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Title: Features of the Energy Spectrum of Cosmic Rays above 2.5 × 10 18 eV Using the Pierre Auger Observatory

Abstract

We report a measurement of the energy spectrum of cosmic rays above 2.5×10 18 eV based on 215030 events. New results are presented: at about 1.3×10 19 eV, the spectral index changes from 2.51±0.03(stat)±0.05(syst) to 3.05±0.05(stat)±0.10(syst), evolving to 5.1±0.3(stat)±0.1(syst) beyond 5×10 19 eV, while no significant dependence of spectral features on the declination is seen in the accessible range. These features of the spectrum can be reproduced in models with energy-dependent mass composition. The energy density in cosmic rays above 5×10 18 eV is [5.66±0.03(stat)±1.40(syst)]×10 53 erg Mpc -3.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
The Pierre Auger Collaboration
OSTI Identifier:
1661744
Alternate Identifier(s):
OSTI ID: 1668401
Report Number(s):
arXiv:2008.06488; FERMILAB-PUB-20-431-E-TD
Journal ID: ISSN 0031-9007; PRLTAO; 121106
Grant/Contract Number:  
AC02-07CH11359; FR02-04ER41300; FG02-99ER41107; SC0011689
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 125 Journal Issue: 12; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmic ray & astroparticle detectors; cosmic ray acceleration; cosmic ray composition & spectra; cosmic ray propagation; cosmic ray sorces

Citation Formats

Aab, A., Abreu, P., Aglietta, M., Albury, J. M., Allekotte, I., Almela, A., Alvarez Castillo, J., Alvarez-Muñiz, J., Alves Batista, R., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Araújo Ferreira, P. R., Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Barreira Luz, R. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Bister, T., Biteau, J., Blanco, A., Blazek, J., Bleve, C., Boháčová, M., Boncioli, D., Bonifazi, C., Bonneau Arbeletche, L., Borodai, N., Botti, A. M., Brack, J., Bretz, T., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K. S., Caccianiga, L., Calcagni, L., Cancio, A., Canfora, F., Caracas, I., Carceller, J. M., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Chinellato, J. A., Choi, K., Chudoba, J., Chytka, L., Clay, R. W., Cobos Cerutti, A. C., Colalillo, R., Coleman, A., Coluccia, M. R., Conceição, R., Condorelli, A., Consolati, G., Contreras, F., Convenga, F., Covault, C. E., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., de Almeida, R. M., de Jesús, J., de Jong, S. J., De Mauro, G., de Mello Neto, J. R. T., De Mitri, I., de Oliveira, J., de Oliveira Franco, D., de Souza, V., De Vito, E., Debatin, J., del Río, M., Deligny, O., Dembinski, H., Dhital, N., Di Giulio, C., Di Matteo, A., Díaz Castro, M. L., Dobrigkeit, C., D’Olivo, J. C., Dorosti, Q., dos Anjos, R. C., Dova, M. T., Ebr, J., Engel, R., Epicoco, I., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Fick, B., Figueira, J. M., Filipčič, A., Fodran, T., Freire, M. M., Fujii, T., Fuster, A., Galea, C., Galelli, C., García, B., Garcia Vegas, A. L., Gemmeke, H., Gesualdi, F., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glombitza, J., Gobbi, F., Gollan, F., Golup, G., Gómez Berisso, M., Gómez