High-energy neutrino emission from the Milky Way
High Energy Astrophysical Phenomena
2026-07-28 v1 Astrophysics of Galaxies
High Energy Physics - Experiment
Abstract
The Milky Way hosts astrophysical objects that accelerate cosmic rays to energies beyond the reach of terrestrial particle accelerators. It remains a longstanding goal to locate the sites of these powerful Galactic engines and understand how cosmic rays propagate through the Galaxy, leading to the production of high-energy neutrinos. In this paper, we combine event morphologies characteristic of all three neutrino flavours and apply recent improve- ments in ice modelling, calibration and reconstruction to 12 years of IceCube data. With a predefined, global analysis we establish high-energy neutrino emission from the Galactic plane at 5.7 significance. A further study shows that the inner region of the Galaxy is a prominent neutrino source, with 217 shower events with visible energy above 5 TeV com- pared with an expected background of 154.4 4.1. These results herald a new era of Galactic multi-messenger astronomy, creating new opportunities to study cosmic-ray propagation and probe neutrino properties over kiloparsec distances.
Keywords
Cite
@article{arxiv.2607.25966,
title = {High-energy neutrino emission from the Milky Way},
author = {R. Abbasi and M. Ackermann and J. Adams and J. A. Aguilar and M. Ahlers and J. M. Alameddine and S. Ali and N. M. Amin and K. Andeen and C. Arg{ü}elles and S. Athanasiadou and S. N. Axani and R. Babu and X. Bai and A. Balagopal V. and S. W. Barwick and V. Basu and R. Bay and J. J. Beatty and J. Becker Tjus and P. Behrens and J. Beise and C. Bellenghi and S. Benkel and S. BenZvi and D. Berley and E. Bernardini and D. Z. Besson and E. Blaufuss and L. Bloom and S. Blot and F. Bontempo and J. Y. Book Motzkin and C. Boscolo Meneguolo and S. B{ö}ser and O. Botner and J. B{ö}ttcher and J. Braun and B. Brinson and Z. Brisson-Tsavoussis and L. Brusa and R. T. Burley and D. Butterfield and K. Carloni and J. Carpio and N. Chau and Y. C. Chen and Z. Chen and D. Chirkin and S. Choi and A. Chubarov and B. A. Clark and D. A. Coloma Borja and A. Connolly and J. M. Conrad and D. F. Cowen and C. De Clercq and J. J. DeLaunay and D. Delgado and T. Delmeulle and S. Deng and P. Desiati and K. D. de Vries and G. de Wasseige and T. DeYoung and J. C. D{\'ı}az-V{é}lez and S. DiKerby and T. Ding and M. Dittmer and A. Domi and L. Draper and L. Dueser and D. Durnford and K. Dutta and M. A. DuVernois and T. Ehrhardt and L. Eidenschink and A. Eimer and C. Eldridge and P. Eller and E. Ellinger and D. Els{ä}sser and R. Engel and H. Erpenbeck and W. Esmail and S. Eulig and J. Evans and P. A. Evenson and K. L. Fan and K. Fang and K. Farrag and A. Fattorini and A. R. Fazely and A. Fedynitch and N. Feigl and C. Finley and D. Fox and A. Franckowiak and S. Fukami and P. F{ü}rst and J. Gallagher and E. Ganster and A. Garcia and M. Garcia and E. Genton and L. Gerhardt and A. Ghadimi and C. Glaser and T. Gl{ü}senkamp and J. G. Gonzalez and S. Goswami and A. Granados and D. Grant and S. J. Gray and S. Griffin and S. Griswold and K. M. Groth and D. Guevel and C. G{ü}nther and P. Gutjahr and C. Ha and A. Hallgren and L. Halve and F. Halzen and L. Hamacher and M. Handt and K. Hanson and J. Hardin and A. A. Harnisch and P. Hatch and A. Haungs and J. H{ä}ußler and K. Helbing and J. Hellrung and B. Henke and L. Hennig and F. Henningsen and L. Heuermann and R. Hewett and N. Heyer and S. Hickford and A. Hidvegi and C. Hill and G. C. Hill and R. Hmaid and K. D. Hoffman and A. Hollnagel