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Measurement of the depth of maximum of extensive air showers above 10{18} eV.

Physical review letters

Abraham J, Abreu P, Aglietta M, Ahn EJ, Allard D, Allekotte I, Allen J, Alvarez-Muñiz J, Ambrosio M, Anchordoqui L, Andringa S, Anticić T, Anzalone A, Aramo C, Arganda E, Arisaka K, Arqueros F, Asorey H, Assis P, Aublin J, Ave M, Avila G, Bäcker T, Badagnani D, Balzer M, Barber KB, Barbosa AF, Barroso SL, Baughman B, Bauleo P, Beatty JJ, Becker BR, Becker KH, Bellétoile A, Bellido JA, Benzvi S, Berat C, Bergmann T, Bertou X, Biermann PL, Billoir P, Blanch-Bigas O, Blanco F, Blanco M, Bleve C, Blümer H, Bohácová M, Boncioli D, Bonifazi C, Bonino R, Borodai N, Brack J, Brogueira P, Brown WC, Bruijn R, Buchholz P, Bueno A, Burton RE, Busca NG, Caballero-Mora KS, Caramete L, Caruso R, Castellina A, Catalano O, Cataldi G, Cazon L, Cester R, Chauvin J, Chiavassa A, Chinellato JA, Chou A, Chudoba J, Clay RW, Colombo E, Coluccia MR, Conceição R, Contreras F, Cook H, Cooper MJ, Coppens J, Cordier A, Cotti U, Coutu S, Covault CE, Creusot A, Criss A, Cronin J, Curutiu A, Dagoret-Campagne S, Dallier R, Daumiller K, Dawson BR, de Almeida RM, De Domenico M, De Donato C, de Jong SJ, De La Vega G, de Mello Junior WJ, de Mello Neto JR, De Mitri I, de Souza V, de Vries KD, Decerprit G, Del Peral L, Deligny O, Della Selva A, Delle Fratte C, Dembinski H, Di Giulio C, Diaz JC, Díaz Castro ML, Diep PN, Dobrigkeit C, D'Olivo JC, Dong PN, Dorofeev A, Dos Anjos JC, Dova MT, D'Urso D, Dutan I, Duvernois MA, Ebr J, Engel R, Erdmann M, Escobar CO, Etchegoyen A, Facal San Luis P, Falcke H, Farrar G, Fauth AC, Fazzini N, Ferrero A, Fick B, Filevich A, Filipcic A, Fleck I, Fliescher S, Fracchiolla CE, Fraenkel ED, Fröhlich U, Fulgione W, Gamarra RF, Gambetta S, García B, García Gámez D, Garcia-Pinto D, Garrido X, Gelmini G, Gemmeke H, Ghia PL, Giaccari U, Giller M, Glass H, Goggin LM, Gold MS, Golup G, Gomez Albarracin F, Gómez Berisso M, Gonçalves P, Gonzalez D, Gonzalez JG, Góra D, Gorgi A, Gouffon P, Gozzini SR, Grashorn E, Grebe S, Grigat M, Grillo AF, Guardincerri Y, Guarino F, Guedes GP, Hague JD, Halenka V, Hansen P, Harari D, Harmsma S, Harton JL, Haungs A, Hebbeker T, Heck D, Herve AE, Hojvat C, Holmes VC, Homola P, Hörandel JR, Horneffer A, Hrabovský M, Huege T, Hussain M, Iarlori M, Insolia A, Ionita F, Italiano A, Jiraskova S, Kadija K, Kaducak M, Kampert KH, Karova T, Kasper P, Kégl B, Keilhauer B, Keivani A, Kelley J, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Knapik R, Knapp J, Koang DH, Krieger A, Krömer O, Kruppke-Hansen D, Kuehn F, Kuempel D, Kulbartz K, Kunka N, Kusenko A, La Rosa G, Lachaud C, Lago BL, Lautridou P, Leão MS, Lebrun D, Lebrun P, Lee J, Leigui de Oliveira MA, Lemiere A, Letessier-Selvon A, Lhenry-Yvon I, López R, Lopez Agüera A, Louedec K, Lozano Bahilo J, Lucero A, Ludwig M, Lyberis H, Maccarone MC, Macolino C, Maldera S, Mandat D, Mantsch P, Mariazzi AG, Marin V, Maris IC, Marquez Falcon HR, Marsella G, Martello D, Martínez Bravo O, Mathes HJ, Matthews J, Matthews JA, Matthiae G, Maurizio D, Mazur PO, McEwen M, Medina-Tanco G, Melissas M, Melo D, Menichetti E, Menshikov A, Meurer C, Micanović S, Micheletti MI, Miller W, Miramonti L, Mollerach S, Monasor M, Monnier Ragaigne D, Montanet F, Morales B, Morello C, Moreno E, Moreno JC, Morris C, Mostafá M, Mueller S, Muller MA, Mussa R, Navarra G, Navarro JL, Navas S, Necesal P, Nellen L, Nhung PT, Nierstenhoefer N, Nitz D, Nosek D, Nozka L, Nyklicek M, Oehlschläger J, Olinto A, Oliva P, Olmos-Gilbaja VM, Ortiz M, Pacheco N, Pakk Selmi-Dei D, Palatka M, Pallotta J, Palmieri N, Parente G, Parizot E, Parlati S, Parra A, Parrisius J, Parsons RD, Pastor S, Paul T, Pavlidou V, Payet K, Pech M, Pekala J, Pelayo R, Pepe IM, Perrone L, Pesce R, Petermann E, Petrera S, Petrinca P, Petrolini A, Petrov Y, Petrovic J, Pfendner C, Piegaia R, Pierog T, Pimenta M, Pirronello V, Platino M, Ponce VH, Pontz M, Privitera P, Prouza M, Quel EJ, Rautenberg J, Ravel O, Ravignani D, Redondo A, Revenu B, Rezende FA, Ridky J, Riggi S, Risse M, Ristori P, Rivière C, Rizi V, Robledo C, Rodriguez G, Rodriguez Martino J, Rodriguez Rojo J, Rodriguez-Cabo I, Rodríguez-Frías MD, Ros G, Rosado J, Rossler T, Roth M, Rouillé-d'Orfeuil B, Roulet E, Rovero AC, Salamida F, Salazar H, Salina G, Sánchez F, Santander M, Santo CE, Santos E, Santos EM, Sarazin F, Sarkar S, Sato R, Scharf N, Scherini V, Schieler H, Schiffer P, Schmidt A, Schmidt F, Schmidt T, Scholten O, Schoorlemmer H, Schovancova J, Schovánek P, Schroeder F, Schulte S, Schüssler F, Schuster D, Sciutto SJ, Scuderi M, Segreto A, Semikoz D, Settimo M, Shadkam A, Shellard RC, Sidelnik I, Siffert BB, Sigl G, Smiałkowski A, Smída R, Snow GR, Sommers P, Sorokin J, Spinka H, Squartini R, Stasielak J, Stephan M, Strazzeri E, Stutz A, Suarez F, Suomijärvi T, Supanitsky AD, Susa T, Sutherland MS, Swain J, Szadkowski Z, Tamashiro A, Tamburro A, Tapia A, Tarutina T, Taşcău O, Tcaciuc R, Tcherniakhovski D, Tegolo D, Thao NT, Thomas D, Tiffenberg J, Timmermans C, Tkaczyk W, Todero Peixoto CJ, Tomé B, Tonachini A, Travnicek P, Tridapalli DB, Tristram G, Trovato E, Tueros M, Ulrich R, Unger M, Urban M, Valdés Galicia JF, Valiño I, Valore L, van den Berg AM, Vázquez JR, Vázquez RA, Veberic D, Venters T, Verzi V, Videla M, Villaseñor L, Vorobiov S, Voyvodic L, Wahlberg H, Wahrlich P, Wainberg O, Warner D, Watson AA, Westerhoff S, Whelan BJ, Wieczorek G, Wiencke L, Wilczyńska B, Wilczyński H, Williams C, Winchen T, Winnick MG, Wundheiler B, Yamamoto T, Younk P, Yuan G, Yushkov A, Zas E, Zavrtanik D, Zavrtanik M, Zaw I, Zepeda A, Ziolkowski M.
PMID: 20366976
Phys Rev Lett. 2010 Mar 05;104(9):091101. doi: 10.1103/PhysRevLett.104.091101. Epub 2010 Mar 01.