Vitale, P. F., Gongora, J. P., González, N., Goos, I., Góra, D., Gorgi, A., Gottowik, M., Grubb, T. D., Guarino, F., Guedes, G. P., Guido, E., Hahn, S., Halliday, R., Hampel, M. R., Hansen, P., Harari, D., Harvey, V. M., Haungs, A., Hebbeker, T., Heck, D., Hill, G. C., Hojvat, C., Hörandel, J. R., Horvath, P., Hrabovský, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., Johnsen, J. A., Jurysek, J., Kääpä, A., Kampert, K. H., Keilhauer, B., Kemp, J., Klages, H. O., Kleifges, M., Kleinfeller, J., Köpke, M., Kukec Mezek, G., Lago, B. L., LaHurd, D., Lang, R. G., Leigui de Oliveira, M. A., Lenok, V., Letessier-Selvon, A., Lhenry-Yvon, I., Lo Presti, D., Lopes, L., López, R., Lorek, R., Luce, Q., Lucero, A., Machado Payeras, A., Malacari, M., Mancarella, G., Mandat, D., Manning, B. C., Manshanden, J., Mantsch, P., Marafico, S., Mariazzi, A. G., Mariş, I. C., Marsella, G., Martello, D., Martinez, H., Martínez Bravo, O., Mastrodicasa, M., Mathes, H. J., Matthews, J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Miramonti, L., Mockler, D., Mollerach, S., Montanet, F., Morello, C., Mostafá, M., Müller, A. L., Muller, M. A., Mulrey, K., Mussa, R., Muzio, M., Namasaka, W. M., Nellen, L., Nguyen, P. H., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., Nožka, L., Nucita, A., Núñez, L. A., Palatka, M., Pallotta, J., Panetta, M. P., Papenbreer, P., Parente, G., Parra, A., Pech, M., Pedreira, F., Pȩkala, J., Pelayo, R., Peña-Rodriguez, J., Perez Armand, J., Perlin, M., Perrone, L., Peters, C., Petrera, S., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Pont, B., Pothast, M., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Ristori, P., Rizi, V., Rodrigues de Carvalho, W., Rodriguez Fernandez, G., Rodriguez Rojo, J., Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Salina, G., Sanabria Gomez, J. D., Sánchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento-Cano, C., Sato, R., Savina, P., Schäfer, C., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schlüter, F., Schmidt, D., Scholten, O., Schovánek, P., Schröder, F. G., Schröder, S., Schulz, A., Sciutto, S. J., Scornavacche, M., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Šmída, R., Sommers, P., Soriano, J. F., Souchard, J., Squartini, R., Stadelmaier, M., Stanca, D., Stanič, S., Stasielak, J., Stassi, P., Streich, A., Suárez-Durán, M., Sudholz, T., Suomijärvi, T., Supanitsky, A. D., Šupík, J., Szadkowski, Z., Taboada, A., Tapia, A., Timmermans, C., Tkachenko, O., Tobiska, P., Todero Peixoto, C. J., Tomé, B., Torralba Elipe, G., Travaini, A., Travnicek, P., Trimarelli, C., Trini, M., Tueros, M., Ulrich, R., Unger, M., Urban, M., Vaclavek, L., Vacula, M., Valdés Galicia, J. F., Valiño, I., Valore, L., van Vliet, A., Varela, E., Vargas Cárdenas, B., Vásquez-Ramírez, A., Veberič, D., Ventura, C., Vergara Quispe, I. D., Verzi, V., Vicha, J., Villaseñor, L., Vink, J., Vorobiov, S., Wahlberg, H., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczyński, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Zepeda, A., Ziolkowski, M., Zuccarello, F., and The Pierre Auger Collaboration. Features of the Energy Spectrum of Cosmic Rays above 2.5 × 10 18     eV Using the Pierre Auger Observatory. United States: N. p., 2020. Web. doi:10.1103/PhysRevLett.125.121106.
