Cosmic Ray Anisotropy as Signature for the Transition from Galactic to Extragalactic Cosmic Rays
Reads0
Chats0
TLDR
In this article, the authors constrain the energy at which the transition from Galactic to extragalactic cosmic rays occurs by computing the anisotropy at Earth of cosmic rays emitted by Galactic sources.Abstract:
We constrain the energy at which the transition from Galactic to extragalactic cosmic rays occurs by computing the anisotropy at Earth of cosmic rays emitted by Galactic sources. Since the diffusion approximation starts to loose its validity for E/Z >~ 10^(16-17) eV, we propagate individual cosmic rays (CRs) using Galactic magnetic field models and taking into account both their regular and turbulent components. The turbulent field is generated on a nested grid which allows spatial resolution down to fractions of a parsec. Assuming sufficiently frequent Galactic CR sources, the dipole amplitude computed for a mostly light or intermediate primary composition exceeds the dipole bounds measured by the Auger collaboration around E ~ 10^18 eV. Therefore, a transition at the ankle or above would require a heavy composition or a rather extreme Galactic magnetic field with strength >~ 10 muG. Moreover, the fast rising proton contribution suggested by KASCADE-Grande data between 10^17 eV and 10^18 eV should be of extragalactic origin. In case heavy nuclei dominate the flux at E >~ 10^18 eV, the transition energy can be close to the ankle, if Galactic CRs are produced by sufficiently frequent transients as e.g. magnetars.read more
Citations
More filters
Journal ArticleDOI
CRPropa 3-a public astrophysical simulation framework for propagating extraterrestrial ultra-high energy particles
Rafael Alves Batista,Rafael Alves Batista,Andrej Dundovic,Martin Erdmann,Karl-Heinz Kampert,Daniel Kuempel,Gero Müller,Guenter Sigl,Arjen van Vliet,Arjen van Vliet,David Walz,Tobias Winchen,Tobias Winchen,Tobias Winchen +13 more
TL;DR: The simulation framework CRPropa as discussed by the authors is designed for efficient development of astrophysical predictions for ultra-high energy particles and includes new physical features such as an interface for galactic propagation using lensing techniques, an improved photonuclear interaction calculation, and propagation in time dependent environments to take into account cosmic evolution effects in anisotropy studies and variable sources.
Journal ArticleDOI
Ultra high energy cosmic rays: implications of Auger data for source spectra and chemical composition
TL;DR: In this article, a kinetic-equation approach was used to describe the propagation of ultra high energy cosmic ray protons and nuclei and calculate the expected spectra and mass composition at the Earth for different assumptions on the source injection spectra.
Journal ArticleDOI
Open questions in cosmic-ray research at ultrahigh energies
Rafael Alves Batista,Jonathan Biteau,Mauricio Bustamante,Klaus Dolag,Klaus Dolag,Ralph Engel,Ke Fang,Karl-Heinz Kampert,Dmitriy Kostunin,Miguel Mostafá,Kohta Murase,Kohta Murase,Foteini Oikonomou,Angela V. Olinto,Mikhail Panasyuk,Guenter Sigl,Andrew M. Taylor,Michael Unger +17 more
TL;DR: In this paper, the authors review open questions and prospects for progress in ultra-high-energy cosmic ray (UHECR) research, based on a series of discussions that took place during the MIAPP workshop in 2018.
Journal ArticleDOI
Transition from galactic to extragalactic cosmic rays
TL;DR: In this paper, three models of transition between galactic and extragalactic cosmic rays are discussed: ankle, dip and mixed composition models, where a heavy galactic component is changed at the transition to a lighter or proton component.