We describe the measurement of the depth of maximum, X{max}, of the longitudinal development of air showers induced by cosmic rays. Almost 4000 events above 10;{18} eV observed by the fluorescence detector of the Pierre Auger Observatory in coincidence...

A large light-mass component of cosmic rays at 10(17)-10(17.5) electronvolts from radio observations.

Nature

Buitink S, Corstanje A, Falcke H, Hörandel JR, Huege T, Nelles A, Rachen JP, Rossetto L, Schellart P, Scholten O, ter Veen S, Thoudam S, Trinh TN, Anderson J, Asgekar A, Avruch IM, Bell ME, Bentum MJ, Bernardi G, Best P, Bonafede A, Breitling F, Broderick JW, Brouw WN, Brüggen M, Butcher HR, Carbone D, Ciardi B, Conway JE, de Gasperin F, de Geus E, Deller A, Dettmar RJ, van Diepen G, Duscha S, Eislöffel J, Engels D, Enriquez JE, Fallows RA, Fender R, Ferrari C, Frieswijk W, Garrett MA, Grießmeier JM, Gunst AW, van Haarlem MP, Hassall TE, Heald G, Hessels JW, Hoeft M, Horneffer A, Iacobelli M, Intema H, Juette E, Karastergiou A, Kondratiev VI, Kramer M, Kuniyoshi M, Kuper G, van Leeuwen J, Loose GM, Maat P, Mann G, Markoff S, McFadden R, McKay-Bukowski D, McKean JP, Mevius M, Mulcahy DD, Munk H, Norden MJ, Orru E, Paas H, Pandey-Pommier M, Pandey VN, Pietka M, Pizzo R, Polatidis AG, Reich W, Röttgering HJ, Scaife AM, Schwarz DJ, Serylak M, Sluman J, Smirnov O, Stappers BW, Steinmetz M, Stewart A, Swinbank J, Tagger M, Tang Y, Tasse C, Toribio MC, Vermeulen R, Vocks C, Vogt C, van Weeren RJ, Wijers RA, Wijnholds SJ, Wise MW, Wucknitz O, Yatawatta S, Zarka P, Zensus JA.
PMID: 26935696
Nature. 2016 Mar 03;531(7592):70-3. doi: 10.1038/nature16976.

Cosmic rays are the highest-energy particles found in nature. Measurements of the mass composition of cosmic rays with energies of 10(17)-10(18) electronvolts are essential to understanding whether they have galactic or extragalactic sources. It has also been proposed that...

Upper limit on the diffuse flux of ultrahigh energy tau neutrinos from the Pierre Auger Observatory.

