AugerPrime: Status and first results
With the knowledge and statistical precision derived from two decades of measurement, the Pierre Auger Observatory has significantly deepened our understanding of ultra-high-energy cosmic rays while unearthing an increasingly complex astrophysical landscape and exposing tensions with hadronic interaction models. The field now demands the mass of individual cosmic-ray primaries as an observable with an exposure that only the 3000-square-kilometer surface array of the Observatory can provide. Access to the primary mass hinges on the disentanglement of the electromagnetic and muonic components of extensive air showers. To achieve this, scintillator and radio detectors have been installed atop each existing water-Cherenkov detector of the surface array, whose dynamic range has also been enhanced through the installation of small-area PMTs. Additionally, the timing and signal resolution of all detector stations have been improved through upgraded station electronics, and underground muon counters have been installed in a region of the array with denser spacing. As the commissioning of the final components of AugerPrime reaches its conclusion and the enhanced array comes fully online, we present the realization of its design, its performance, and the first results from this now multi-hybrid observatory.
Authors
- Belén Andrada
- Zbigniew Szadkowski (ORCID: https://orcid.org/0000-0002-2690-9912)
- Bruno L. Lago (ORCID: https://orcid.org/0000-0001-9672-0499)
- Marvin Gottowik (ORCID: https://orcid.org/0000-0001-7436-389X)
- Carla Taricco (ORCID: https://orcid.org/0000-0002-0129-5539)
- Giovanni Consolati (ORCID: https://orcid.org/0000-0003-3614-245X)
- S. Petrera (ORCID: https://orcid.org/0000-0002-6029-1255)
- Varada Varma Kizakke Covilakam (ORCID: https://orcid.org/0000-0001-5278-3172)
- G. Sigl (ORCID: https://orcid.org/0000-0002-4396-645X)
- Mateo Fernandez
- T. Huege (ORCID: https://orcid.org/0000-0002-2783-4772)
- Marta Bianciotto (ORCID: https://orcid.org/0000-0002-9599-3214)
- Nicolas Leal
- Carmina Pérez Bertolli (ORCID: https://orcid.org/0000-0002-9790-5732)
- Carlo Salvattore Cruz Sanchez (ORCID: https://orcid.org/0009-0002-6173-0974)
- Frank Schröder (ORCID: https://orcid.org/0000-0001-8495-7210)
- A. Bueno (ORCID: https://orcid.org/0000-0002-7439-4247)
- Gustavo Medina‐Tanco (ORCID: https://orcid.org/0000-0002-3202-319X)
- A. C. Fauth (ORCID: https://orcid.org/0000-0001-7239-0288)
- Enrico Arnone (ORCID: https://orcid.org/0000-0001-6740-5051)
- Enrique Varela (ORCID: https://orcid.org/0000-0003-0715-7513)
- O. Schölten (ORCID: https://orcid.org/0000-0003-3649-1254)
- Olena Tkachenko (ORCID: https://orcid.org/0000-0001-6393-7851)
- Lorenzo Cazon (ORCID: https://orcid.org/0000-0001-6748-8395)
- Pierpaolo Savina (ORCID: https://orcid.org/0000-0001-7670-554X)
- Lukáš Vaclavek (ORCID: https://orcid.org/0000-0002-0910-3415)
- B. R. Dawson (ORCID: https://orcid.org/0000-0002-4271-3055)
- Matteo Conte (ORCID: https://orcid.org/0000-0002-9932-224X)
- G. Salina (ORCID: https://orcid.org/0000-0003-1767-0724)
- A. Haungs (ORCID: https://orcid.org/0000-0002-9638-7574)
- Harm Schoorlemmer (ORCID: https://orcid.org/0000-0002-8999-9249)
- Dalibor Nosek (ORCID: https://orcid.org/0000-0001-6219-200X)