Journal ArticleDOI
Constraints on the origin of cosmic rays above 10(18) eV from large-scale anisotropy searches in data of the Pierre Auger Observatory
P. Abreu,Marco Aglietta,Markus Ahlers,Eun-Joo Ahn,Ivone F. M. Albuquerque,D. Allard,I. Allekotte,J. Allen,Patrick Allison,Alejandro Almela,J. Alvarez Castillo,Jaime Alvarez-Muñiz,R. Alves Batista,M. Ambrosio,Amin Aminaei,Luis A. Anchordoqui,Sofia Andringa,T. Antičić,C. Aramo,Ernesto Arganda,F. Arqueros,Hernán Gonzalo Asorey,Pedro Assis,Julien Aublin,M. Ave,M. Avenier,Gualberto Avila,Alina Mihaela Badescu,Matthias Balzer,K. B. Barber,A. F. Barbosa,Rémi Bardenet,S. L.C. Barroso,B. M. Baughman,B. M. Baughman,J. Bäuml,Colin Baus,J. J. Beatty,K.-H. Becker,A. Bellétoile,Jose A. Bellido,Segev BenZvi,Corinne Berat,Xavier Bertou,Peter L. Biermann,Pierre Billoir,Francisco J. Blanco,M. Blanco,C. Bleve,H. Blümer,Martina Bohacova,Denise Boncioli,Carla Bonifazi,R. Bonino,Nataliia Borodai,Jeffrey Brack,I.M. Brancus,P. Brogueira,W. C. Brown,R. Bruijn,Peter Buchholz,Antonio Bueno,L. Buroker,R. E. Burton,Karen S. Caballero-Mora,B. Caccianiga,L. Caramete,Rossella Caruso,Antonella Castellina,Onofrio A. Catalano,G. Cataldi,Lorenzo Cazon,R. Cester,J. Chauvin,S. H. Cheng,A. Chiavassa,Jose Chinellato,J. Chirinos Diaz,Jiri Chudoba,Marco Cilmo,Roger W Clay,G. Cocciolo,L. Collica,Maria Rita Coluccia,R. Conceição,Fernando Contreras,H. Cook,M. J. Cooper,J. Coppens,A. Cordier,S. Coutu,Corbin Covault,A. Creusot,A. Criss,J. W. Cronin,A. Curutiu,S. Dagoret-Campagne,Richard Dallier,Bruno Daniel,Sergio Dasso,Kai Daumiller,Bruce R. Dawson,R. M. de Almeida,M. De Domenico,C. De Donato,S. J. De Jong,G. De La Vega,W. J. M. de Mello Junior,J. R. T. de Mello Neto,I. De Mitri,V. de Souza,K. D. de Vries,L. del Peral,M. del Río,Olivier Deligny,H. Dembinski,Niraj Dhital,C. Di Giulio,M. L. Díaz Castro,Pham Ngoc Diep,F. Diogo,Carola Dobrigkeit,W. Docters,Juan Carlos D'Olivo,P. N. Dong,A. Dorofeev,J. C. dos Anjos,Maria-Teresa Dova,D. D'Urso,I. Dutan,Jan Ebr,Ralph Engel,Martin Erdmann,Carlos Escobar,J. Espadanal,A. Etchegoyen,P. Facal San Luis,Heino Falcke,Heino Falcke,Ke Fang,G. Farrar,A. C. Fauth,N. Fazzini,A. P. Ferguson,Brian Fick,Juan Manuel Figueira,Alberto Filevich,A. Filipčič,S. Fliescher,C. E. Fracchiolla,E. D. Fraenkel,Octavian Fratu,U. Fröhlich,Béatrice Fuchs,R. Gaior,R. F. Gamarra,S. Gambetta,B. García,S. T. Garcia Roca,D. Garcia-Gamez,D. Garcia-Pinto,G. Garilli,A. Gascon Bravo,H. Gemmeke,P. L. Ghia,M. Giller,J. Gitto,H. Glass,M. Gold,G. Golup,F. Gomez