Aab, A., Abreu, P., Aglietta, M., Albury, J. M., Allekotte, I., Almela, A., Alvarez Castillo, J., Alvarez-Muñiz, J., Alves Batista, R., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Araújo Ferreira, P. R., Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Barreira Luz, R. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Bister, T., Biteau, J., Blanco, A., Blazek, J., Bleve, C., Boháčová, M., Boncioli, D., Bonifazi, C., Bonneau Arbeletche, L., Borodai, N., Botti, A. M., Brack, J., Bretz, T., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K. S., Caccianiga, L., Calcagni, L., Cancio, A., Canfora, F., Caracas, I., Carceller, J. M., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Chinellato, J. A., Choi, K., Chudoba, J., Chytka, L., Clay, R. W., Cobos Cerutti, A. C., Colalillo, R., Coleman, A., Coluccia, M. R., Conceição, R., Condorelli, A., Consolati, G., Contreras, F., Convenga, F., Covault, C. E., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., de Almeida, R. M., de Jesús, J., de Jong, S. J., De Mauro, G., de Mello Neto, J. R. T., De Mitri, I., de Oliveira, J., de Oliveira Franco, D., de Souza, V., De Vito, E., Debatin, J., del Río, M., Deligny, O., Dembinski, H., Dhital, N., Di Giulio, C., Di Matteo, A., Díaz Castro, M. L., Dobrigkeit, C., D’Olivo, J. C., Dorosti, Q., dos Anjos, R. C., Dova, M. T., Ebr, J., Engel, R., Epicoco, I., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Fick, B., Figueira, J. M., Filipčič, A., Fodran, T., Freire, M. M., Fujii, T., Fuster, A., Galea, C., Galelli, C., García, B., Garcia Vegas, A. L., Gemmeke, H., Gesualdi, F., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glombitza, J., Gobbi, F., Gollan, F., Golup, G., Gómez Berisso, M., Gómez Vitale, P. F., Gongora, J. P., González, N., Goos, I., Góra, D., Gorgi, A., Gottowik, M., Grubb, T. D., Guarino, F., Guedes, G. P., Guido, E., Hahn, S., Halliday, R., Hampel, M. R., Hansen, P., Harari, D., Harvey, V. M., Haungs, A., Hebbeker, T., Heck, D., Hill, G. C., Hojvat, C., Hörandel, J. R., Horvath, P., Hrabovský, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., Johnsen, J. A., Jurysek, J., Kääpä, A., Kampert, K. H., Keilhauer, B., Kemp, J., Klages, H. O., Kleifges, M., Kleinfeller, J., Köpke, M., Kukec Mezek, G., Lago, B. L., LaHurd, D., Lang, R. G., Leigui de Oliveira, M. A., Lenok, V., Letessier-Selvon, A., Lhenry-Yvon, I., Lo Presti, D., Lopes, L., López, R., Lorek, R., Luce, Q., Lucero, A., Machado Payeras, A., Malacari, M., Mancarella, G., Mandat, D., Manning, B. C., Manshanden, J., Mantsch, P., Marafico, S., Mariazzi, A. G., Mariş, I. C., Marsella, G., Martello, D., Martinez, H., Martínez Bravo, O., Mastrodicasa, M., Mathes, H. J., Matthews, J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Miramonti, L., Mockler, D., Mollerach, S., Montanet, F., Morello, C., Mostafá, M., Müller, A. L., Muller, M. A., Mulrey, K., Mussa, R., Muzio, M., Namasaka, W. M., Nellen, L., Nguyen, P. H., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., Nožka, L., Nucita, A., Núñez, L. A., Palatka, M., Pallotta, J., Panetta, M. P., Papenbreer, P., Parente, G., Parra, A., Pech, M., Pedreira, F., Pȩkala, J., Pelayo, R., Peña-Rodriguez, J., Perez Armand, J., Perlin, M., Perrone, L., Peters, C., Petrera, S., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Pont, B., Pothast, M., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Ristori, P., Rizi, V., Rodrigues de Carvalho, W., Rodriguez Fernandez, G., Rodriguez Rojo, J., Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Salina, G., Sanabria Gomez, J. D., Sánchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento-Cano, C., Sato, R., Savina, P., Schäfer, C., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schlüter, F., Schmidt, D., Scholten, O., Schovánek, P., Schröder, F. G., Schröder, S., Schulz, A., Sciutto, S. J., Scornavacche, M., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Šmída, R., Sommers, P., Soriano, J. F., Souchard, J., Squartini, R., Stadelmaier, M., Stanca, D., Stanič, S., Stasielak, J., Stassi, P., Streich, A., Suárez-Durán, M., Sudholz, T., Suomijärvi, T., Supanitsky, A. D., Šupík, J., Szadkowski, Z., Taboada, A., Tapia, A., Timmermans, C., Tkachenko, O., Tobiska, P., Todero Peixoto, C. J., Tomé, B., Torralba Elipe, G., Travaini, A., Travnicek, P., Trimarelli, C., Trini, M., Tueros, M., Ulrich, R., Unger, M., Urban, M., Vaclavek, L., Vacula, M., Valdés Galicia, J. F., Valiño, I., Valore, L., van Vliet, A., Varela, E., Vargas Cárdenas, B., Vásquez-Ramírez, A., Veberič, D., Ventura, C., Vergara Quispe, I. D., Verzi, V., Vicha, J., Villaseñor, L., Vink, J., Vorobiov, S., Wahlberg, H., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczyński, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Zepeda, A., Ziolkowski, M., Zuccarello, F., & The Pierre Auger Collaboration. Features of the Energy Spectrum of Cosmic Rays above 2.5 × 10 18     eV Using the Pierre Auger Observatory. United States. doi:10.1103/PhysRevLett.125.121106.