- G. Parente (ORCID: https://orcid.org/0000-0003-2847-0461)
- Paula Gina Isar (ORCID: https://orcid.org/0000-0002-1241-584X)
- Laura Valore (ORCID: https://orcid.org/0000-0003-2682-8378)
- Janning Meinert (ORCID: https://orcid.org/0000-0001-7582-3456)
- Emanuele De Vito (ORCID: https://orcid.org/0000-0003-2045-7588)
- M. Roth (ORCID: https://orcid.org/0000-0003-1281-4477)
- Adila Abdul Halim (ORCID: https://orcid.org/0000-0003-1218-1737)
- Gonzalo Rodriguez Fernandez (ORCID: https://orcid.org/0000-0002-4683-230X)
- Jiří Blažek (ORCID: https://orcid.org/0000-0002-5870-8947)
- Therese Paulsen
- Adriel Bartz Mocellin
- Berenika Čermáková
- S. J. de Jong (ORCID: https://orcid.org/0000-0002-3120-3367)
- V. Rizi (ORCID: https://orcid.org/0000-0002-5277-6527)
- Andres Travaini (ORCID: https://orcid.org/0000-0001-7875-2147)
- Alexey Yushkov (ORCID: https://orcid.org/0000-0001-5107-9116)
- K. Daumiller (ORCID: https://orcid.org/0000-0002-0527-4823)
- A. Insolia (ORCID: https://orcid.org/0000-0002-9040-1566)
- Lorenzo Caccianiga (ORCID: https://orcid.org/0000-0002-2245-5108)
- Darko Veberič (ORCID: https://orcid.org/0000-0003-2683-1526)
- María Isabel Micheletti (ORCID: https://orcid.org/0000-0002-1063-9938)
- A. Segreto (ORCID: https://orcid.org/0000-0001-7341-6603)
- L. Nellen (ORCID: https://orcid.org/0000-0003-1059-8731)
- Felicia Barbato (ORCID: https://orcid.org/0000-0003-0751-6731)
- Jan Pękala
- Alexandra Ramos Fernandes (ORCID: https://orcid.org/0000-0003-2054-4438)
- Gabriela Nicora (ORCID: https://orcid.org/0000-0001-7504-6423)
- Katarína Simkova (ORCID: https://orcid.org/0000-0003-2363-9846)
- R. Caruso (ORCID: https://orcid.org/0000-0003-1622-8731)
- I. Allekotte (ORCID: https://orcid.org/0000-0002-9624-3044)
- F. Sarazin (ORCID: https://orcid.org/0000-0001-5614-1986)
- Luis A. Núñez
- Chaitanya Priyadarshi (ORCID: https://orcid.org/0000-0002-9160-9617)
- Fernando Gollan (ORCID: https://orcid.org/0000-0002-0495-2768)
- M. Cristinziani (ORCID: https://orcid.org/0000-0003-3893-9171)
- E. Zas (ORCID: https://orcid.org/0000-0002-4430-8117)
- Clara Keiko Oliveira Watanabe
- Roberta Colalillo (ORCID: https://orcid.org/0000-0002-4179-9352)
- L. Miramonti (ORCID: https://orcid.org/0000-0002-2808-5363)
- F. Simon (ORCID: https://orcid.org/0000-0002-5978-0289)
- Juan Carlos D’Olivo
- F. Salamida (ORCID: https://orcid.org/0000-0002-9306-8447)
- P. Trávnı́ček (ORCID: https://orcid.org/0000-0002-1655-9584)
- Benjamin Flaggs (ORCID: https://orcid.org/0000-0002-5549-1869)
- P. Hamal (ORCID: https://orcid.org/0000-0003-3139-7234)
- A. D. Supanitsky (ORCID: https://orcid.org/0000-0002-6942-6216)
- Pedro J. Costa
- Maximilian Straub
- R. Mussa (ORCID: https://orcid.org/0000-0002-0294-9071)
- Camilla Petrucci
- Steffen Hahn (ORCID: https://orcid.org/0000-0001-5040-3666)
- Federico Maria Mariani
- Fiona H. Ellwanger
- A. Castellina (ORCID: https://orcid.org/0000-0002-0045-2467)
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- Denise Boncioli (ORCID: https://orcid.org/0000-0003-1186-9353)
- Martin Vacula (ORCID: https://orcid.org/0000-0003-4844-3962)
- Vladimír Novotný (ORCID: https://orcid.org/0000-0002-4319-4541)
- Miguel A. Martins (ORCID: https://orcid.org/0000-0002-7294-6204)
- F. Guarino (ORCID: https://orcid.org/0000-0003-1427-9885)
- Glennys R. Farrar (ORCID: https://orcid.org/0000-0003-2417-5975)