Physical review letters

Abraham J, Abreu P, Aglietta M, Aguirre C, Allard D, Allekotte I, Allen J, Allison P, Alvarez-Muñiz J, Ambrosio M, Anchordoqui L, Andringa S, Anzalone A, Aramo C, Argirò S, Arisaka K, Armengaud E, Arneodo F, Arqueros F, Asch T, Asorey H, Assis P, Atulugama BS, Aublin J, Ave M, Avila G, Bäcker T, Badagnani D, Barbosa AF, Barnhill D, Barroso SL, Bauleo P, Beatty JJ, Beau T, Becker BR, Becker KH, Bellido JA, BenZvi S, Berat C, Bergmann T, Bernardini P, Bertou X, Biermann PL, Billoir P, Blanch-Bigas O, Blanco F, Blasi P, Bleve C, Blümer H, Bohácová M, Bonifazi C, Bonino R, Boratav M, Brack J, Brogueira P, Brown WC, Buchholz P, Bueno A, Burton RE, Busca NG, Caballero-Mora KS, Cai B, Camin DV, Caramete L, Caruso R, Carvalho W, Castellina A, Catalano O, Cataldi G, Cazon L, Cester R, Chauvin J, Chiavassa A, Chinellato JA, Chou A, Chye J, Clark PD, Clay RW, Colombo E, Conceição R, Connolly B, Contreras F, Coppens J, Cordier A, Cotti U, Coutu S, Covault CE, Creusot A, Criss A, Cronin J, Curutiu A, Dagoret-Campagne S, Daumiller K, Dawson BR, de Almeida RM, De Donato C, de Jong SJ, De La Vega G, de Mello Junior WJ, de Mello Neto JR, DeMitri I, de Souza V, del Peral L, Deligny O, Della Selva A, Delle Fratte C, Dembinski H, Di Giulio C, Diaz JC, Dobrigkeit C, D'Olivo JC, Dornic D, Dorofeev A, dos Anjos JC, Dova MT, D'Urso D, Dutan I, DuVernois MA, Engel R, Epele L, Erdmann M, Escobar CO, Etchegoyen A, Facal San Luis P, Falcke H, Farrar G, Fauth AC, Fazzini N, Ferrer F, Ferry S, Fick B, Filevich A, Filipcic A, Fleck I, Fonte R, Fracchiolla CE, Fulgione W, García B, García Gámez D, Garcia-Pinto D, Garrido X, Geenen H, Gelmini G, Gemmeke H, Ghia PL, Giller M, Glass H, Gold MS, Golup G, Gomez Albarracin F, Gómez Berisso M, Gómez Herrero R, Gonçalves P, Gonçalves do Amaral M, Gonzalez D, Gonzalez JG, González M, Góra D, Gorgi A, Gouffon P, Grassi V, Grillo AF, Grunfeld C, Guardincerri Y, Guarino F, Guedes GP, Gutiérrez J, Hague JD, Hamilton JC, Hansen P, Harari D, Harmsma S, Harton JL, Haungs A, Hauschildt T, Healy MD, Hebbeker T, Hebrero G, Heck D, Hojvat C, Holmes VC, Homola P, Hörandel J, Horneffer A, Horvat M, Hrabovský M, Huege T, Hussain M, Iarlori M, Insolia A, Ionita F, Italiano A, Kaducak M, Kampert KH, Karova T, Kégl B, Keilhauer B, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Knapik R, Knapp J, Koang DH, Krieger A, Krömer O, Kuempel D, Kunka N, Kusenko A, La Rosa G, Lachaud C, Lago BL, Lebrun D, Lebrun P, Lee J, Leigui de Oliveira MA, Letessier-Selvon A, Leuthold M, Lhenry-Yvon I, López R, Lopez Agüera A, Lozano Bahilo J, Luna García R, Maccarone MC, Macolino C, Maldera S, Mancarella G, Manceñido ME, Mandat D, Mantsch P, Mariazzi AG, Maris IC, Marquez Falcon HR, Martello D, Martínez J, Martínez Bravo O, Mathes HJ, Matthews J, Matthews JA, Matthiae G, Maurizio D, Mazur PO, McCauley T, McEwen M, McNeil RR, Medina MC, Medina-Tanco G, Meli A, Melo D, Menichetti E, Menschikov A, Meurer C, Meyhandan R, Micheletti MI, Miele G, Miller W, Mollerach S, Monasor M, Monnier Ragaigne D, Montanet F, Morales B, Morello C, Moreno JC, Morris C, Mostafá M, Muller MA, Mussa R, Navarra G, Navarro JL, Navas S, Necesal P, Nellen L, Newman-Holmes C, Newton D, Nguyen Thi T, Nierstenhoefer N, Nitz D, Nosek D, Nozka L, Oehlschläger J, Ohnuki T, Olinto A, Olmos-Gilbaja VM, Ortiz M, Ortolani F, Ostapchenko S, Otero L, Pacheco N, Pakk Selmi-Dei D, Palatka M, Pallotta J, Parente G, Parizot E, Parlati S, Pastor S, Patel M, Paul T, Pavlidou V, Payet K, Pech M, Pekala J, Pelayo R, Pepe IM, Perrone L, Petrera S, Petrinca P, Petrov Y, Pham Ngoc D, Pham Ngoc D, Pham Thi TN, Pichel A, Piegaia R, Pierog T, Pimenta M, Pinto T, Pirronello V, Pisanti O, Platino M, Pochon J, Privitera P, Prouza M, Quel EJ, Rautenberg J, Redondo A, Reucroft S, Revenu B, Rezende FA, Ridky J, Riggi S, Risse M, Rivière C, Rizi V, Roberts M, Robledo C, Rodriguez G, Rodríguez Frías D, Rodriguez Martino J, Rodriguez Rojo J, Rodriguez-Cabo I, Ros G, Rosado J, Roth M, Rouillé-d'Orfeuil B, Roulet E, Rovero AC, Salamida F, Salazar H, Salina G, Sánchez F, Santander M, Santo CE, Santos EM, Sarazin F, Sarkar S, Sato R, Scherini V, Schieler H, Schmidt A, Schmidt F, Schmidt T, Scholten O, Schovánek P, Schüssler F, Sciutto SJ, Scuderi M, Segreto A, Semikoz D, Settimo M, Shellard RC, Sidelnik I, Siffert BB, Sigl G, Smetniansky De Grande N, Smiałkowski A, Smída R, Smith AG, Smith BE, Snow GR, Sokolsky P, Sommers P, Sorokin J, Spinka H, Squartini R, Strazzeri E, Stutz A, Suarez F, Suomijärvi T, Supanitsky AD, Sutherland MS, Swain J, Szadkowski Z, Takahashi J, Tamashiro A, Tamburro A, Taşcău O, Tcaciuc R, Thomas D, Ticona R, Tiffenberg J, Timmermans C, Tkaczyk W, Todero Peixoto CJ, Tomé B, Tonachini A, Torres I, Torresi D, Travnicek P, Tripathi A, Tristram G, Tscherniakhovski D, Tueros M, Tunnicliffe V, Ulrich R, Unger M, Urban M, Valdés Galicia JF, Valiño I, Valore L, van den Berg AM, van Elewyck V, Vázquez RA, Veberic D, Veiga A, Velarde A, Venters T, Verzi V, Videla M, Villaseñor L, Vorobiov S, Voyvodic L, Wahlberg H, Wainberg O, Walker P, Warner D, Watson AA, Westerhoff S, Wieczorek G, Wiencke L, Wilczyńska B, Wilczyński H, Wileman C, Winnick MG, Wu H, Wundheiler B, Yamamoto T, Younk P, Zas E, Zavrtanik D, Zavrtanik M, Zech A, Zepeda A, Ziolkowski M.
PMID: 18518595
Phys Rev Lett. 2008 May 30;100(21):211101. doi: 10.1103/PhysRevLett.100.211101. Epub 2008 May 27.

The surface detector array of the Pierre Auger Observatory is sensitive to Earth-skimming tau neutrinos that interact in Earth's crust. Tau leptons from nu(tau) charged-current interactions can emerge and decay in the atmosphere to produce a nearly horizontal shower...

Features of the Energy Spectrum of Cosmic Rays above 2.5×10^{18}  eV Using the Pierre Auger Observatory.