Aab, A., Abreu, P., Aglietta, M., Albury, J. M., Allekotte, I., Almela, A., Alvarez Castillo, J., Alvarez-Muñiz, J., Alves Batista, R., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Araújo Ferreira, P. R., Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Barreira Luz, R. J., Becker, K. H., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Biermann, P. L., Bister, T., Biteau, J., Blanco, A., Blazek, J., Bleve, C., Boháčová, M., Boncioli, D., Bonifazi, C., Bonneau Arbeletche, L., Borodai, N., Botti, A. M., Brack, J., Bretz, T., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K. S., Caccianiga, L., Calcagni, L., Cancio, A., Canfora, F., Caracas, I., Carceller, J. M., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Chinellato, J. A., Choi, K., Chudoba, J., Chytka, L., Clay, R. W., Cobos Cerutti, A. C., Colalillo, R., Coleman, A., Coluccia, M. R., Conceição, R., Condorelli, A., Consolati, G., Contreras, F., Convenga, F., Covault, C. E., Dasso, S., Daumiller, K., Dawson, B. R., Day, J. A., de Almeida, R. M., de Jesús, J., de Jong, S. J., De Mauro, G., de Mello Neto, J. R. T., De Mitri, I., de Oliveira, J., de Oliveira Franco, D., de Souza, V., De Vito, E., Debatin, J., del Río, M., Deligny, O., Dembinski, H., Dhital, N., Di Giulio, C., Di Matteo, A., Díaz Castro, M. L., Dobrigkeit, C., D’Olivo, J. C., Dorosti, Q., dos Anjos, R. C., Dova, M. T., Ebr, J., Engel, R., Epicoco, I., Erdmann, M., Escobar, C. O., Etchegoyen, A., Falcke, H., Farmer, J., Farrar, G., Fauth, A. C., Fazzini, N., Feldbusch, F., Fenu, F., Fick, B., Figueira, J. M., Filipčič, A., Fodran, T., Freire, M. M., Fujii, T., Fuster, A., Galea, C., Galelli, C., García, B., Garcia Vegas, A. L., Gemmeke, H., Gesualdi, F., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glombitza, J., Gobbi, F., Gollan, F., Golup, G., Gómez Berisso, M., Gómez Vitale, P. F., Gongora, J. P., González, N., Goos, I., Góra, D., Gorgi, A., Gottowik, M., Grubb, T. D., Guarino, F., Guedes, G. P., Guido, E., Hahn, S., Halliday, R., Hampel, M. R., Hansen, P., Harari, D., Harvey, V. M., Haungs, A., Hebbeker, T., Heck, D., Hill, G. C., Hojvat, C., Hörandel, J. R., Horvath, P., Hrabovský, M., Huege, T., Hulsman, J., Insolia, A., Isar, P. G., Johnsen, J. A., Jurysek, J., Kääpä, A., Kampert, K. H., Keilhauer, B., Kemp, J., Klages, H. O., Kleifges, M., Kleinfeller, J., Köpke, M., Kukec Mezek, G., Lago, B. L., LaHurd, D., Lang, R. G., Leigui de Oliveira, M. A., Lenok, V., Letessier-Selvon, A., Lhenry-Yvon, I., Lo Presti, D., Lopes, L., López, R., Lorek, R., Luce, Q., Lucero, A., Machado Payeras, A., Malacari, M., Mancarella, G., Mandat, D., Manning, B. C., Manshanden, J., Mantsch, P., Marafico, S., Mariazzi, A. G., Mariş, I. C., Marsella, G., Martello, D., Martinez, H., Martínez Bravo, O., Mastrodicasa, M., Mathes, H. J., Matthews, J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Michal, S., Micheletti, M. I., Miramonti, L., Mockler, D., Mollerach, S., Montanet, F., Morello, C., Mostafá, M., Müller, A. L., Muller, M. A., Mulrey, K., Mussa, R., Muzio, M., Namasaka, W. M., Nellen, L., Nguyen, P. H., Niculescu-Oglinzanu, M., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., Nožka, L., Nucita, A., Núñez, L. A., Palatka, M., Pallotta, J., Panetta, M. P., Papenbreer, P., Parente, G., Parra, A., Pech, M., Pedreira, F., Pȩkala, J., Pelayo, R., Peña-Rodriguez, J., Perez