Albarracin,M. Gómez Berisso,P.F. Gómez Vitale,P. Goncalves,J. G. Gonzalez,B. Gookin,A. Gorgi,P. Gouffon,E. Grashorn,S. Grebe,N. Griffith,A. F. Grillo,Y. Guardincerri,F. Guarino,G. P. Guedes,Peter Hansen,D. Harari,Thomas Harrison,J. L. Harton,A. Haungs,Thomas Hebbeker,D. Heck,Alain Hervé,G. C. Hill,C. Hojvat,N. Hollon,V. C. Holmes,Piotr Homola,Jörg R. Hörandel,Pavel Horvath,Miroslav Hrabovský,D. Huber,T. Huege,A. Insolia,F. Ionita,A. Italiano,S. Jansen,C. Jarne,S. Jiraskova,M. Josebachuili,Kreso Kadija,K. H. Kampert,P. Karhan,P. H. Kasper,Igor Katkov,Balázs Kégl,B. Keilhauer,Azadeh Keivani,J. L. Kelley,E. Kemp,R. M. Kieckhafer,H.O. Klages,M. Kleifges,J. Kleinfeller,J. Knapp,D. H. Koang,K. Kotera,N. Krohm,O. Krömer,D. Kruppke-Hansen,Daniel Kuempel,J. K. Kulbartz,N. Kunka,G. La Rosa,C. Lachaud,Danielle LaHurd,Luca Latronico,R. J. Lauer,P. Lautridou,S. Le Coz,M. S. A. B. Leão,D. Lebrun,P. Lebrun,M. A. Leigui de Oliveira,A. Letessier-Selvon,I. Lhenry-Yvon,K. Link,R. López,A. Lopez Agüera,K. Louedec,J. Lozano Bahilo,Lu Lu,A. Lucero,M. Ludwig,H. Lyberis,M. C. Maccarone,C. Macolino,S. Maldera,J. Maller,Dusan Mandat,P. Mantsch,A. G. Mariazzi,J. C. Marin,V. Marin,I. C. Mariş,H. R. Marquez Falcon,G. Marsella,D. Martello,L. Martin,H. Martinez,O. Martínez Bravo,D. Martraire,J. J. Masías Meza,H. J. Mathes,John Matthews,J. A.J. Matthews,G. Matthiae,D. Maurel,D. Maurizio,P.O. Mazur,G. Medina-Tanco,M. Melissas,D. Melo,E. Menichetti,A. Menshikov,Philipp Mertsch,S. Messina,C. Meurer,R. Meyhandan,Sasa Micanovic,M. I. Micheletti,I. A. Minaya,Lino Miramonti,L. Molina-Bueno,Silvia Mollerach,M. Monasor,D. Monnier Ragaigne,F. Montanet,B. Morales,C. Morello,E. Moreno,Juan Moreno,Miguel Mostafá,C. A. Moura,Marcio Aparecido Muller,G. Müller,Moritz Münchmeyer,R. Mussa,G. Navarra,G. Navarra,J. L. Navarro,S. Navas,P. Necesal,L. Nellen,A. Nelles,J. Neuser,P. T. Nhung,Marcus Niechciol,L. Niemietz,N. Nierstenhoefer,D. Nitz,D. Nosek,L. Nožka,J. Oehlschläger,Angela V. Olinto,M.E. Ortiz,N. Pacheco,D. Pakk Selmi-Dei,M. Palatka,J. Pallotta,N. Palmieri,G. Parente,E. Parizot,A. Parra,Sergio Pastor,T. Paul,Miroslav Pech,J. Pȩkala,R. Pelayo,Iuri Muniz Pepe,L. Perrone,R. Pesce,E. Petermann,S. Petrera,A. Petrolini,Y. Petrov,C. Pfendner,R. Piegaia,T. Pierog,P. Pieroni,M. Pimenta,V. Pirronello,M. Platino,M. Plum,V. H. Ponce,M. Pontz,A. Porcelli,Paolo Privitera,M. Prouza,E. J. Quel,S. Querchfeld,J. Rautenberg,O. Ravel,D. Ravignani,B. Revenu,J. Ridky,S. Riggi,M. Risse,P. Ristori,H. Rivera,Vincenzo