Large-scale Cosmic-ray Anisotropies with 19 yr of Data from the Pierre Auger Observatory

作者：A. Abdul Halim, P. Abreu, M. Aglietta, I. Allekotte, Kévin Almeida Cheminant, A. Almela, Roberto Aloisio, Jaime Álvarez-Muñiz, Antonio Ambrosone, Juan Ammerman Yebra, Gioacchino Alex Anastasi, L. Anchordoqui, B. Andrada, Luciana Andrade Dourado, S. Andringa, L. Apollonio, C. Aramo, P. R. Araújo Ferreira, E. Arnone, J. C. Arteaga Velázquez, P. Assis, G. Ávila, E. Avocone, Alena Bakalová, F. Barbato, Adriel Bartz Mocellin, Jose A. Bellido, C. Berat, M. E. Bertaina, Gopal Bhatta, Marta Bianciotto, P. L. Biermann, Virginia Binet, K. Bismark, Teresa Bister, Jonathan Biteau, J. Blazek, C. Bleve, J. Blümer, M. Boháčová, Denise Boncioli, C. Bonifazi, Luan Bonneau Arbeletche, Nataliia Borodai, J. Brack, P. Gabriel Brichetto Orchera, F. L. Briechle, A. Bueno, S. Buitink, M. Buscemi, M. Büsken, Anthony Bwembya, K. S. Caballero‐Mora, Sergio Cabana-Freire, Lorenzo Caccianiga, F. Campuzano, R. Caruso, A. Castellina, Fernando Catalani, G. Cataldi, Lorenzo Cazon, M. Cerda, Berenika Čermáková, A. Cermenati, J. A. Chinellato, J. Chudoba, L. Chytka, R. W. Clay, Agustín Cobos Cerutti, R. Colalillo, Ricardo Conceição, Antonio Condorelli, G. Consolati, M. Conte, Fabio Convenga, D. dos Santos, Paulo J. Costa, C. E. Covault, M. Cristinziani, C. S. Cruz Sanchez, S. Dasso, K. Daumiller, B. R. Dawson, R. M. de Almeida, Beatriz de Errico, J. de Jesús, S. J. de Jong, J. R. T. de Mello Neto, I. De Mitri, Jaime de Oliveira, Danelise de Oliveira Franco, F. de Palma, V. de Souza, Emanuele De Vito, A. Del Popolo, O. Deligny, N. Denner, L. Deval, A. di Matteo, C. Dobrigkeit, J. C. D’Olivo, Luis Miguel Domingues Mendes, Qader Dorosti, J. C. dos Anjos, R. C. dos Anjos, Jan Ebr, Fiona H. Ellwanger, M. Emam, R. Engel, Italo Epicoco, M. Erdmann, A. Etchegoyen, Carmelo Evoli, H. Falcke, G. Farrar, A. C. Fauth, Tim Fehler, F. Feldbusch, Armando Fernandes, B. Fick, J.M. Figueira, P. Filip, A. Filipčič, T. Fitoussi, Benjamin Flaggs, Tomáš Fodran, M. Freitas, Toshihiro Fujii, A. Fuster, C. Galea, B. Garćıa, Chloé Gaudu, P. L. Ghia, U. Giaccari, F. Gobbi, F. Gollan, G. Golup, M. Gómez Berisso, P. F. Gómez Vitale, J. P. Gongora, J.M. González, Nicolás Martín González, D. Góra, A. Gorgi, M. Gottowik, F. Guarino, G.P. Guedes, Eleonora Guido, Lukas Gülzow, S. Hahn, P. Hamal, Matías Rolf Hampel, P. Hansen, V. M. Harvey, A. Haungs, T. Hebbeker, C. Hojvat, J. R. Hörandel, Pavel Horváth, Miroslav Hrabovský, T. Huege, A. Insolia, P. G. Isar, P. Janeček, Vlastimil Jílek, J. Jurysek, K.‐H. Kampert, B. Keilhauer, A. Khakurdikar, Varada Varma Kizakke Covilakam, H.O. Klages, M. Kleifges, F. Knapp, J. Köhler, F. Krieger, Margita Kubátová, N. Kunka, Bruno L. Lago, N. Langner, M.A. Leigui de Oliveira, Yago Lema-Capeans, A. Letessier‐Selvon, Isabelle Lhenry-Yvon, L. Lopes, J. P. Lundquist, A. Machado Payeras, D. Mandat, Bradley C. Manning, P. Mantsch, F. M. Mariani, A. G. Mariazzi, Ioana Codrina Mariş, G. Marsella, D. Martello, Sara Martinelli, O. Martínez Bravo, Miguel A. Martins, H.J. Mathes, J. Matthews, G. Matthiae, Eric William Mayotte, S. Mayotte, P. O. Mazur, G. Medina-Tanco, J. Meinert, D. Melo, A. Menshikov, Carmen Merx, Stanislav Michal, M. I. Micheletti, L. Miramonti, Silvia Mollerach, F. Montanet, Leonel Morejón, Katharine Mulrey, R. Mussa, W. M. Namasaka, Shigeru