Physical review letters

Aab A, Abreu P, Aglietta M, Albury JM, Allekotte I, Almela A, Alvarez Castillo J, Alvarez-Muñiz J, Alves Batista R, Anastasi GA, Anchordoqui L, Andrada B, Andringa S, Aramo C, Araújo Ferreira PR, Asorey H, Assis P, Avila G, Badescu AM, Bakalova A, Balaceanu A, Barbato F, Barreira Luz RJ, Becker KH, Bellido JA, Berat C, Bertaina ME, Bertou X, Biermann PL, Bister T, Biteau J, Blanco A, Blazek J, Bleve C, Boháčová M, Boncioli D, Bonifazi C, Bonneau Arbeletche L, Borodai N, Botti AM, Brack J, Bretz T, Briechle FL, Buchholz P, Bueno A, Buitink S, Buscemi M, Caballero-Mora KS, Caccianiga L, Calcagni L, Cancio A, Canfora F, Caracas I, Carceller JM, Caruso R, Castellina A, Catalani F, Cataldi G, Cazon L, Cerda M, Chinellato JA, Choi K, Chudoba J, Chytka L, Clay RW, Cobos Cerutti AC, Colalillo R, Coleman A, Coluccia MR, Conceição R, Condorelli A, Consolati G, Contreras F, Convenga F, Covault CE, Dasso S, Daumiller K, Dawson BR, Day JA, de Almeida RM, de Jesús J, de Jong SJ, De Mauro G, de Mello Neto JRT, 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 ML, Dobrigkeit C, D'Olivo JC, Dorosti Q, Dos Anjos RC, Dova MT, Ebr J, Engel R, Epicoco I, Erdmann M, Escobar CO, Etchegoyen A, Falcke H, Farmer J, Farrar G, Fauth AC, Fazzini N, Feldbusch F, Fenu F, Fick B, Figueira JM, Filipčič A, Fodran T, Freire MM, Fujii T, Fuster A, Galea C, Galelli C, García B, Garcia Vegas AL, Gemmeke H, Gesualdi F, Gherghel-Lascu A, Ghia PL, Giaccari U, Giammarchi M, Giller M, Glombitza J, Gobbi F, Gollan F, Golup G, Gómez Berisso M, Gómez Vitale PF, Gongora JP, González N, Goos I, Góra D, Gorgi A, Gottowik M, Grubb TD, Guarino F, Guedes GP, Guido E, Hahn S, Halliday R, Hampel MR, Hansen P, Harari D, Harvey VM, Haungs A, Hebbeker T, Heck D, Hill GC, Hojvat C, Hörandel JR, Horvath P, Hrabovský M, Huege T, Hulsman J, Insolia A, Isar PG, Johnsen JA, Jurysek J, Kääpä A, Kampert KH, Keilhauer B, Kemp J, Klages HO, Kleifges M, Kleinfeller J, Köpke M, Kukec Mezek G, Lago BL, LaHurd D, Lang RG, Leigui de Oliveira MA, 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 BC, Manshanden J, Mantsch P, Marafico S, Mariazzi AG, Mariş IC, Marsella G, Martello D, Martinez H, Martínez Bravo O, Mastrodicasa M, Mathes HJ, Matthews J, Matthiae G, Mayotte E, Mazur PO, Medina-Tanco G, Melo D, Menshikov A, Merenda KD, Michal S, Micheletti MI, Miramonti L, Mockler D, Mollerach S, Montanet F, Morello C, Mostafá M, Müller AL, Muller MA, Mulrey K, Mussa R, Muzio M, Namasaka WM, Nellen L, Nguyen PH, Niculescu-Oglinzanu M, Niechciol M, Nitz D, Nosek D, Novotny V, Nožka L, Nucita A, Núñez LA, Palatka M, Pallotta J, Panetta MP, 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 MJ, Roth M, Roulet E, Rovero AC, Ruehl P, Saffi SJ, Saftoiu A, Salamida F, Salazar H, Salina G, Sanabria Gomez JD, Sánchez F, Santos EM, 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 FG, Schröder S, Schulz A, Sciutto SJ, Scornavacche M, Shellard RC, Sigl G, Silli G, Sima O, Šmída R, Sommers P, Soriano JF, Souchard J, Squartini R, Stadelmaier M, Stanca D, Stanič S, Stasielak J, Stassi P, Streich A, Suárez-Durán M, Sudholz T, Suomijärvi T, Supanitsky AD, Šupík J, Szadkowski Z, Taboada A, Tapia A, Timmermans C, Tkachenko O, Tobiska P, Todero Peixoto CJ, 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 JF, Valiño I, Valore L, van Vliet A, Varela E, Vargas Cárdenas B, Vásquez-Ramírez A, Veberič D, Ventura C, Vergara Quispe ID, Verzi V, Vicha J, Villaseñor L, Vink J, Vorobiov S, Wahlberg H, Watson AA, 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.
PMID: 33016715
Phys Rev Lett. 2020 Sep 18;125(12):121106. doi: 10.1103/PhysRevLett.125.121106.

We report a measurement of the energy spectrum of cosmic rays above 2.5×10^{18}  eV based on 215 030 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...

A distinct negative leader propagation mode.

Scientific reports

Scholten O, Hare BM, Dwyer J, Liu N, Sterpka C, Kolmašová I, Santolík O, Lán R, Uhlíř L, Buitink S, Corstanje A, Falcke H, Huege T, Hörandel JR, Krampah GK, Mitra P, Mulrey K, Nelles A, Pandya H, Rachen JP, Trinh TNG, Ter Veen S, Thoudam S, Winchen T.
PMID: 34376724
Sci Rep. 2021 Aug 10;11(1):16256. doi: 10.1038/s41598-021-95433-5.

The common phenomenon of lightning still harbors many secrets such as what are the conditions for lightning initiation and what is driving the discharge to propagate over several tens of kilometers through the atmosphere forming conducting ionized channels called...

LOFAR Lightning Imaging: Mapping Lightning With Nanosecond Precision.

Journal of geophysical research. Atmospheres : JGR

Hare BM, Scholten O, Bonardi A, Buitink S, Corstanje A, Ebert U, Falcke H, Hörandel JR, Leijnse H, Mitra P, Mulrey K, Nelles A, Rachen JP, Rossetto L, Rutjes C, Schellart P, Thoudam S, Trinh TNG, Ter Veen S, Winchen T.
PMID: 29938144
J Geophys Res Atmos. 2018 Mar 16;123(5):2861-2876. doi: 10.1002/2017JD028132. Epub 2018 Mar 12.

Lightning mapping technology has proven instrumental in understanding lightning. In this work we present a pipeline that can use lightning observed by the LOw-Frequency ARray (LOFAR) radio telescope to construct a 3-D map of the flash. We show that...

Detection and imaging of atmospheric radio flashes from cosmic ray air showers.

Nature

Falcke H, Apel WD, Badea AF, Bähren L, Bekk K, Bercuci A, Bertaina M, Biermann PL, Blümer J, Bozdog H, Brancus IM, Buitink S, Brüggemann M, Buchholz P, Butcher H, Chiavassa A, Daumiller K, de Bruyn AG, de Vos CM, Di Pierro F, Doll P, Engel R, Gemmeke H, Ghia PL, Glasstetter R, Grupen C, Haungs A, Heck D, Hörandel JR, Horneffer A, Huege T, Kampert KH, Kant GW, Klein U, Kolotaev Y, Koopman Y, Krömer O, Kuijpers J, Lafebre S, Maier G, Mathes HJ, Mayer HJ, Milke J, Mitrica B, Morello C, Navarra G, Nehls S, Nigl A, Obenland R, Oehlschläger J, Ostapchenko S, Over S, Pepping HJ, Petcu M, Petrovic J, Plewnia S, Rebel H, Risse A, Roth M, Schieler H, Schoonderbeek G, Sima O, Stümpert M, Toma G, Trinchero GC, Ulrich H, Valchierotti S, van Buren J, van Cappellen W, Walkowiak W, Weindl A, Wijnholds S, Wochele J, Zabierowski J, Zensus JA, Zimmermann D.
PMID: 15902250
Nature. 2005 May 19;435(7040):313-6. doi: 10.1038/nature03614.