Rizi,J. Roberts,W. Rodrigues de Carvalho,G. Rodriguez,I. Rodriguez Cabo,J. Rodriguez Martino,J. Rodriguez Rojo,M. D. Rodríguez-Frías,German Ros,Jaime Rosado,T. Rossler,Markus Roth,B. Rouillé-D'Orfeuil,Esteban Roulet,A. C. Rovero,C. Rühle,Alexandra Saftoiu,F. Salamida,Humberto Ibarguen Salazar,F. Salesa Greus,G. Salina,F. Sánchez,C. E. Santo,Elton J. G. Santos,E. M. Santos,F. Sarazin,B. Sarkar,Subir Sarkar,R. Sato,N. Scharf,V. Scherini,H. Schieler,Peter Schiffer,A. Schmidt,Olaf Scholten,H. Schoorlemmer,J. Schovancova,Petr Schovanek,F.G. Schröder,D. Schuster,S. J. Sciutto,Mario Scuderi,A. Segreto,Mariangela Settimo,A. Shadkam,R. C. Shellard,Iván Sidelnik,Günter Sigl,H. H. Silva Lopez,Octavian Sima,A. Smialkowski,Radomir Smida,Gregory R Snow,Paul Sommers,J. Sorokin,H. M. Spinka,R. Squartini,Yogendra N. Srivastava,Samo Stanič,J. Stapleton,J. Stasielak,Maurice Stephan,A. Stutz,F. Suarez,T. Suomijärvi,Alberto Daniel Supanitsky,T. Susa,M. S. Sutherland,J. D. Swain,Z. Szadkowski,M. Szuba,A. Tapia,M. Tartare,O. Taşcǎu,R. Tcaciuc,N. T. Thao,D. Thomas,Javier Tiffenberg,C. J.W.P. Timmermans,W. Tkaczyk,C. J. Todero Peixoto,G. Toma,L. Tomankova,B. Tome,A. Tonachini,G. Torralba Elipe,Petr Travnicek,D. B. Tridapalli,G. Tristram,E. Trovato,Matias Tueros,Ralf Ulrich,M. Unger,Michael Urban,J. F. Valdés Galicia,I. Valiño,L. Valore,G. van Aar,A.M. van den Berg,S. van Velzen,A. van Vliet,E. Varela,B. Vargas Cárdenas,J. R. Vázquez,R. A. Vázquez,Darko Veberič,V. Verzi,J. Vicha,M. Videla,L. Villaseñor,Hernan Wahlberg,P. Wahrlich,O. Wainberg,David Walz,Alan Watson,Marc Weber,K. Weidenhaupt,A. Weindl,F. Werner,S. Westerhoff,B. J. Whelan,A. Widom,G. Wieczorek,L. R. Wiencke,B. Wilczynska,H. Wilczyński,M. Will,C. L. Williams,Tobias Winchen,M. Wommer,B. Wundheiler,T. Yamamoto,T. Yapici,P. W. Younk,G. Yuan,Alexey Yushkov,B. Zamorano Garcia,Enrique Zas,D. Zavrtanik,M. Zavrtanik,I. Zaw,A. Zepeda,Jing Zhou,Yingchun Zhu,M. Zimbres Silva,M. Ziolkowski +515 more
TL;DR: In this paper, a thorough search for large-scale anisotropies in the distribution of arrival directions of cosmic rays detected above 10(18) eV at the Pierre Auger Observatory is reported.
References
More filters
Journal ArticleDOI
End to the cosmic ray spectrum
TL;DR: The primary cosmic-ray spectrum has been measured up to an energy of $10^{20}$ eV, and several groups have described projects under development or in mind to investigate the spectrum further, into the energy range of 10^{21}-10^{22} eV as mentioned in this paper.
