Related papers: Anisotropy and Corotation of Galactic Cosmic Rays

A New Maximum-Likelihood Technique for Reconstructing Cosmic-Ray Anisotropy at All Angular Scales

The arrival directions of TeV-PeV cosmic rays show weak but significant anisotropies with relative intensities at the level of one per mille. Due to the smallness of the anisotropies, quantitative studies require careful disentanglement of…

High Energy Astrophysical Phenomena · Physics 2016-05-19 Markus Ahlers , Segev Y. BenZvi , Paolo Desiati , Juan Carlos Díaz-Vélez , Daniel W. Fiorino , Stefan Westerhoff

Anisotropy of Cosmic Rays and Chaotic Trajectories in the Heliosphere

As cosmic rays (CRs) propagate in the Galaxy, they can be affected by magnetic structures that temporarily trap them and cause their trajectories to display chaotic behavior, therefore modifying the simple diffusion scenario. When CRs…

High Energy Astrophysical Phenomena · Physics 2023-02-01 Vanessa López-Barquero , Paolo Desiati

Searches for Anisotropies in the Arrival Directions of the Highest Energy Cosmic Rays Detected by the Pierre Auger Observatory

We analyze the distribution of arrival directions of ultra-high energy cosmic rays recorded at the Pierre Auger Observatory in 10 years of operation. The data set, about three times larger than that used in earlier studies, includes arrival…

High Energy Astrophysical Phenomena · Physics 2015-12-01 Pierre Auger Collaboration

The ubiquitous mechanism accelerating cosmic rays at all the energies

The mechanism accelerating cosmic rays in the Milky Way Galaxy and galaxy clusters is identified and described. The acceleration of cosmic rays is a purely electrostatic process which operates up to the maximum energies of $10^{23}$ eV in…

High Energy Astrophysical Phenomena · Physics 2021-09-10 Antonio Codino

Observation of Cosmic-Ray Anisotropy in the Southern Hemisphere with 12 yr of Data Collected by the IceCube Neutrino Observatory

We analyzed the 7.92$\times 10^{11}$ cosmic-ray-induced muon events collected by the IceCube Neutrino Observatory from May 13, 2011, when the fully constructed experiment started to take data, to May 12, 2023. This dataset provides an…