- M. Erdmann (ORCID: https://orcid.org/0000-0002-1653-1303)
- Jarosław Stasielak (ORCID: https://orcid.org/0000-0002-9284-7000)
- Shima Ujjani Shivashankara
- Alex Tapia (ORCID: https://orcid.org/0000-0003-0585-7161)
- P. Abreu (ORCID: https://orcid.org/0000-0002-9973-7314)
- C. Aramo (ORCID: https://orcid.org/0000-0002-8412-3846)
- M. Palatka (ORCID: https://orcid.org/0000-0003-2061-6059)
- I. De Mitri (ORCID: https://orcid.org/0000-0002-8665-1730)
- Antoine Letessier-Selvon
- K. S. Caballero‐Mora (ORCID: https://orcid.org/0000-0002-4042-3855)
- Antonio Franco (ORCID: https://orcid.org/0000-0001-7707-4241)
- Bjarni Pont (ORCID: https://orcid.org/0000-0002-2578-5364)
- Simone Rossoni
- S. Buitink (ORCID: https://orcid.org/0000-0002-6177-497X)
- Juan Ammerman Yebra (ORCID: https://orcid.org/0000-0002-2059-6206)
- Violet M. Harvey (ORCID: https://orcid.org/0000-0002-6764-4789)
- Achille Nucita (ORCID: https://orcid.org/0000-0002-7926-3481)
- Hermann-Josef Mathes (ORCID: https://orcid.org/0000-0002-0680-040X)
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- Lawrence Wiencke (ORCID: https://orcid.org/0000-0003-2878-9704)
- Rukije Uzeiroska
- Nicolás Martín González (ORCID: https://orcid.org/0000-0001-6566-2222)
- Nicolas San Martin
- Corinne Bérat (ORCID: https://orcid.org/0000-0001-8294-6294)
- Zuzana Svozilikova (ORCID: https://orcid.org/0000-0001-5210-0781)
- М. Бертаина (ORCID: https://orcid.org/0000-0003-1069-1397)
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- P. Assis (ORCID: https://orcid.org/0000-0001-7765-3606)
- F. Montanet (ORCID: https://orcid.org/0000-0001-9787-596X)
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- T. Hebbeker (ORCID: https://orcid.org/0000-0002-9736-266X)
- M. Mallamaci (ORCID: https://orcid.org/0000-0003-4068-0496)
- Alena Bakalová (ORCID: https://orcid.org/0000-0003-1001-4484)
- Peter L. Biermann (ORCID: https://orcid.org/0000-0003-3948-6143)
- Jan Ebr (ORCID: https://orcid.org/0000-0001-8807-6162)
- Anthony Bwembya (ORCID: https://orcid.org/0000-0002-6995-5978)
- J. A. Chinellato (ORCID: https://orcid.org/0000-0002-1236-0789)
- S. Andringa (ORCID: https://orcid.org/0000-0002-6397-9207)
- Luis A. Anchordoqui (ORCID: https://orcid.org/0000-0003-1463-7136)
- Jorge Caraça-Valente
- David Schmidt (ORCID: https://orcid.org/0000-0003-2005-4244)
- Krzysztof Pytel (ORCID: https://orcid.org/0000-0002-2937-7886)
- R. Conceição (ORCID: https://orcid.org/0000-0003-4945-5340)
- C. Bonifazi (ORCID: https://orcid.org/0000-0002-3087-3609)
- Shefali Negi (ORCID: https://orcid.org/0000-0003-0891-0829)
- Jon Paul Lundquist (ORCID: https://orcid.org/0000-0002-4245-5092)
- Edyvânia Emily Pereira Martins (ORCID: https://orcid.org/0000-0002-1167-8314)
- Fridtjof Feldbusch
- S. Vorobiov (ORCID: https://orcid.org/0000-0001-8679-3424)
- Alexander Novikov (ORCID: https://orcid.org/0000-0002-1086-7252)
- Emanuele Avocone (ORCID: https://orcid.org/0000-0003-3757-2718)
- H.O. Klages (ORCID: https://orcid.org/0000-0002-4306-021X)
- H. Wilczyński (ORCID: https://orcid.org/0000-0003-2652-9685)
- Antonio Ambrosone (ORCID: https://orcid.org/0000-0002-9942-1029)
- Pranav Sampathkumar
- Patricia María Hansen
- A. Gorgi (ORCID: https://orcid.org/0000-0002-8085-2304)
- F. de Palma (ORCID: https://orcid.org/0000-0001-5898-2834)
- V. de Souza (ORCID: https://orcid.org/0000-0003-0865-233X)
- Esteban Roulet (ORCID: https://orcid.org/0000-0003-1478-9260)
- S. Dasso (ORCID: https://orcid.org/0000-0002-7680-4721)
- Italo Epicoco (ORCID: https://orcid.org/0000-0002-6408-1335)
- Leo Östman
- Fabio Convenga (ORCID: https://orcid.org/0000-0002-2841-1034)
- J. Matthews (ORCID: https://orcid.org/0000-0002-1832-4420)
- Fernando Catalani (ORCID: https://orcid.org/0000-0001-9332-1476)
- Adrian Sedoski (ORCID: https://orcid.org/0000-0002-4253-3361)
- Radomir Šmída (ORCID: https://orcid.org/0000-0003-0122-1123)
- Joaquín de Jesús (ORCID: https://orcid.org/0000-0002-4741-1769)
- Milton Freitas
- M. Pimenta (ORCID: https://orcid.org/0000-0002-2590-0908)
- Carmelo Evoli (ORCID: https://orcid.org/0000-0002-6023-5253)
- Matías Rolf Hampel (ORCID: https://orcid.org/0000-0001-7622-4826)
- Jose A. Bellido (ORCID: https://orcid.org/0000-0002-0833-9194)
- Kathrin Bismark (ORCID: https://orcid.org/0000-0001-8637-7041)
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- Stef Verpoest (ORCID: https://orcid.org/0000-0002-3031-3206)
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- Carmen Merx
- Mohsen Pourmohammad Shahvar
- Lukas Gülzow (ORCID: https://orcid.org/0009-0001-0620-3525)
- Shayoni Panja
- Simon Strähnz
- Sergio Cabana-Freire
- Nikolas Denner
- Beatriz de Errico (ORCID: https://orcid.org/0009-0002-4212-0708)
- João Vítor Reginatto Akim (ORCID: https://orcid.org/0000-0001-8179-9747)
- Fedor Tairli
- Alex Reuzki
- Tim Fehler
- Eric William Mayotte (ORCID: https://orcid.org/0000-0003-2618-9166)
- J.R. Hörandel (ORCID: https://orcid.org/0000-0001-6604-547X)
- J. Chudoba (ORCID: https://orcid.org/0000-0002-6425-2579)
- Khoa Dang Nguyen (ORCID: https://orcid.org/0000-0002-6525-5245)
- A. De Roeck (ORCID: https://orcid.org/0000-0002-3234-6634)
- Danelise de Oliveira Franco (ORCID: https://orcid.org/0000-0002-8435-7730)
- Jacco Vink (ORCID: https://orcid.org/0000-0002-0816-9949)
- Gioacchino Alex Anastasi (ORCID: https://orcid.org/0000-0003-0824-5283)
- Indira D. Vergara Quispe (ORCID: https://orcid.org/0000-0001-8377-5933)
- José Ochoa (ORCID: https://orcid.org/0009-0001-1395-4159)
- Teresa Bister (ORCID: https://orcid.org/0000-0003-4005-0857)
- Marko Zavrtanik (ORCID: https://orcid.org/0000-0001-5606-6912)
- Luiz Augusto Pereira (ORCID: https://orcid.org/0000-0002-3263-3203)
- Jose Sanabria Gomez (ORCID: https://orcid.org/0000-0002-4217-3212)
- B. Garćıa (ORCID: https://orcid.org/0000-0003-0919-2734)
- Marcus Niechciol (ORCID: https://orcid.org/0000-0001-6823-8056)
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- Juan Pallotta (ORCID: https://orcid.org/0000-0003-4846-8748)
- J. Brack (ORCID: https://orcid.org/0000-0003-4096-2063)
- Igor Vaiman (ORCID: https://orcid.org/0000-0002-8255-3631)
- Andrej Filipčič
- Humberto Ibarguen Salazar
- Rita Cassia dos Anjos
- Germano Guedes
- Analisa Mariazzi
- Andreas Weindl
- Juan Manuel Gonzalez (ORCID: https://orcid.org/0009-0006-7524-8635)
- Ezequiel Rodriguez
- Luca Deval
- Peter Mazur
- Stanislav Michal
- Johannes Blümer
- Jelena Köhler
- Dave Nitz
- Manuel Platino
- Julian Rautenberg
- Danilo Zavrtanik
- Edivaldo Moura Santos
- Isabelle Lhenry-Yvon
- Federico Andrés Sánchez
- Carlos Hojvat
- Qader Dorosti (ORCID: https://orcid.org/0000-0001-9711-0609)