Journal ArticleDOI
Propagation of Cosmic-Ray Nucleons in the Galaxy
TL;DR: In this paper, a method for the numerical computation of the propagation of primary and secondary nucleons, primary electrons, and secondary positrons and electrons is described, and the height of the halo propagation region is determined using recent 10Be/9Be measurements.
The Pierre Auger Collaboration
Martin Will,Lawrence Wiencke,B WilczyÅska,H WilczyÅski,B. J. Whelan,A. Widom,G. Wieczorek,S. Westerhoff,F. Werner,Andreas Weindl,K. Weidenhaupt,Marc Weber,David Walz,Alan Watson,O. Wainberg,H. Wahlberg,P. Wahrlich,L Villaseñor,M. Videla,Jakub Vicha,R A Vázquez,D VeberiÄ,V. Verzi,J R Vázquez,E. Varela,B Vargas Cárdenas,Laura Valore,A.M. van den Berg,Martin Urban,J F Valdés Galicia,Michael Unger,R. Ulrich,E. Trovato,Matias Tueros,G. Tristram,D. B. Tridapalli,A. Tonachini,Petr Travnicek,B TomÃ,L. Tomankova,G. Toma,C. J. Todero Peixoto,Charles Timmermans,W. Tkaczyk,Javier Tiffenberg,N. T. Thao,Deepa Thomas,R. Tcaciuc,O TaÅcÄu,M. Tartare,Alex Tapia,M. Szuba,John Swain,Zbigniew Szadkowski,M. S. Sutherland,T Å uÅ¡a,A.D. Supanitsky,T Suomijärvi,Federico Suarez,A. Stutz,Maurice Stephan,J. Stapleton,Jaroslaw Stasielak,Yogendra N. Srivastava,S. Stanič,H. M. Spinka,Ruben Squartini,J. Sorokin,Gregory R Snow,Paul Sommers,R Å mÃda,A SmiaÅ kowski,Octavian Sima,H. H. Silva Lopez,Günter Sigl,Iván Sidelnik,R. C. Shellard,M. Settimo,A. Shadkam,Alberto Segreto,Mario Scuderi,D. Schuster,Sergio Sciutto,Sebastian Schulte,F Schröder,P Schovánek,J. Schovancova,Harm Schoorlemmer,Olaf Scholten,A. Schmidt,P. Schiffer,V. Scherini,Harald Schieler,N. Scharf,Subir Sarkar,R. Sato,B. Sarkar,Fred Sarazin,E. M. Santos,Elton J. G. Santos,C. E. Santo,F Sánchez,Gaetano Salina,F. Salamida,Humberto Ibarguen Salazar,F. Salesa Greus,Alexandra Saftoiu,A. C. Rovero,C Rühle,Esteban Roulet,B Rouillé-d'Orfeuil,Markus Roth,T. Rossler,Jaime Rosado,German Ros,RodrÃguez-FrÃas,J. Rodriguez Rojo,I. Rodriguez Cabo,J. Rodriguez Martino,G. R. Gonzalvo Rodriguez,Jay Roberts,W. Rodrigues de Carvalho,Vincenzo Rizi,H. Rivera,Markus Risse,Pablo Ristori,Jan Ridky,S. Riggi,Benoît Revenu,Olivier Ravel,Diego Ravignani,Sven Querchfeld,Julian Rautenberg,Eduardo Quel,M. Prouza,A. Porcelli,Paolo Privitera,M. Pontz,V. H. Ponce,M. Plum,Manuel Platino,Valerio Pirronello,Mário Pimenta,Tanguy Pierog,P. Pieroni,R. Piegaia,Carl Pfendner,A. Petrolini,Y. Petrov,R. Pesce,E. Petermann,Sergio Petrera,L. Perrone,Miroslav Pech,Jan Pękala,Rodrigo