Negi, L. Nellen, Khoa Nguyen, G. Nicora, Marcus Niechciol, D. Nitz, Dalibor Nosek, V. Novotny, L. Nožka, A. Nucita, Luis A. Núñez, C. Oliveira, M. Palatka, J. Pallotta, Subhasis Panja, G. Parente, T. Paulsen, J. Pawlowsky, M. Pech, Jan Pękala, R. Pelayo, Vincent Pelgrims, Luiz Augusto Pereira, E. E. Pereira Martins, Carmina Pérez Bertolli, L. Perrone, S. Petrera, C. Petrucci, T. Pierog, M. Pimenta, M. Platino, Bjarni Pont, M. Pothast, Mohsen Pourmohammad Shahvar, P. Privitera, M. Prouza, Sven Querchfeld, J. Rautenberg, Diego Ravignani, João Vítor Reginatto Akim, Alex Reuzki, J. Řídký, Felix Riehn, M. Risse, V. Rizi, E. Rodriguez, J. Rodriguez Rojo, M. J. Roncoroni, S. Rossoni, M. Roth, E. Roulet, A. C. Rovero, A. Sǎftoiu, M. Saharan, F. Salamida, H. Salazar, G. Salina, P. Sampathkumar, Jose Sanabria Gomez, F. Sánchez, Edivaldo Moura Santos, Eva Santos, F. Sarazin, R. Sarmento, R. Sato, Christoph M. Schäfer, V. Scherini, H. Schieler, Martin Schimassek, M. Schimp, D. Schmidt, O. Scholten, Harm Schoorlemmer, P. Schovánek, Frank Schröder, J. Schulte, T. Schulz, Sergio J Sciutto, M. Scornavacche, Adrian Sedoski, A. Segreto, S. Sehgal, S. U. Shivashankara, G. Sigl, Katarína Simkova, F. Simon, Radomir Šmída, P. Sommers, R. Squartini, Maximilian Stadelmaier, S. Stanič, Jarosław Stasielak, P. Stassi, S. Strähnz, M. Straub, T. Suomijärvi, A. D. Supanitsky, Zuzana Svozilikova, Z. Szadkowski, Fedor Tairli, A. Tapia, C. Taricco, C. Timmermans, O. Tkachenko, P. Tobiska, Carlos J. Todero Peixoto, B. Tomé, Z. Torrès, A. Travaini, P. Travnicek, Matias Jorge Tueros, M. Unger, Rukije Uzeiroska, Lukáš Vaclavek, Martin Vacula, Jose F. Valdés Galicia, L. Valore, Enrique Varela, V. Vašíčková, A. Vásquez-Ramírez, D. Veberič, Indira D. Vergara Quispe, V. Verzi, J. Vicha, J. Vink, S. Vorobiov, C. Watanabe, A. A. Watson, A. Weindl, Martin Weitz, L. Wiencke, H. Wilczyński, David Wittkowski, B. Wundheiler, Bin Yue, A. Yushkov, Orazio Zapparrata, E. Zas, D. Zavrtanik, M. Zavrtanik · 发表于：The Astrophysical Journal · 年份：2024 · DOI：10.3847/1538-4357/ad843b · 被引用次数：19 · 研究领域：Astrophysics and Cosmic Phenomena、Dark Matter and Cosmic Phenomena、Neutrino Physics Research

Abstract Results are presented for the measurement of large-scale anisotropies in the arrival directions of ultra–high-energy cosmic rays detected at the Pierre Auger Observatory during 19 yr of operation, prior to AugerPrime, the upgrade of the observatory. The 3D dipole amplitude and direction are reconstructed above 4 EeV in four energy bins. Besides the established dipolar anisotropy in R.A. above 8 EeV, the Fourier amplitude of the 8–16 EeV energy bin is now also above the 5 σ discovery level. No time variation of the dipole moment above 8 EeV is found, setting an upper limit to the rate of change of such variations of 0.3% yr −1 at the 95% confidence level. Additionally, the results for the angular power spectrum are shown, demonstrating no other statistically significant multipoles. The results for the equatorial dipole component down to 0.03 EeV are presented, using for the first time a data set obtained with a trigger that has been optimized for lower energies. Finally, model predictions are discussed and compared with observations, based on two source emission scenarios obtained in the combined fit of spectrum and composition above 0.6 EeV.