The nature of ultrahigh-energy cosmic rays (UHECRs) at energies >10(20) eV remains a mystery. They are likely to be of extragalactic origin, but should be absorbed within approximately 50 Mpc through interactions with the cosmic microwave background. As there...

Timing Calibration and Windowing Technique Comparison for Lightning Mapping Arrays.

Earth and space science (Hoboken, N.J.)

Hare BM, Edens H, Krehbiel P, Rison W, Scholten O, Buitink S, Corstanje A, Falcke H, Hörandel JR, Huege T, Krampah GK, Mitra P, Mulrey K, Nelles A, Pandya H, Rachen JP, Thoudam S, Trinh TN, Ter Veen S, Winchen T.
PMID: 34435079
Earth Space Sci. 2021 Jul;8(7):e2020EA001523. doi: 10.1029/2020EA001523. Epub 2021 Jul 08.

Since their introduction 22 years ago, lightning mapping arrays (LMA) have played a central role in the investigation of lightning physics. Even in recent years with the proliferation of digital interferometers and the introduction of the LOw Frequency ARray...

Testing Hadronic Interactions at Ultrahigh Energies with Air Showers Measured by the Pierre Auger Observatory.

Physical review letters

Aab A, Abreu P, Aglietta M, Ahn EJ, Al Samarai I, Albuquerque IF, Allekotte I, Allen JD, Allison P, Almela A, Alvarez Castillo J, Alvarez-Muñiz J, Ambrosio M, Anastasi GA, Anchordoqui L, Andrada B, Andringa S, Aramo C, Arqueros F, Arsene N, Asorey H, Assis P, Aublin J, Avila G, Badescu AM, Baus C, 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, Blümer H, 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 B, Caccianiga L, Cancio A, Canfora F, Caramete L, Caruso R, Castellina A, Cataldi G, Cazon L, Cester R, Chavez AG, Chiavassa A, Chinellato JA, Chirinos Diaz JC, Chudoba J, Clay RW, Colalillo R, Coleman A, Collica L, Coluccia MR, Conceição R, Contreras F, Cooper MJ, Coutu S, Covault CE, Cronin J, Dallier R, D'Amico S, Daniel B, Dasso S, Daumiller K, Dawson BR, de Almeida RM, de Jong SJ, De Mauro G, de Mello Neto JR, De Mitri I, de Oliveira J, de Souza V, Debatin J, Del Peral L, Deligny O, Dhital N, Di Giulio C, Di Matteo A, Díaz Castro ML, Diogo F, Dobrigkeit C, D'Olivo JC, Dorofeev A, Dos Anjos RC, Dova MT, Dundovic A, Ebr J, Engel R, Erdmann M, Erfani M, Escobar CO, Espadanal J, Etchegoyen A, Falcke H, Fang K, Farrar GR, Fauth AC, Fazzini N, Ferguson AP, Fick B, Figueira JM, Filevich A, Filipčič A, Fratu O, Freire MM, Fujii T, Fuster A, Gallo F, García B, Garcia-Pinto D, Gate F, Gemmeke H, Gherghel-Lascu A, Ghia PL, Giaccari U, Giammarchi M, Giller M, Głas D, Glaser C, Glass H, Golup G, Gómez Berisso M, Gómez Vitale PF, González N, Gookin B, Gordon J, Gorgi A, Gorham P, Gouffon P, Griffith N, Grillo AF, Grubb TD, Guarino F, Guedes GP, Hampel MR, Hansen P, Harari D, Harrison TA, Harton JL, Hasankiadeh Q, Haungs A, Hebbeker T, Heck D, Heimann P, Herve AE, Hill GC, Hojvat C, Hollon N, Holt E, Homola P, Hörandel JR, Horvath P, Hrabovský M, Huege T, Hulsman J, Insolia A, Isar PG, Jandt I, Jansen S, Jarne C, Johnsen JA, Josebachuili M, Kääpä A, Kambeitz O, Kampert KH, Kasper P, Katkov I, Keilhauer B, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Krause R, Krohm N, Kuempel D, Kukec Mezek G, Kunka N, Kuotb Awad A, LaHurd D, Latronico L, Lauscher M, Lautridou P, Lebrun P, Legumina R, Leigui de Oliveira MA, Letessier-Selvon A, Lhenry-Yvon I, Link K, Lopes L, López R, López Casado A, Lucero A, Malacari M, Mallamaci M, Mandat D, Mantsch P, Mariazzi AG, Marin V, Mariş IC, Marsella G, Martello D, Martinez H, Martínez Bravo O, Masías Meza JJ, Mathes HJ, Mathys S, Matthews J, Matthews JA, Matthiae G, Maurizio D, Mayotte E, Mazur PO, Medina C, Medina-Tanco G, Mello VB, Melo D, Menshikov A, Messina S, Micheletti MI, Middendorf L, Minaya IA, Miramonti L, Mitrica B, Molina-Bueno L, Mollerach S, Montanet F, Morello C, Mostafá M, Moura CA, Müller G, Muller MA, Müller S, Naranjo I, Navas S, Necesal P, Nellen L, Nelles A, Neuser J, Nguyen PH, Niculescu-Oglinzanu M, Niechciol M, Niemietz L, Niggemann T, Nitz D, Nosek D, Novotny V, Nožka H, Núñez LA, Ochilo L, Oikonomou F, Olinto A, Pakk Selmi-Dei D, Palatka M, Pallotta J, Papenbreer P, Parente G, Parra A, Paul T, Pech M, Pedreira F, Pękala J, Pelayo R, Peña-Rodriguez J, Pepe IM, Pereira LA, Perrone L, Petermann E, Peters C, Petrera S, Phuntsok J, Piegaia R, Pierog T, Pieroni P, Pimenta M, Pirronello V, Platino M, Plum M, Porowski C, Prado RR, Privitera P, Prouza M, Quel EJ, Querchfeld S, Quinn S, Rautenberg J, Ravel O, Ravignani D, Revenu B, Ridky J, Risse M, Ristori P, Rizi V, Rodrigues de Carvalho W, Rodriguez Rojo J, Rodríguez-Frías MD, Rogozin D, Rosado J, Roth M, Roulet E, Rovero AC, Saffi SJ, Saftoiu A, Salazar H, Saleh A, Salesa Greus F, Salina G, Sanabria Gomez JD, Sánchez F, Sanchez-Lucas P, Santos EM, Santos E, Sarazin F, Sarkar B, Sarmento R, Sarmiento-Cano C, Sato R, Scarso C, Schauer M, Scherini V, Schieler H, Schmidt D, Scholten O, Schoorlemmer H, Schovánek P, Schröder FG, Schulz A, Schulz J, Schumacher J, Sciutto SJ, Segreto A, Settimo M, Shadkam A, Shellard RC, Sigl G, Sima O, Śmiałkowski A, Šmída R, Snow GR, Sommers P, Sonntag S, Sorokin J, Squartini R, Stanca D, Stanič S, Stapleton J, Stasielak J, Strafella F, Stutz A, Suarez F, Suarez Durán M, Sudholz T, Suomijärvi T, Supanitsky AD, Sutherland MS, Swain J, Szadkowski Z, Taborda OA, Tapia A, Tepe A, Theodoro VM, Timmermans C, Todero Peixoto CJ, Tomankova L, Tomé B, Tonachini A, Torralba Elipe G, Torres Machado D, Travnicek P, Trini M, Ulrich R, Unger M, Urban M, Valbuena-Delgado A, Valdés Galicia JF, Valiño I, Valore L, van Aar G, van Bodegom P, van den Berg AM, van Vliet A, Varela E, Vargas Cárdenas B, Varner G, Vázquez JR, Vázquez RA, Veberič D, Verzi V, Vicha J, Videla M, Villaseñor L, Vorobiov S, Wahlberg H, Wainberg O, Walz D, Watson AA, Weber M, Weindl A, Wiencke L, Wilczyński H, Winchen T, Wittkowski D, Wundheiler B, Wykes S, Yang L, Yapici T, Yelos D, Zas E, Zavrtanik D, Zavrtanik M, Zepeda A, Zimmermann B, Ziolkowski M, Zong Z, Zuccarello F.
PMID: 27858429
Phys Rev Lett. 2016 Nov 04;117(19):192001. doi: 10.1103/PhysRevLett.117.192001. Epub 2016 Oct 31.