Armand, J., Perlin, M., Perrone, L., Peters, C., Petrera, S., Pierog, T., Pimenta, M., Pirronello, V., Platino, M., Pont, B., Pothast, M., Privitera, P., Prouza, M., Puyleart, A., Querchfeld, S., Rautenberg, J., Ravignani, D., Reininghaus, M., Ridky, J., Riehn, F., Risse, M., Ristori, P., Rizi, V., Rodrigues de Carvalho, W., Rodriguez Fernandez, G., Rodriguez Rojo, J., Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Salina, G., Sanabria Gomez, J. D., Sánchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sarmiento-Cano, C., Sato, R., Savina, P., Schäfer, C., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schlüter, F., Schmidt, D., Scholten, O., Schovánek, P., Schröder, F. G., Schröder, S., Schulz, A., Sciutto, S. J., Scornavacche, M., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Šmída, R., Sommers, P., Soriano, J. F., Souchard, J., Squartini, R., Stadelmaier, M., Stanca, D., Stanič, S., Stasielak, J., Stassi, P., Streich, A., Suárez-Durán, M., Sudholz, T., Suomijärvi, T., Supanitsky, A. D., Šupík, J., Szadkowski, Z., Taboada, A., Tapia, A., Timmermans, C., Tkachenko, O., Tobiska, P., Todero Peixoto, C. J., Tomé, B., Torralba Elipe, G., Travaini, A., Travnicek, P., Trimarelli, C., Trini, M., Tueros, M., Ulrich, R., Unger, M., Urban, M., Vaclavek, L., Vacula, M., Valdés Galicia, J. F., Valiño, I., Valore, L., van Vliet, A., Varela, E., Vargas Cárdenas, B., Vásquez-Ramírez, A., Veberič, D., Ventura, C., Vergara Quispe, I. D., Verzi, V., Vicha, J., Villaseñor, L., Vink, J., Vorobiov, S., Wahlberg, H., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczyński, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., Zavrtanik, M., Zehrer, L., Zepeda, A., Ziolkowski, M., Zuccarello, F., and The Pierre Auger Collaboration. Wed . "Features of the Energy Spectrum of Cosmic Rays above 2.5 × 10 18     eV Using the Pierre Auger Observatory". United States. doi:10.1103/PhysRevLett.125.121106.
@article{osti_1661744,
title = {Features of the Energy Spectrum of Cosmic Rays above 2.5 × 10 18     eV Using the Pierre Auger Observatory},
author = {Aab, A. and Abreu, P. and Aglietta, M. and Albury, J. M. and Allekotte, I. and Almela, A. and Alvarez Castillo, J. and Alvarez-Muñiz, J. and Alves Batista, R. and Anastasi, G. A. and Anchordoqui, L. and Andrada, B. and Andringa, S. and Aramo, C. and Araújo Ferreira, P. R. and Asorey, H. and Assis, P. and Avila, G. and Badescu, A. M. and Bakalova, A. and Balaceanu, A. and Barbato, F. and Barreira Luz, R. J. and Becker, K. H. and Bellido, J. A. and Berat, C. and Bertaina, M. E. and Bertou, X. and Biermann, P. L. and Bister, T. and Biteau, J. and Blanco, A. and Blazek, J. and Bleve, C. and Boháčová, M. and Boncioli, D. and Bonifazi, C. and Bonneau Arbeletche, L. and Borodai, N. and Botti, A. M. and Brack, J. and Bretz, T. and Briechle, F. L. and Buchholz, P. and Bueno, A. and Buitink, S. and Buscemi, M. and Caballero-Mora, K. S. and Caccianiga, L. and Calcagni, L. and Cancio, A. and Canfora, F. and Caracas, I. and Carceller, J. M. and Caruso, R. and Castellina, A. and Catalani, F. and