High Energy Astrophysical Phenomena · Physics 2025-07-30 R. Abbasi , M. Ackermann , J. Adams , S. K. Agarwalla , T. Aguado , J. A. Aguilar , M. Ahlers , J. M. Alameddine , N. M. Amin , K. Andeen , C. Argüelles , Y. Ashida , S. Athanasiadou , S. N. Axani , R. Babu , X. Bai , A. Balagopal V. , M. Baricevic , S. W. Barwick , S. Bash , V. Basu , R. Bay , J. J. Beatty , J. Becker Tjus , J. Beise , C. Bellenghi , S. BenZvi , D. Berley , E. Bernardini , D. Z. Besson , E. Blaufuss , L. Bloom , S. Blot , F. Bontempo , J. Y. Book Motzkin , C. Boscolo Meneguolo , S. Böser , O. Botner , J. Böttcher , J. Braun , B. Brinson , Z. Brisson-Tsavoussis , J. Brostean-Kaiser , L. Brusa , R. T. Burley , D. Butterfield , M. A. Campana , I. Caracas , K. Carloni , J. Carpio , S. Chattopadhyay , N. Chau , Z. Chen , D. Chirkin , S. Choi , B. A. Clark , C. Cochling , A. Coleman , P. Coleman , G. H. Collin , A. Connolly , J. M. Conrad , R. Corley , D. F. Cowen , C. De Clercq , J. J. DeLaunay , D. Delgado , S. Deng , A. Desai , P. Desiati , K. D. de Vries , G. de Wasseige , T. DeYoung , A. Diaz , J. C. Díaz-Vélez , P. Dierichs , M. Dittmer , A. Domi , L. Draper , H. Dujmovic , D. Durnford , K. Dutta , M. A. DuVernois , T. Ehrhardt , L. Eidenschink , A. Eimer , P. Eller , E. Ellinger , S. El Mentawi , D. Elsässer , R. Engel , H. Erpenbeck , W. Esmail , J. Evans , P. A. Evenson , K. L. Fan , K. Fang , K. Farrag , A. R. Fazely , A. Fedynitch , N. Feigl , S. Fiedlschuster , C. Finley , L. Fischer , D. Fox , A. Franckowiak , S. Fukami , P. Fürst , J. Gallagher , E. Ganster , A. Garcia , M. Garcia , G. Garg , E. Genton , L. Gerhardt , A. Ghadimi , C. Girard-Carillo , C. Glaser , T. Glüsenkamp , J. G. Gonzalez , S. Goswami , A. Granados , D. Grant , S. J. Gray , S. Griffin , S. Griswold , K. M. Groth , D. Guevel , C. Günther , P. Gutjahr , K. Gruchot , C. Ha , C. Haack , A. Hallgren , L. Halve , F. Halzen , L. Hamacher , H. Hamdaoui , M. Ha Minh , M. Handt , K. Hanson , J. Hardin , A. A. Harnisch , P. Hatch , A. Haungs , J. Häußler , A. Hardy , W. Hayes , K. Helbing , J. Hellrung , J. Hermannsgabner , L. Heuermann , N. Heyer , S. Hickford , A. Hidvegi , C. Hill , G. C. Hill , R. Hmaid , K. D. Hoffman , S. Hori , K. Hoshina , M. Hostert , W. Hou , T. Huber , K. Hultqvist , M. Hünnefeld , R. Hussain , K. Hymon , A. Ishihara , W. Iwakiri , M. Jacquart , S. Jain , O. Janik , M. Jansson , M. Jeong , M. Jin , B. J. P. Jones , N. Kamp , D. Kang , W. Kang , X. Kang , A. Kappes , D. Kappesser , L. Kardum , T. Karg , M. Karl , A. Karle , A. Katil , U. Katz , M. Kauer , J. L. Kelley , M. Khanal , A. Khatee Zathul , A. Kheirandish , J. Kiryluk , S. R. Klein , Y. Kobayashi , A. Kochocki , R. Koirala , H. Kolanoski , T. Kontrimas , L. Köpke , C. Kopper , D. J. Koskinen , P. Koundal , M. Kowalski , T. Kozynets , N. Krieger , J. Krishnamoorthi , K. Kruiswijk , E. Krupczak , A. Kumar , E. Kun , N. Kurahashi , N. Lad , C. Lagunas Gualda , M. Lamoureux , M. J. Larson , F. Lauber , J. P. Lazar , J. W. Lee , K. Leonard DeHolton , A. Leszczyńska , J. Liao , M. Lincetto , Y. T. Liu , M. Liubarska , C. Love , L. Lu , F. Lucarelli , W. Luszczak , Y. Lyu , J. Madsen , E. Magnus , K. B. M. Mahn , Y. Makino , E. Manao , S. Mancina , A. Mand , W. Marie Sainte , I. C. Mariş , S. Marka , Z. Marka , M. Marsee , I. Martinez-Soler , R. Maruyama , F. Mayhew , F. McNally , J. V. Mead , K. Meagher , S. Mechbal , A. Medina , M. Meier , Y. Merckx , L. Merten , J. Mitchell , T. Montaruli , R. W. Moore , Y. Morii , R. Morse , M. Moulai , A. Moy , T. Mukherjee , R. Naab , M. Nakos , U. Naumann , J. Necker , A. Negi , L. Neste , M. Neumann , H. Niederhausen , M. U. Nisa , K. Noda , A. Noell , A. Novikov , A. Obertacke Pollmann , V. O'Dell , A. Olivas , R. Orsoe , J. Osborn , E. O'Sullivan , V. Palusova , H. Pandya , N. Park , G. K. Parker , V. Parrish , E. N. Paudel , L. Paul , C. Pérez de los Heros , T. Pernice , J. Peterson , A. Pizzuto , M. Plum , A. Pontén , Y. Popovych , M. Prado Rodriguez , B. Pries , R. Procter-Murphy , G. T. Przybylski , L. Pyras , C. Raab , J. Rack-Helleis , N. Rad , M. Ravn , K. Rawlins , Z. Rechav , A. Rehman , E. Resconi , S. Reusch , W. Rhode , B. Riedel , A. Rifaie , E. J. Roberts , S. Robertson , S. Rodan , G. Roellinghoff , M. Rongen , A. Rosted , C. Rott , T. Ruhe , L. Ruohan , D. Ryckbosch , I. Safa , J. Saffer , D. Salazar-Gallegos , P. Sampathkumar , A. Sandrock , M. Santander , S. Sarkar , S. Sarkar , J. Savelberg , P. Savina , P. Schaile , M. Schaufel , H. Schieler , S. Schindler , L. Schlickmann , B. Schlüter , F. Schlüter , N. Schmeisser , E. Schmidt , T. Schmidt , J. Schneider , F. G. Schröder , L. Schumacher , S. Schwirn , S. Sclafani , D. Seckel , L. Seen , M. Seikh , M. Seo , S. Seunarine , P. Sevle Myhr , R. Shah , S. Shefali , N. Shimizu , M. Silva , A. Simmons , B. Skrzypek , B. Smithers , R. Snihur , J. Soedingrekso , A. Søgaard , D. Soldin , P. Soldin , G. Sommani , C. Spannfellner , G. M. Spiczak , C. Spiering , J. Stachurska , M. Stamatikos , T. Stanev , T. Stezelberger , T. Stürwald , T. Stuttard , G. W. Sullivan , I. Taboada , S. Ter-Antonyan , A. Terliuk , M. Thiesmeyer , W. G. Thompson , A. Thorpe , J. Thwaites , S. Tilav , K. Tollefson , C. Tönnis , S. Toscano , D. Tosi , A. Trettin , R. Turcotte , M. A. Unland Elorrieta , A. K. Upadhyay , K. Upshaw , A. Vaidyanathan , N. Valtonen-Mattila , J. Vandenbroucke , N. van Eijndhoven , D. Vannerom , J. van Santen , J. Vara , F. Varsi , J. Veitch-Michaelis , M. Venugopal , M. Vereecken , S. Vergara Carrasco , S. Verpoest , D. Veske , A. Vijai , C. Walck , A. Wang , C. Weaver , P. Weigel , A. Weindl , J. Weldert , A. Y. Wen , C. Wendt , J. Werthebach , M. Weyrauch , N. Whitehorn , C. H. Wiebusch , D. R. Williams , L. Witthaus , M. Wolf , H. Woodward , G. Wrede , X. W. Xu , J. P. Yanez , E. Yildizci , S. Yoshida , R. Young , S. Yu , T. Yuan , A. Zegarelli , S. Zhang , Z. Zhang , P. Zhelnin , P. Zilberman , M. Zimmerman

Cosmic magnetic fields and implications for HE particle anisotropies

I review what is known and surmised about magnetic fields in space, from our Milky Way environment to the distant Universe beyond the GZK horizon. This includes our gradually improving specification of the CR propagation environment within…

High Energy Astrophysical Phenomena · Physics 2015-03-17 Philipp P. Kronberg

Small-scale cosmic ray anisotropy observed by the GRAPES-3 experiment at TeV energies

GRAPES-3 is a mid-altitude (2200 m) and near equatorial ($11.4^{\circ}$ North) air shower array, overlapping in its field of view for cosmic ray observations with experiments that are located in Northern and Southern hemispheres. We analyze…

High Energy Astrophysical Phenomena · Physics 2023-10-25 M. Chakraborty , S. Ahmad , A. Chandra , S. R. Dugad , U. D. Goswami , S. K. Gupta , B. Hariharan , Y. Hayashi , P. Jagadeesan , A. Jain , P. Jain , S. Kawakami , T. Koi , H. Kojima , S. Mahapatra , P. K. Mohanty , R. Moharana , Y. Muraki , P. K. Nayak , T. Nonaka , T. Nakamura , A. Oshima , B. P. Pant , D. Pattanaik , S. Paul , G. S. Pradhan , M. Rameez , K. Ramesh , S. Saha , R. Sahoo , R. Scaria , S. Shibata , T. Tabata , H. Takamaru , K. Tanaka , F. Varsi , K. Yamazaki , M. Zuberi

Direct Measurements of Galactic Cosmic Rays

This paper reviews recent progress in the field of direct measurements of Galactic cosmic rays. High-statistic measurements of cosmic ray energy spectra, chemical and isotopic composition, and the rare antimatter components have been made…

High Energy Astrophysical Phenomena · Physics 2023-02-02 Nicola Tomassetti

Testing the influence of anisotropic CR transport and the Galactic magnetic field structure on the all-sky gamma-ray emission

The spatial diffusion of energetic particles in a magnetic field composed of a large-scale background and a small-scale turbulent component should be expected to be anisotropic. While such anisotropic diffusion has been known for quite a…

High Energy Astrophysical Phenomena · Physics 2025-07-17 Julien Dörner , Jonas Hellrung , Julia Becker Tjus , Horst Fichtner

Observation of Cosmic Ray Anisotropy with Nine Years of IceCube Data

The IceCube Observatory has collected over 577 billion cosmic-ray induced muon events in its final configuration from May 2011 to May 2020. We used this data set to provide an unprecedented statistically accurate map of the cosmic ray…

