela B. Vargas C\'ardenas G. Varner J.R. V\'azquez R.A. V\'azquez D. Veberi\v{c} I.D. Vergara Quispe V. Verzi J. Vicha L. Villase\~nor S. Vorobiov H. Wahlberg O. Wainberg D. Walz A.A. Watson M. Weber A. Weindl L. Wiencke H. Wilczy\'nski T. Winchen M. Wirtz D. Wittkowski B. Wundheiler L. Yang D. Yelos A. Yushkov E. Zas D. Zavrtanik M. Zavrtanik A. Zepeda B. Zimmermann M. Ziolkowski Z. Zong F. Zuccarello
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classification astro-ph.HE hep-ph
keywords sourcessearchcandidategalacticaugeremissionextragalacticlimits
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Simultaneous measurements of air showers with the fluorescence and surface detectors of the Pierre Auger Observatory allow a sensitive search for EeV photon point sources. Several Galactic and extragalactic candidate objects are grouped in classes to reduce the statistical penalty of many trials from that of a blind search and are analyzed for a significant excess above the background expectation. The presented search does not find any evidence for photon emission at candidate sources, and combined $p$-values for every class are reported. Particle and energy flux upper limits are given for selected candidate sources. These limits significantly constrain predictions of EeV proton emission models from non-transient Galactic and nearby extragalactic sources, as illustrated for the particular case of the Galactic center region.

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