ScienceGuardians

ScienceGuardians

Did You Know?

ScienceGuardians provides a fair ground for all

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

Authors: 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,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,K. Gruchot,D. Guevel,C. Günther,P. Gutjahr,C. Ha,C. Haack,A. Hallgren,L. Halve,F. Halzen,L. Hamacher,H. Hamdaoui,A. Hardy,W. Hayes,M. Ha Minh,M. Handt,K. Hanson,J. Hardin,A. A. Harnisch,P. Hatch,A. Haungs,J. Häussler,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,H. Woodward,M. Wolf,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,Unknown Author
Journal: The Astrophysical Journal
Publisher: American Astronomical Society
Publish date: 2025-3-7
ISSN: 0004-637X DOI: 10.3847/1538-4357/adb1de
View on Publisher's Website
Up
0
Down
::

You estimate primary energy using N_channel​ and zenith angle, but this is highly degenerate: a high-energy iron nucleus and a lower-energy proton can produce similar muon bundles. Since composition changes with energy, how do you rule out that the observed “anisotropy change” at 100–300 TeV is not simply a composition-driven selection effect rather than a true astrophysical shift?

Your method is insensitive to m=0 spherical harmonics (north-south asymmetry). If the true full-sky anisotropy contains significant power in these modes, your angular power spectra and dipole fits are fundamentally biased. How can you claim a complete picture of the anisotropy’s energy evolution without constraining these missing components?

  • You must be logged in to reply to this topic.