High Energy Astrophysical Phenomena · Physics 2021-07-27 Frank McNally , Rasha Abbasi , Paolo Desiati , Juan Carlos Díaz Vélez , Timothy Aguado , Katherine Gruchot , Andrew Moy , Alexander Simmons , Andrew Thorpe , Hannah Woodward

Measurement of the cosmic-ray proton spectrum from 40 GeV to 100 TeV with the DAMPE satellite

The precise measurement of the spectrum of protons, the most abundant component of the cosmic radiation, is necessary to understand the source and acceleration of cosmic rays in the Milky Way. This work reports the measurement of the cosmic…

High Energy Astrophysical Phenomena · Physics 2019-10-02 Q. An , R. Asfandiyarov , P. Azzarello , P. Bernardini , X. J. Bi , M. S. Cai , J. Chang , D. Y. Chen , H. F. Chen , J. L. Chen , W. Chen , M. Y. Cui , T. S. Cui , H. T. Dai , A. D'Amone , A. De Benedittis , I. De Mitri , M. Di Santo , M. Ding , T. K. Dong , Y. F. Dong , Z. X. Dong , G. Donvito , D. Droz , J. L. Duan , K. K. Duan , D. D'Urso , R. R. Fan , Y. Z. Fan , F. Fang , C. Q. Feng , L. Feng , P. Fusco , V. Gallo , F. J. Gan , M. Gao , F. Gargano , K. Gong , Y. Z. Gong , D. Y. Guo , J. H. Guo , X. L. Guo , S. X. Han , Y. M. Hu , G. S. Huang , X. Y. Huang , Y. Y. Huang , M. Ionica , W. Jiang , X. Jin , J. Kong , S. J. Lei , S. Li , W. L. Li , X. Li , X. Q. Li , Y. Li , Y. F. Liang , Y. M. Liang , N. H. Liao , C. M. Liu , H. Liu , J. Liu , S. B. Liu , W. Q. Liu , Y. Liu , F. Loparco , C. N. Luo , M. Ma , P. X. Ma , S. Y. Ma , T. Ma , X. Y. Ma , G. Marsella , M. N. Mazziotta , D. Mo , X. Y. Niu , X. Pan , W. X. Peng , X. Y. Peng , R. Qiao , J. N. Rao , M. M. Salinas , G. Z. Shang , W. H. Shen , Z. Q. Shen , Z. T. Shen , J. X. Song , H. Su , M. Su , Z. Y. Sun , A. Surdo , X. J. Teng , A. Tykhonov , S. Vitillo , C. Wang , H. Wang , H. Y. Wang , J. Z. Wang , L. G. Wang , Q. Wang , S. Wang , X. H. Wang , X. L. Wang , Y. F. Wang , Y. P. Wang , Y. Z. Wang , Z. M. Wang , D. M. Wei , J. J. Wei , Y. F. Wei , S. C. Wen , D. Wu , J. Wu , L. B. Wu , S. S. Wu , X. Wu , K. Xi , Z. Q. Xia , H. T. Xu , Z. H. Xu , Z. L. Xu , Z. Z. Xu , G. F. Xue , H. B. Yang , P. Yang , Y. Q. Yang , Z. L. Yang , H. J. Yao , Y. H. Yu , Q. Yuan , C. Yue , J. J. Zang , F. Zhang , J. Y. Zhang , J. Z. Zhang , P. F. Zhang , S. X. Zhang , W. Z. Zhang , Y. Zhang , Y. J. Zhang , Y. L. Zhang , Y. P. Zhang , Y. Q. Zhang , Z. Zhang , Z. Y. Zhang , H. Zhao , H. Y. Zhao , X. F. Zhao , C. Y. Zhou , Y. Zhou , X. Zhu , Y. Zhu , S. Zimmer

A Cosmic-ray Electron Spectrum with VERITAS

Cosmic-ray electrons and positrons (CREs) at GeV-TeV energies are a unique probe of our local Galactic neighbourhood. CREs lose energy rapidly via inverse Compton scattering and synchrotron processes while propagating in the Galaxy,…

High Energy Astrophysical Phenomena · Physics 2019-08-13 David Staszak

Cosmic-Ray Convection-Diffusion Anisotropy

Under nonuniform convection, the distribution of diffusive particles can exhibit dipole and quadrupole anisotropy induced by the fluid inertial and shear force, respectively. These convection-related anisotropies, unlike the Compton-Getting…

High Energy Astrophysical Phenomena · Physics 2022-10-26 Yiran Zhang , Siming Liu , Dejin Wu

Low Energy Cosmic Rays and the Disturbed Magnetosphere

Low energy galactic cosmic rays as well as particles accelerated to high energies either at the solar surface or in the interplanetary medium have access to the atmosphere above a given position on the Earth depending upon the state of the…