and D. Hooper and S. Hori and K. Hoshina and M. Hostert and W. Hou and M. Hrywniak and T. Huber and K. Hultqvist and K. Hymon and A. Ishihara and W. Iwakiri and M. Jacquart and S. Jain and O. Janik and M. Jansson and M. Jin and N. Kamp and D. Kang and W. Kang and A. Kappes and L. Kardum and T. Karg and A. Karle and A. Katil and M. Kauer and J. L. Kelley and M. Khanal and A. Khatee Zathul and A. Kheirandish and T. Kim and H. Kimku and F. Kirchner and J. Kiryluk and C. Klein and S. R. Klein and Y. Kobayashi and S. Koch and A. Kochocki and R. Koirala and H. Kolanoski and T. Kontrimas and L. K{ö}pke and C. Kopper and D. J. Koskinen and P. Koundal and M. Kowalski and T. Kozynets and A. Kravka and N. Krieger and T. Krishnan and K. Kruiswijk and E. Krupczak and E. Kun and N. Kurahashi and C. Lagunas Gualda and L. Lallement Arnaud and M. J. Larson and F. Lauber and J. P. Lazar and K. Leonard DeHolton and A. Leszczy{ń}ska and C. Li and J. Liao and C. Lin and Q. R. Liu and Y. T. Liu and M. Liubarska and C. Love and L. Lu and F. Lucarelli and W. Luszczak and Y. Lyu and M. Macdonald and E. Magnus and Y. Makino and E. Manao and S. Mancina and A. Mand and I. C. Mari{ş} and S. Marka and Z. Marka and L. Marten and I. Martinez-Soler and R. Maruyama and J. Mauro and F. Mayhew and F. McNally and K. Meagher and A. Medina and M. Meier and Y. Merckx and L. Merten and S. Minji and J. Mitchell and L. Molchany and S. Mondal and T. Montaruli and R. W. Moore and Y. Morii and A. Mosbrugger and D. Mousadi and E. Moyaux and T. Mukherjee and M. Nakos and U. Naumann and R. Neshat and L. Neste and M. Neumann and H. Niederhausen and M. U. Nisa and K. Noda and A. Noell and A. Novikov and A. Obertacke and V. O'Dell and A. Olivas and R. Orsoe and J. Osborn and E. O'Sullivan and B. Owens and V. Palusova and H. Pandya and A. Parenti and C. Parisel and N. Park and V. Parrish and E. N. Paudel and L. Paul and C. P{é}rez de los Heros and T. Pernice and T. C. Petersen and J. Peterson and S. Pick and M. Plum and A. Pont{é}n and V. Poojyam and B. Pries and R. Procter-Murphy and G. T. Przybylski and L. Pyras and C. Raab and J. Rack-Helleis and N. Rad and M. Ravn and K. Rawlins and Z. Rechav and A. Rehman and I. Reistroffer and E. Resconi and C. D. Rho and W. Rhode and L. Ricca and B. Riedel and A. Rifaie and E. J. Roberts and S. Rodan and M. Rongen and A. Rosted and C. Rott and T. Ruhe and L. Ruohan and D. Ryckbosch and J. Saffer and D. Salazar-Gallegos and P. Sampathkumar and A. Sandrock and G. Sanger-Johnson and M. Santander and S. Sarkar and M. Scarnera and M. Schaufel and H. Schieler and S. Schindler and L. Schlickmann and B. Schl{ü}ter and F. Schl{ü}ter and N. Schmeisser and T. Schmidt and F. Schmitt and A. Scholz and F. G. Schr{ö}der and S. Schwirn and S. Sclafani and D. Seckel and L. Seen and M. Seikh and S. Seunarine and P. A. Sevle Myhr and R. Shah and S. Shah and S. Shefali and N. Shimizu and B. Skrzypek and R. Snihur and J. Soedingrekso and D. Soldin and P. Soldin and G. Sommani and D. Song and C. Spannfellner and G. M. Spiczak and C. Spiering and J. Stachurska and M. Stamatikos and T. Stanev and T. Stezelberger and T. St{ü}rwald and T. Stuttard and G. W. Sullivan and I. Taboada and S. Ter-Antonyan and A. Terliuk and A. Thakuri and M. Thiesmeyer and W. G. Thompson and J. Thwaites and W. Tian and S. Tilav and K. Tollefson and J. A. Torres and S. Toscano and D. Tosi and K. Upshaw and A. Vaidyanathan and N. Valtonen-Mattila and J. Valverde and J. Vandenbroucke and T. Van Eeden and N. van Eijndhoven and L. Van Rootselaar and J. van Santen and J. Vara and F. Varsi and M. