학술논문
A Targeted Search for Point Sources of EeV Photons with the Pierre Auger Observatory
Document Type
article
Author
Aab, A; Abreu, P; Aglietta, M; Samarai, I Al; Albuquerque, IFM; Allekotte, I; Almela, A; Castillo, J Alvarez; Alvarez-Muñiz, J; Anastasi, GA; Anchordoqui, L; Andrada, B; Andringa, S; Aramo, C; Arqueros, F; Arsene, N; Asorey, H; Assis, P; Aublin, J; Avila, G; Badescu, AM; Balaceanu, A; Luz, RJ Barreira; Beatty, JJ; Becker, KH; Bellido, JA; Berat, C; Bertaina, ME; Bertou, X; Biermann, PL; Billoir, P; Biteau, J; Blaess, SG; Blanco, A; Blazek, J; Bleve, C; Boháčová, M; Boncioli, D; Bonifazi, C; Borodai, N; Botti, AM; Brack, J; Brancus, I; Bretz, T; Bridgeman, A; Briechle, FL; Buchholz, P; Bueno, A; Buitink, S; Buscemi, M; Caballero-Mora, KS; Caccianiga, L; Cancio, A; Canfora, F; Caramete, L; Caruso, R; Castellina, A; Cataldi, G; Cazon, L; Chavez, AG; Chinellato, JA; Chudoba, J; Clay, RW; Colalillo, R; Coleman, A; Collica, L; Coluccia, MR; Conceição, R; Contreras, F; Cooper, MJ; Coutu, S; Covault, CE; Cronin, J; D’Amico, S; Daniel, B; Dasso, S; Daumiller, K; Dawson, BR; de Almeida, RM; de Jong, SJ; De Mauro, G; de Mello Neto, JRT; De Mitri, I; de Oliveira, J; de Souza, V; Debatin, J; Deligny, O; Di Giulio, C; Di Matteo, A; Castro, ML Díaz; Diogo, F; Dobrigkeit, C; D’Olivo, JC; Dorosti, Q; dos Anjos, RC; Dova, MT; Dundovic, A; Ebr, J; Engel, R; Erdmann, M
Source
The Astrophysical Journal Letters. 837(2)
Subject
Language
Abstract
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.