- Alberto Etchegoyen
- Bernardo Tomé
- Felix Riehn
- Charles Timmermans
- Paul Filip
- Tanguy Pierog
- Marco Aglietta
- Carlos J. Todero Peixoto (ORCID: https://orcid.org/0000-0003-3669-8212)
- Eva Santos
- Toshihiro Fujii
- Luan Bonneau Arbeletche (ORCID: https://orcid.org/0000-0002-3087-3609)
- Thomas Fitoussi
- Michael Prouza
- Josina Schulte
- Mariano Gómez Berisso
- Roger W Clay
- Margita Kubátová
- Melanie Weitz (ORCID: https://orcid.org/0009-0001-9010-9610)
- A. A. Watson
- Primo F. Gómez Vitale
- Rogerio M. de Almeida
- Jonathan Biteau
- Martina Boháčová
- Niklas Langner
- R. Sarmento (ORCID: https://orcid.org/0000-0002-5018-5467)
- Pavel Horváth (ORCID: https://orcid.org/0000-0002-6710-5339)
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- H. Schieler (ORCID: https://orcid.org/0000-0002-2637-4778)
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- Jorge Rubén Rodriguez Rojo
- Daniele Martello
- Michael Unger
- Florian Lukas Briechle
- Samo Stanič (ORCID: https://orcid.org/0000-0003-3344-8381)
- Marcelo Augusto Leigui de Oliveira
- Ioana Codrina Maris
- Giorgio Matthiae
- Marcos Cerda
- Valerio Verzi
- Dusan Mandat
- Michael Schimp
- Brian Wundheiler
- Ralph Engel
- Tiina Suomijärvi
- Piera Luisa Ghia
- P. Gabriel Brichetto Orchera
- Markus Risse
- Ruben Squartini
- Max Büsken
- Agustín Cobos Cerutti
- Ladislav Chytka
- Corbin Covault
- Diego Correia dos Santos
- Brian Fick
- Silvia Mollerach
- Alan Fuster
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- Petr Janeček
- Virginia Binet
- Marina Scornavacche
- Alexander Menshikov
- C. Dobrigkeit
- Armando di Matteo
- Ricardo Sato
- Paul Sommers
- Cainã Oliveira
- Gualberto Avila
- A. Săftoiu (ORCID: https://orcid.org/0000-0002-7903-6510)
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- A. Almela (ORCID: https://orcid.org/0000-0003-1233-2670)
- Rodrigo Pelayo
- Fabian Gobbi
- Baobiao Yue
- Paolo Privitera
- Lorenzo Apollonio (ORCID: https://orcid.org/0009-0008-5625-5893)
- Srijan Sehgal
- Miroslav Hrabovský
- Joao dos Anjos
- Roberto Aloisio
- Diego Melo
- Vlastimil Jílek (ORCID: https://orcid.org/0000-0001-5774-7285)
- Veronika Vašíčková
- Ugo GIACCARI
- Norbert Kunka
- Juan Carlos Arteaga Velázquez
- Viviana Scherini
- Adriana Vásquez-Ramírez
- Sara Martinelli
- Heino Falcke
- Cristina Galea
- Geraldina Golup
- Jaime de Oliveira
- Petr Schovanek
- Libor Nožka
- Jannis Pawlowsky
- Juan Manuel Figueira
- Federico Campuzano
- Luis Miguel Domingues Mendes
- Frederik Krieger
- Tobias Schulz
- Sven Querchfeld
- Karl-Heinz Kampert
- Matthias Kleifges
- Luciana Andrade Dourado
- Tomáš Fodran (ORCID: https://orcid.org/0009-0000-9529-0853)
- Matias Jorge Tueros (ORCID: https://orcid.org/0000-0003-1570-1419)
- D. Ravignani (ORCID: https://orcid.org/0000-0001-7410-8522)
- G. Cataldi (ORCID: https://orcid.org/0000-0001-8066-7718)
- Megha Mogarkar
- Jhansi Bhavani Vuta
- Eric-Teunis de Boone
- Mohamed Ismaiel
- Karolina Syrokvas
- Matteo Tambone
- Pim van Dillen
Publication Details
- Published
- 2025-09-24
- DOI
- https://doi.org/10.22323/1.501.0385
- Primary Topic
- Astrophysics and Cosmic Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Strong
- Consejo Nacional de Investigaciones Científicas y Técnicas
- Agencia Nacional de Promoción Científica y Tecnológica