Ultrahigh energy cosmic ray air showers probe particle physics at energies beyond the reach of accelerators. Here we introduce a new method to test hadronic interaction models without relying on the absolute energy calibration, and apply it to events...

Measurement of the Fluctuations in the Number of Muons in Extensive Air Showers with the Pierre Auger Observatory.

Physical review letters

Aab A, Abreu P, Aglietta M, Albury JM, Allekotte I, Almela A, Alvarez-Muñiz J, Alves Batista R, Anastasi GA, Anchordoqui L, Andrada B, Andringa S, Aramo C, Araújo Ferreira PR, Asorey H, Assis P, Avila G, Badescu AM, Bakalova A, Balaceanu A, Barbato F, Barreira Luz RJ, Becker KH, Bellido JA, Berat C, Bertaina ME, Bertou X, Biermann PL, Bister T, Biteau J, Blazek J, Bleve C, Boháčová M, Boncioli D, Bonifazi C, Bonneau Arbeletche L, Borodai N, Botti AM, Brack J, Bretz T, Briechle FL, Buchholz P, Bueno A, Buitink S, Buscemi M, Caballero-Mora KS, Caccianiga L, Cancio A, Canfora F, Caracas I, Carceller JM, Caruso R, Castellina A, Catalani F, Cataldi G, Cazon L, Cerda M, Chinellato JA, Choi K, Chudoba J, Chytka L, Clay RW, Cobos Cerutti AC, Colalillo R, Coleman A, Coluccia MR, Conceição R, Condorelli A, Consolati G, Contreras F, Convenga F, Covault CE, Dasso S, Daumiller K, Dawson BR, Day JA, de Almeida RM, de Jesús J, de Jong SJ, De Mauro G, de Mello Neto JRT, 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 Matteo A, Dobrigkeit C, D'Olivo JC, Dos Anjos RC, Dova MT, Ebr J, Engel R, Epicoco I, Erdmann M, Escobar CO, Etchegoyen A, Falcke H, Farmer J, Farrar G, Fauth AC, Fazzini N, Feldbusch F, Fenu F, Fick B, Figueira JM, Filipčič A, Fodran T, Freire MM, Fujii T, Fuster A, Galea C, Galelli C, García B, Garcia Vegas AL, Gemmeke H, Gesualdi F, Gherghel-Lascu A, Ghia PL, Giaccari U, Giammarchi M, Giller M, Glombitza J, Gobbi F, Gollan F, Golup G, Gómez Berisso M, Gómez Vitale PF, Gongora JP, González N, Goos I, Góra D, Gorgi A, Gottowik M, Grubb TD, Guarino F, Guedes GP, Guido E, Hahn S, Halliday R, Hampel MR, Hansen P, Harari D, Harvey VM, Haungs A, Hebbeker T, Heck D, Hill GC, Hojvat C, Hörandel JR, Horvath P, Hrabovský M, Huege T, Hulsman J, Insolia A, Isar PG, Johnsen JA, Jurysek J, Kääpä A, Kampert KH, Keilhauer B, Kemp J, Klages HO, Kleifges M, Kleinfeller J, Köpke M, Kukec Mezek G, Lago BL, LaHurd D, Lang RG, Langner N, Leigui de Oliveira MA, Lenok V, Letessier-Selvon A, Lhenry-Yvon I, Lo Presti D, Lopes L, López R, Lorek R, Luce Q, Lucero A, Lundquist JP, Machado Payeras A, Mancarella G, Mandat D, Manning BC, Manshanden J, Mantsch P, Marafico S, Mariazzi AG, Mariş IC, Marsella G, Martello D, Martinez H, Martínez Bravo O, Mastrodicasa M, Mathes HJ, Matthews J, Matthiae G, Mayotte E, Mazur PO, Medina-Tanco G, Melo D, Menshikov A, Merenda KD, Michal S, Micheletti MI, Miramonti L, Mollerach S, Montanet F, Morello C, Mostafá M, Müller AL, Muller MA, Mulrey K, Mussa R, Muzio M, Namasaka WM, Nellen L, Niculescu-Oglinzanu M, Niechciol M, Nitz D, Nosek D, Novotny V, Nožka L, Nucita A, Núñez LA, Palatka M, Pallotta J, Papenbreer P, Parente G, Parra A, Pech M, Pedreira F, Pȩkala J, Pelayo R, Peña-Rodriguez J, Perez Armand J, Perlin M, Perrone L, 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 Rojo J, Roncoroni MJ, Roth M, Roulet E, Rovero AC, Ruehl P, Saffi SJ, Saftoiu A, Salamida F, Salazar H, Salina G, Sanabria Gomez JD, Sánchez F, Santos EM, Santos E, Sarazin F, Sarmento R, Sarmiento-Cano C, Sato R, Savina P, Schäfer CM, Scherini V, Schieler H, Schimassek M, Schimp M, Schlüter F, Schmidt D, Scholten O, Schovánek P, Schröder FG, Schröder S, Schulte J, Sciutto SJ, Scornavacche M, Shellard RC, Sigl G, Silli G, Sima O, Šmída R, Sommers P, Soriano JF, Souchard J, Squartini R, Stadelmaier M, Stanca D, Stanič S, Stasielak J, Stassi P, Streich A, Suárez-Durán M, Sudholz T, Suomijärvi T, Supanitsky AD, Šupík J, Szadkowski Z, Taboada A, Tapia A, Timmermans C, Tkachenko O, Tobiska P, Todero Peixoto CJ, Tomé B, Torralba Elipe G, Travaini A, Travnicek P, Trimarelli C, Trini M, Tueros M, Ulrich R, Unger M, Vaclavek L, Vacula M, Valdés Galicia JF, Valiño I, Valore L, Varela E, Varma K C V, Vásquez-Ramírez A, Veberič D, Ventura C, Vergara Quispe ID, Verzi V, Vicha J, Vink J, Vorobiov S, Wahlberg H, Watson AA, 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.
PMID: 33929235
Phys Rev Lett. 2021 Apr 16;126(15):152002. doi: 10.1103/PhysRevLett.126.152002.