Pelayo,I. M. Pepe,T. Paul,A. Parra,Sergio Pastor,G. Parente,E. Parizot,N. Palmieri,Miroslav Palatka,Juan Pallotta,D. Pakk Selmi-Dei,N. Pacheco,M.E. Ortiz,Angela V. Olinto,J Oehlschläger,L Nožka,D. Nitz,D. Nosek,L. Niemietz,N. Nierstenhoefer,P. T. Nhung,Marcus Niechciol,J. Neuser,P. Necesal,Lukas Nellen,A. Nelles,J. L. Navarro,S. Navas,G. Navarra,Roberto Mussa,M Münchmeyer,Marcio Aparecido Muller,G Müller,C. A. Moura,M MostafÃ,Juan Moreno,E. Moreno,C. Morello,B. Morales,D. Monnier Ragaigne,F. Montanet,M. Monasor,Silvia Mollerach,L. Molina-Bueno,I. A. Minaya,Lino Miramonti,M. I. Micheletti,Sasa Micanovic,C. Meurer,P. Mertsch,E. Menichetti,A. Menshikov,D. Melo,M. Melissas,D. Maurizio,Peter Mazur,Gustavo Medina-Tanco,D. Maurel,G. Matthiae,John N. Matthews,Matthews J.A.J.,Hermann-Josef Mathes,H. Martinez,O MartÃnez Bravo,L. Martin,D. Martello,G. Marsella,H. R. Marquez Falcon,Ioana Codrina Maris,Julio C. Marín,Vincent Marin,Paul M. Mantsch,A. G. Mariazzi,Dusan Mandat,S. Maldera,M. C. Maccarone,C. Macolino,H. Lyberis,A. Lucero,M. Ludwig,Lu Lu,J. Lozano Bahilo,A Lopez Agüera,K. Louedec,R López,Katrin Link,I. Lhenry-Yvon,Ph. Lebrun,M. A. Leigui de Oliveira,Antoine Letessier-Selvon,Leão M.S.A.B.,D. Lebrun,Coz S. Le,Pascal Lautridou,R. J. Lauer,Danielle LaHurd,Luca Latronico,C. Lachaud,Rosa G. La,Norbert Kunka,Daniel Kuempel,J. K. Kulbartz,F. Kuehn,D. Kruppke-Hansen,O Krömer,N. Krohm,K. Kotera,Koang D.-H.,Jonny Kleinfeller,J. Knapp,Matthias Kleifges,Hans Klages,Ernesto Kemp,R.M. Kieckhafer,J. L. Kelley,A. Keivani,Bianca Keilhauer,B Kégl,P. H. Kasper,I. Katkov,P. Karhan,Kreso Kadija,Karl-Heinz Kampert,S. Jiraskova,M. Josebachuili,A. Italiano,C. Jarne,F. Ionita,Antonio Insolia,D. Huber,Tim Huege,Pavel Horvath,M. HrabovskÃ,J R Hörandel,V. C. Holmes,Piotr Homola,N. Hollon,Carlos Hojvat,Dieter Heck,A.E. Herve,Andreas Haungs,T. Hebbeker,John L. Harton,Thomas Harrison,Diego Harari,Peter Hansen,Germano Guedes,Fausto Guarino,Y. Guardincerri,Alexander Grillo,N. Griffith,M. Grigat,E. Grashorn,S. Grebe,P. Gouffon,B. Gookin,Alessio Gorgi,J. G. Gonzalez,P Gonçalves,M Gómez Berisso,P F Gómez Vitale,F. Gomez Albarracin,H. Glass,M. Gold,Geraldina Golup,Maria Giller,J. Gitto,Piera Luisa Ghia,A. Gascon Bravo,H. Gemmeke,D. Garcia-Pinto,S. T. Garcia Roca,D. Garcia-Gamez,Silvia Gambetta,R. F. Gamarra,R. Gaior,Béatrice Fuchs,U Fröhlich,Octavian Fratu,E. D. Fraenkel,C. E. Fracchiolla,S. Fliescher,Alberto Filevich,A FilipÄiÄ,Brian Fick,Norberto Fazzini,A. P. Ferguson,Heino