Cataldi, G. and Cazon, L. and Cerda, M. and Chinellato, J. A. and Choi, K. and Chudoba, J. and Chytka, L. and Clay, R. W. and Cobos Cerutti, A. C. and Colalillo, R. and Coleman, A. and Coluccia, M. R. and Conceição, R. and Condorelli, A. and Consolati, G. and Contreras, F. and Convenga, F. and Covault, C. E. and Dasso, S. and Daumiller, K. and Dawson, B. R. and Day, J. A. and de Almeida, R. M. and de Jesús, J. and de Jong, S. J. and De Mauro, G. and de Mello Neto, J. R. T. and De Mitri, I. and de Oliveira, J. and de Oliveira Franco, D. and de Souza, V. and De Vito, E. and Debatin, J. and del Río, M. and Deligny, O. and Dembinski, H. and Dhital, N. and Di Giulio, C. and Di Matteo, A. and Díaz Castro, M. L. and Dobrigkeit, C. and D’Olivo, J. C. and Dorosti, Q. and dos Anjos, R. C. and Dova, M. T. and Ebr, J. and Engel, R. and Epicoco, I. and Erdmann, M. and Escobar, C. O. and Etchegoyen, A. and Falcke, H. and Farmer, J. and Farrar, G. and Fauth, A. C. and Fazzini, N. and Feldbusch, F. and Fenu, F. and Fick, B. and Figueira, J. M. and Filipčič, A. and Fodran, T. and Freire, M. M. and Fujii, T. and Fuster, A. and Galea, C. and Galelli, C. and García, B. and Garcia Vegas, A. L. and Gemmeke, H. and Gesualdi, F. and Gherghel-Lascu, A. and Ghia, P. L. and Giaccari, U. and Giammarchi, M. and Giller, M. and Glombitza, J. and Gobbi, F. and Gollan, F. and Golup, G. and Gómez Berisso, M. and Gómez Vitale, P. F. and Gongora, J. P. and González, N. and Goos, I. and Góra, D. and Gorgi, A. and Gottowik, M. and Grubb, T. D. and Guarino, F. and Guedes, G. P. and Guido, E. and Hahn, S. and Halliday, R. and Hampel, M. R. and Hansen, P. and Harari, D. and Harvey, V. M. and Haungs, A. and Hebbeker, T. and Heck, D. and Hill, G. C. and Hojvat, C. and Hörandel, J. R. and Horvath, P. and Hrabovský, M. and Huege, T. and Hulsman, J. and Insolia, A. and Isar, P. G. and Johnsen, J. A. and Jurysek, J. and Kääpä, A. and Kampert, K. H. and Keilhauer, B. and Kemp, J. and Klages, H. O. and Kleifges, M. and Kleinfeller, J. and Köpke, M. and Kukec Mezek, G. and Lago, B. L. and LaHurd, D. and Lang, R. G. and Leigui de Oliveira, M. A. and Lenok, V. and Letessier-Selvon, A. and Lhenry-Yvon, I. and Lo Presti, D. and Lopes, L. and López, R. and Lorek, R. and Luce, Q. and Lucero, A. and Machado Payeras, A. and Malacari, M. and Mancarella, G. and Mandat, D. and Manning, B. C. and Manshanden, J. and Mantsch, P. and Marafico, S. and Mariazzi, A. G. and Mariş, I. C. and Marsella, G. and Martello, D. and Martinez, H. and Martínez Bravo, O. and Mastrodicasa, M. and Mathes, H. J. and Matthews, J. and Matthiae, G. and Mayotte, E. and Mazur, P. O. and Medina-Tanco, G. and Melo, D. and Menshikov, A. and Merenda, K. -D. and Michal, S. and Micheletti, M. I. and Miramonti, L. and Mockler, D. and Mollerach, S. and Montanet, F. and Morello, C. and Mostafá, M. and Müller, A. L. and Muller, M. A. and Mulrey, K. and Mussa, R. and Muzio, M. and Namasaka, W. M. and Nellen, L. and Nguyen, P. H. and Niculescu-Oglinzanu, M. and Niechciol, M. and Nitz, D. and Nosek, D. and Novotny, V. and Nožka, L. and Nucita, A. and Núñez, L. A. and Palatka, M. and Pallotta, J. and Panetta, M. P. and Papenbreer, P. and Parente, G. and Parra, A. and