We present the first measurement of the fluctuations in the number of muons in extensive air showers produced by ultrahigh energy cosmic rays. We find that the measured fluctuations are in good agreement with predictions from air shower simulations....

Observation of the suppression of the flux of cosmic rays above 4 x 10 (19) eV.

Physical review letters

Abraham J, Abreu P, Aglietta M, Aguirre C, Allard D, Allekotte I, Allen J, Allison P, Alvarez-Muñiz J, Ambrosio M, Anchordoqui L, Andringa S, Anzalone A, Aramo C, Argirò S, Arisaka K, Armengaud E, Arneodo F, Arqueros F, Asch T, Asorey H, Assis P, Atulugama BS, Aublin J, Ave M, Avila G, Bäcker T, Badagnani D, Barbosa AF, Barnhill D, Barroso SL, Baughman B, Bauleo P, Beatty JJ, Beau T, Becker BR, Becker KH, Bellido JA, Benzvi S, Berat C, Bergmann T, Bernardini P, Bertou X, Biermann PL, Billoir P, Blanch-Bigas O, Blanco F, Blasi P, Bleve C, Blümer H, Bohácová M, Bonifazi C, Bonino R, Brack J, Brogueira P, Brown WC, Buchholz P, Bueno A, Burton RE, Busca NG, Caballero-Mora KS, Cai B, Camin DV, Caramete L, Caruso R, Carvalho W, Castellina A, Catalano O, Cataldi G, Cazon L, Cester R, Chauvin J, Chiavassa A, Chinellato JA, Chou A, Chudoba J, Chye J, Clark PD, Clay RW, Colombo E, Conceição R, Connolly B, Contreras F, Coppens J, Cordier A, Cotti U, Coutu S, Covault CE, Creusot A, Criss A, Cronin J, Curutiu A, Dagoret-Campagne S, Daumiller K, Dawson BR, de Almeida RM, De Donato C, de Jong SJ, De La Vega G, Junior WJ, Neto JR, De Mitri I, de Souza V, Del Peral L, Deligny O, Della Selva A, Fratte CD, Dembinski H, Di Giulio C, Diaz JC, Diep PN, Dobrigkeit C, D'Olivo JC, Dong PN, Dornic D, Dorofeev A, Dos Anjos JC, Dova MT, D'Urso D, Dutan I, Duvernois MA, Engel R, Epele L, Erdmann M, Escobar CO, Etchegoyen A, Luis PF, Falcke H, Farrar G, Fauth AC, Fazzini N, Ferrer F, Ferrero A, Fick B, Filevich A, Filipcic A, Fleck I, Fracchiolla CE, Fulgione W, García B, Gámez DG, Garcia-Pinto D, Garrido X, Geenen H, Gelmini G, Gemmeke H, Ghia PL, Giller M, Glass H, Gold MS, Golup G, Albarracin FG, Berisso MG, Gonçalves P, do Amaral MG, Gonzalez D, Gonzalez JG, González M, Góra D, Gorgi A, Gouffon P, Grassi V, Grillo AF, Grunfeld C, Guardincerri Y, Guarino F, Guedes GP, Gutiérrez J, Hague JD, Halenka V, Hamilton JC, Hansen P, Harari D, Harmsma S, Harton JL, Haungs A, Hauschildt T, Healy MD, Hebbeker T, Hebrero G, Heck D, Hojvat C, Holmes VC, Homola P, Hörandel JR, Horneffer A, Hrabovský M, Huege T, Hussain M, Iarlori M, Insolia A, Ionita F, Italiano A, Kaducak M, Kampert KH, Karova T, Kasper P, Kégl B, Keilhauer B, Kemp E, Kieckhafer RM, Klages HO, Kleifges M, Kleinfeller J, Knapik R, Knapp J, Koang DH, Krieger A, Krömer O, Kuempel D, Kunka N, Kusenko A, La Rosa G, Lachaud C, Lago BL, Lebrun D, Lebrun P, Lee J, de Oliveira MA, Letessier-Selvon A, Leuthold M, Lhenry-Yvon I, López R, Agüera AL, Bahilo JL, Lucero A, García RL, Maccarone MC, Macolino C, Maldera S, Mancarella G, Manceñido ME, Mandat D, Mantsch P, Mariazzi AG, Maris IC, Falcon HR, Martello D, Martínez J, Bravo OM, Mathes HJ, Matthews J, Matthews JA, Matthiae G, Maurizio D, Mazur PO, McCauley T, McEwen M, McNeil RR, Medina MC, Medina-Tanco G, Melo D, Menichetti E, Menschikov A, Meurer C, Meyhandan R, Micheletti MI, Miele G, Miller W, Mollerach S, Monasor M, Ragaigne DM, Montanet F, Morales B, Morello C, Moreno JC, Morris C, Mostafá M, Muller MA, Mussa R, Navarra G, Navarro JL, Navas S, Necesal P, Nellen L, Newman-Holmes C, Newton D, Nhung PT, Nierstenhoefer N, Nitz D, Nosek D, Nozka L, Oehlschläger J, Ohnuki T, Olinto A, Olmos-Gilbaja VM, Ortiz M, Ortolani F, Ostapchenko S, Otero L, Pacheco N, Selmi-Dei DP, Palatka M, Pallotta J, Parente G, Parizot E, Parlati S, Pastor S, Patel M, Paul T, Pavlidou V, Payet K, Pech M, Pekala J, Pelayo R, Pepe IM, Perrone L, Pesce R, Petrera S, Petrinca P, Petrov Y, Pichel A, Piegaia R, Pierog T, Pimenta M, Pinto T, Pirronello V, Pisanti O, Platino M, Pochon J, Privitera P, Prouza M, Quel EJ, Rautenberg J, Redondo A, Reucroft S, Revenu B, Rezende FA, Ridky J, Riggi S, Risse M, Rivière C, Rizi V, Roberts M, Robledo C, Rodriguez G, Martino JR, Rojo JR, Rodriguez-Cabo I, Rodríguez-Frías MD, Ros G, Rosado J, Roth M, Rouillé-d'Orfeuil B, Roulet E, Rovero AC, Salamida F, Salazar H, Salina G, Sánchez F, Santander M, Santo CE, Santos EM, Sarazin F, Sarkar S, Sato R, Scherini V, Schieler H, Schmidt A, Schmidt F, Schmidt T, Scholten O, Schovánek P, Schroeder F, Schulte S, Schüssler F, Sciutto SJ, Scuderi M, Segreto A, Semikoz D, Settimo M, Shellard RC, Sidelnik I, Siffert BB, Sigl G, Grande NS, Smiałkowski A, Smída R, Smith AG, Smith BE, Snow GR, Sokolsky P, Sommers P, Sorokin J, Spinka H, Squartini R, Strazzeri E, Stutz A, Suarez F, Suomijärvi T, Supanitsky AD, Sutherland MS, Swain J, Szadkowski Z, Takahashi J, Tamashiro A, Tamburro A, Tarutina T, Taşcău O, Tcaciuc R, Thao NT, Thomas D, Ticona R, Tiffenberg J, Timmermans C, Tkaczyk W, Peixoto CJ, Tomé B, Tonachini A, Torres I, Travnicek P, Tripathi A, Tristram G, Tscherniakhovski D, Tuci V, Tueros M, Tunnicliffe V, Ulrich R, Unger M, Urban M, Galicia JF, Valiño I, Valore L, van den Berg AM, van Elewyck V, Vázquez RA, Veberic D, Veiga A, Velarde A, Venters T, Verzi V, Videla M, Villaseñor L, Vorobiov S, Voyvodic L, Wahlberg H, Wahrlich P, Wainberg O, Walker P, Warner D, Watson AA, Westerhoff S, Wieczorek G, Wiencke L, Wilczyńska B, Wilczyński H, Wileman C, Winnick MG, Wu H, Wundheiler B, Yamamoto T, Younk P, Zas E, Zavrtanik D, Zavrtanik M, Zaw I, Zepeda A, Ziolkowski M.
PMID: 18764444
Phys Rev Lett. 2008 Aug 08;101(6):061101. doi: 10.1103/PhysRevLett.101.061101. Epub 2008 Aug 04.