Falcke,Glennys R. Farrar,Anderson Fauth,P. Facal San Luis,A chegoyen,Martin Erdmann,Carlos Escobar,J. Espadanal,Ralph Engel,I. Dutan,Jan Ebr,D. D'Urso,Maria-Teresa Dova,P. N. Dong,A. Dorofeev,J. C. dos Anjos,Carola Dobrigkeit,W. Docters,Juan Carlos D'Olivo,F. Diogo,M L DÃaz Castro,Pham Ngoc Diep,C. Di Giulio,Niraj Dhital,H. Dembinski,Olivier Deligny,L. del Peral,K. D. de Vries,V. de Souza,I. De Mitri,de Mello Neto J.R.T.,S. J. De Jong,G. De La Vega,de Mello Junior W.J.M.,M. De Domenico,C. De Donato,Bruce R. Dawson,R. M. de Almeida,Kai Daumiller,Sergio Dasso,Bruno Daniel,Richard Dallier,S. Dagoret-Campagne,A. Curutiu,J. W. Cronin,A. Criss,A. Creusot,S. Coutu,Corbin Covault,J. Coppens,A. Cordier,M. J. Cooper,H. Cook,Fernando Contreras,Maria Rita Coluccia,Roger W Clay,Marco Cilmo,Jiri Chudoba,Diaz J. Chirinos,Jose Chinellato,Andrea Chiavassa,S. H. Cheng,J. Chauvin,R. Cester,Lorenzo Cazon,G. Cataldi,Onofrio A. Catalano,Antonella Castellina,Rossella Caruso,L. Caramete,B. Caccianiga,Karen S. Caballero-Mora,R. E. Burton,Antonio Bueno,Peter Buchholz,W. C. Brown,R. Bruijn,P. Brogueira,Jeffrey Brack,I.M. Brancus,Nataliia Borodai,R. Bonino,Carla Bonifazi,Denise Boncioli,H Blümer,M BoháÄová,C. Bleve,M. Blanco,Francisco J. Blanco,P. Billoir,Peter L. Biermann,Xavier Bertou,Corinne Berat,Segev BenZvi,Jose A. Bellido,A Bellétoile,B. R. Becker,K. H. Becker,J. J. Beatty,J Bäuml,B. M. Baughman,Barroso S.L.C.,Rémi Bardenet,A. F. Barbosa,K. B. Barber,Matthias Balzer,Alina Mihaela Badescu,T Bäcker,Gualberto Avila,M. Avenier,M. Ave,Julien Aublin,Pedro Assis,Hernán Asorey,Ernesto Arganda,F. Arqueros,C. Aramo,T AntiÄi'c,Sofia Andringa,Luis A. Anchordoqui,Amin Aminaei,M. Ambrosio,R. Alves Batista,J Alvarez-Muñiz,J. Alvarez Castillo,Patrick Allison,Alejandro Almela,J. Allen,Ingomar Allekotte,D. Allard,Albuquerque I.F.M.,Markus Ahlers,Eun-Joo Ahn,Marco Aglietta,P. Abreu,C. L. Williams,Tobias Winchen,M. Wommer,B. Wundheiler,T. Yamamoto,T. Yapici,P. W. Younk,G. Yuan,A. N. Yushkov,B. Zamorano Garcia,Enrique Zas,Danilo Zavrtanik,M. Zavrtanik,I. Zaw,Arnulfo Zepeda,Yingchun Zhu,M. Zimbres Silva,M. Ziolkowski +494 more
TL;DR: In this article, the Pierre Auger Collaboration has reported evidence for anisotropies in the arrival directions of cosmic rays with energies larger thanEth = 55 EeV and showed that there is a correlation above the isotropic expectation with nearby active galaxies and the largest excess is in a celestial region around the position of the radio galaxy Cen A.