Pech, M. and Pedreira, F. and Pȩkala, J. and Pelayo, R. and Peña-Rodriguez, J. and Perez Armand, J. and Perlin, M. and Perrone, L. and Peters, C. and Petrera, S. and Pierog, T. and Pimenta, M. and Pirronello, V. and Platino, M. and Pont, B. and Pothast, M. and Privitera, P. and Prouza, M. and Puyleart, A. and Querchfeld, S. and Rautenberg, J. and Ravignani, D. and Reininghaus, M. and Ridky, J. and Riehn, F. and Risse, M. and Ristori, P. and Rizi, V. and Rodrigues de Carvalho, W. and Rodriguez Fernandez, G. and Rodriguez Rojo, J. and Roncoroni, M. J. and Roth, M. and Roulet, E. and Rovero, A. C. and Ruehl, P. and Saffi, S. J. and Saftoiu, A. and Salamida, F. and Salazar, H. and Salina, G. and Sanabria Gomez, J. D. and Sánchez, F. and Santos, E. M. and Santos, E. and Sarazin, F. and Sarmento, R. and Sarmiento-Cano, C. and Sato, R. and Savina, P. and Schäfer, C. and Scherini, V. and Schieler, H. and Schimassek, M. and Schimp, M. and Schlüter, F. and Schmidt, D. and Scholten, O. and Schovánek, P. and Schröder, F. G. and Schröder, S. and Schulz, A. and Sciutto, S. J. and Scornavacche, M. and Shellard, R. C. and Sigl, G. and Silli, G. and Sima, O. and Šmída, R. and Sommers, P. and Soriano, J. F. and Souchard, J. and Squartini, R. and Stadelmaier, M. and Stanca, D. and Stanič, S. and Stasielak, J. and Stassi, P. and Streich, A. and Suárez-Durán, M. and Sudholz, T. and Suomijärvi, T. and Supanitsky, A. D. and Šupík, J. and Szadkowski, Z. and Taboada, A. and Tapia, A. and Timmermans, C. and Tkachenko, O. and Tobiska, P. and Todero Peixoto, C. J. and Tomé, B. and Torralba Elipe, G. and Travaini, A. and Travnicek, P. and Trimarelli, C. and Trini, M. and Tueros, M. and Ulrich, R. and Unger, M. and Urban, M. and Vaclavek, L. and Vacula, M. and Valdés Galicia, J. F. and Valiño, I. and Valore, L. and van Vliet, A. and Varela, E. and Vargas Cárdenas, B. and Vásquez-Ramírez, A. and Veberič, D. and Ventura, C. and Vergara Quispe, I. D. and Verzi, V. and Vicha, J. and Villaseñor, L. and Vink, J. and Vorobiov, S. and Wahlberg, H. and Watson, A. A. and Weber, M. and Weindl, A. and Wiencke, L. and Wilczyński, H. and Winchen, T. and Wirtz, M. and Wittkowski, D. and Wundheiler, B. and Yushkov, A. and Zapparrata, O. and Zas, E. and Zavrtanik, D. and Zavrtanik, M. and Zehrer, L. and Zepeda, A. and Ziolkowski, M. and Zuccarello, F. and The Pierre Auger Collaboration},
abstractNote = {We report a measurement of the energy spectrum of cosmic rays above 2.5×1018 eV based on 215030 events. New results are presented: at about 1.3×1019 eV, the spectral index changes from 2.51±0.03(stat)±0.05(syst) to 3.05±0.05(stat)±0.10(syst), evolving to 5.1±0.3(stat)±0.1(syst) beyond 5×1019 eV, while no significant dependence of spectral features on the declination is seen in the accessible range. These features of the spectrum can be reproduced in models with energy-dependent mass composition. The energy density in cosmic rays above 5×1018 eV is [5.66±0.03(stat)±1.40(syst)]×1053 erg Mpc-3.},
doi = {10.1103/PhysRevLett.125.121106},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 12,
volume = 125,
place = {United States},
year = {2020},
month = {9}
}

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