Earth and Planetary Astrophysics · Physics 2013-03-19 K. Kudela , R. Bucik

Cosmic Ray Anisotropy with 11 Years of IceCube Data

The IceCube Observatory provides our highest-statistics picture of the cosmic-ray arrival directions in the Southern Hemisphere, with over 700 billion cosmic-ray-induced muon events collected between May 2011 and May 2022. Using the larger…

High Energy Astrophysical Phenomena · Physics 2023-08-07 Frank McNally , Rasha Abbasi , Paolo Desiati , Juan Carlos Díaz Vélez , Christina Cochling , Katherine Gruchot , William Hayes , Andrew Moy , Emily Schmidt , Andrew Thorpe

An observational test for correlations between cosmic rays and magnetic fields

We derive the magnitude of fluctuations in total synchrotron intensity in the Milky Way and M33, from both observations and theory under various assumption about the relation between cosmic rays and interstellar magnetic fields. Given the…

Astrophysics of Galaxies · Physics 2016-01-05 Rodion Stepanov , Anvar Shukurov , Andrew Fletcher , Rainer Beck , Laura La Porta , Fatemeh Tabatabaei

On energy equipartition between cosmic rays and magnetic fields

Interpretations of synchrotron observations often assume a tight correlation between magnetic and cosmic ray energy densities. We examine this assumption using both test-particle simulations of cosmic rays and MHD simulations which include…

Astrophysics of Galaxies · Physics 2018-10-10 Amit Seta , Anvar Shukurov , Paul J. Bushby , Toby S. Wood

Observation of Galactic Cosmic Rays and Gamma Rays with the High Altitude Water Cherenkov Observatory

The High-Altitude Water Cherenkov Observatory, or HAWC, is carrying out an unbiased survey of cosmic rays and gamma rays from the Northern Hemisphere between 100 GeV and 100 TeV. HAWC is currently the only high-uptime wide-field TeV…

High Energy Astrophysical Phenomena · Physics 2019-08-13 Segev BenZvi

Anisotropic diffusion of galactic cosmic ray protons and their steady-state azimuthal distribution

Galactic transport models for cosmic rays involve the diffusive motion of these particles in the interstellar medium. Due to the large-scale structured galactic magnetic field this diffusion is anisotropic with respect to the local field…

High Energy Astrophysical Phenomena · Physics 2013-06-07 Frederic Effenberger , Horst Fichtner , Klaus Scherer , Ingo Büsching

Future plan for observation of cosmic gamma rays in the 100 TeV energy region with the Tibet air shower array : physics goal and overview

The Tibet air shower array, which has an effective area of 37,000 square meters and is located at 4300 m in altitude, has been observing air showers induced by cosmic rays with energies above a few TeV. We are planning to add a large muon…

Astrophysics · Physics 2007-10-16 M. Amenomori , X. J. Bi , D. Chen , S. W. Cui , Danzengluobu , L. K. Ding , X. H. Ding , C. Fan , C. F. Feng , Zhaoyang Feng , Z. Y. Feng , X. Y. Gao , Q. X. Geng , H. W. Guo , H. H. He , M. He , K. Hibino , N. Hotta , Haibing Hu , H. B. Hu , J. Huang , Q. Huang , H. Y. Jia , F. Kajino , K. Kasahara , Y. Katayose , C. Kato , K. Kawata , Labaciren , G. M. Le , A. F. Li , J. Y. Li , Y. -Q. Lou , H. Lu , S. L. Lu , X. R. Meng , K. Mizutani , J. Mu , K. Munakata , A. Nagai , H. Nanjo , M. Nishizawa , M. Ohnishi , I. Ohta , H. Onuma , T. Ouchi , S. Ozawa , J. R. Ren , T. Saito , T. Y. Saito , M. Sakata , T. K. Sako , M. Shibata , A. Shiomi , T. Shirai , H. Sugimoto , M. Takita , Y. H. Tan , N. Tateyama , S. Torii , H. Tsuchiya , S. Udo , B. Wang , H. Wang , X. Wang , Y. Wang , Y. G. Wang , H. R. Wu , L. Xue , Y. Yamamoto , C. T. Yan , X. C. Yang , S. Yasue , Z. H. Ye , G. C. Yu , A. F. Yuan , T. Yuda , H. M. Zhang , J. L. Zhang , N. J. Zhang , X. Y. Zhang , Y. Zhang , Yi Zhang , Zhaxisangzhu , X. X. Zhou