Journal ArticleDOI
Cosmological gamma-ray bursts and the highest energy cosmic rays.
TL;DR: A scenario in which the highest energy cosmic rays (CR's) and cosmological-ray bursts (GRB's) have a common origin is discussed, consistent with the observed CR flux above 1${0}^{20}$ eV.
Journal ArticleDOI
The Transport of Cosmic Rays across a Turbulent Magnetic Field
Joe Giacalone,J. R. Jokipii +1 more
TL;DR: In this article, the authors present a new analysis of the transport of cosmic rays in a turbulent magnetic field that varies in all three spatial dimensions using a numerical simulation that integrates the trajectories of an ensemble of test particles from which they obtain diffusion coefficients based on the particle motions.
Related Papers (5)
PAMELA Measurements of Cosmic-Ray Proton and Helium Spectra
O. Adriani,O. Adriani,G. C. Barbarino,G. A. Bazilevskaya,Roberto Bellotti,Mirko Boezio,E. A. Bogomolov,Lorenzo Bonechi,Lorenzo Bonechi,M. Bongi,V. Bonvicini,S. V. Borisov,S. Bottai,A. Bruno,F. Cafagna,D. Campana,R. Carbone,Per Carlson,Marco Casolino,G. Castellini,L. Consiglio,M. P. De Pascale,C. De Santis,N. De Simone,V. Di Felice,A. M. Galper,William Gillard,L. A. Grishantseva,Giovanna Jerse,A. V. Karelin,S. V. Koldashov,S. Y. Krutkov,A. N. Kvashnin,A. A. Leonov,V. V. Malakhov,V. Malvezzi,L. Marcelli,A. G. Mayorov,W. Menn,V. V. Mikhailov,E. Mocchiutti,Alfonso Monaco,Nicola Mori,Nicola Mori,N. N. Nikonov,G. Osteria,F. Palma,P. Papini,Mark Pearce,P. Picozza,C. Pizzolotto,Marco Ricci,S. B. Ricciarini,Laura Rossetto,Ritabrata Sarkar,M. Simon,Roberta Sparvoli,P. Spillantini,P. Spillantini,Y. I. Stozhkov,Andrea Vacchi,E. Vannuccini,G. I. Vasilyev,S. A. Voronov,Y. T. Yurkin,Juan Wu,G. Zampa,N. Zampa,V. G. Zverev +68 more
First observation of the Greisen-Zatsepin-Kuzmin suppression.
Rasha Abbasi,Tareq Abu-Zayyad,M. Allen,J. F. Amman,G. Archbold,Konstantin Belov,John Belz,S. Y. Ben Zvi,Douglas Bergman,S. A. Blake,O. A. Brusova,G. W. Burt,C. Cannon,Z. Cao,B. C. Connolly,W. Deng,Y. Fedorova,C. B. Finley,R. C. Gray,William Hanlon,C. M. Hoffman,Michael H. Holzscheiter,Gareth Hughes,P. Hüntemeyer,B. F. Jones,C. C. H. Jui,K. Kim,M. A. Kirn,E. C. Loh,M. M. Maestas,N. Manago,L. J. Marek,K. Martens,John Matthews,John N. Matthews,S. A. Moore,A. O’Neill,C. A. Painter,L. Perera,Kevin Reil,R. Riehle,M. D. Roberts,D. Rodriguez,Naruo Sasaki,Steve Schnetzer,L. M. Scott,G. Sinnis,J. D. Smith,Pierre Sokolsky,C. Song,R. W. Springer,B. T. Stokes,S. B. Thomas,J. R. Thomas,Gordon Thomson,Dale Tupa,S. Westerhoff,Lawrence Wiencke,Xiang Zhang,A. Zech +59 more