The energy spectrum of cosmic rays above 2.5 x 10;{18} eV, derived from 20,000 events recorded at the Pierre Auger Observatory, is described. The spectral index gamma of the particle flux, J proportional, variantE;{-gamma}, at energies between 4 x...

Correlation of the highest-energy cosmic rays with nearby extragalactic objects.

Science (New York, N.Y.)

, Abraham J, Abreu P, Aglietta M, Aguirre C, Allard D, Allekotte I, Allen J, Allison P, Alvarez C, Alvarez-Muñiz J, Ambrosio M, Anchordoqui L, Andringa S, Anzalone A, Aramo C, Argirò S, Arisaka K, Armengaud E, Arneodo F, Arqueros F, Asch T, Asorey H, Assis P, Atulugama BS, Aublin J, Ave M, Avila G, Bäcker T, Badagnani D, Barbosa AF, Barnhill D, Barroso SL, Bauleo P, Beatty J, Beau T, Becker BR, Becker KH, Bellido JA, Benzvi S, Berat C, Bergmann T, Bernardini P, Bertou X, Biermann PL, Billoir P, Blanch-Bigas O, Blanco F, Blasi P, Bleve C, Blümer H, Bohácová M, Bonifazi C, Bonino R, Boratav M, Brack J, Brogueira P, Brown WC, Buchholz P, Bueno A, Busca NG, Caballero-Mora KS, Cai B, Camin DV, Caruso R, Carvalho W, Castellina A, Catalano O, Cataldi G, Cazón-Boado L, Cester R, Chauvin J, Chiavassa A, Chinellato JA, Chou A, Chye J, Clark PD, Clay RW, Colombo E, Conceição R, Connolly B, Contreras F, Coppens J, Cordier A, Cotti U, Coutu S, Covault CE, Creusot A, Cronin J, Dagoret-Campagne S, Daumiller K, Dawson BR, de Almeida RM, De Donato C, de Jong SJ, De La Vega G, de Mello Junior WJ, de Mello Neto JR, De Mitri I, de Souza V, Del Peral L, Deligny O, Selva AD, Fratte CD, Dembinski H, Di Giulio C, Diaz JC, Dobrigkeit C, D'Olivo JC, Dornic D, Dorofeev A, Dos Anjos JC, Dova MT, D'Urso D, Duvernois MA, Engel R, Epele L, Erdmann M, Escobar CO, Etchegoyen A, Facal San Luis P, Falcke H, Farrar G, Fauth AC, Fazzini N, Fernández A, Ferrer F, Ferry S, Fick B, Filevich A, Filipcic A, Fleck I, Fonte R, Fracchiolla CE, Fulgione W, García B, García Gámez D, Garcia-Pinto D, Garrido X, Geenen H, Gelmini G, Gemmeke H, Ghia PL, Giller M, Glass H, Gold MS, Golup G, Albarracin FG, Berisso MG, Herrero RG, Gonçalves P, Gonçalves do Amaral M, Gonzalez D, Gonzalez JG, González M, Góra D, Gorgi A, Gouffon P, Grassi V, Grillo A, Grunfeld C, Guardincerri Y, Guarino F, Guedes GP, Gutiérrez J, Hague JD, Hamilton JC, Hansen P, Harari D, Harmsma S, Harton JL, Haungs A, Hauschildt T, Healy MD, Hebbeker 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PMID: 17991855
Science. 2007 Nov 09;318(5852):938-43. doi: 10.1126/science.1151124.

Using data collected at the Pierre Auger Observatory during the past 3.7 years, we demonstrated a correlation between the arrival directions of cosmic rays with energy above 6 x 10(19) electron volts and the positions of active galactic nuclei...

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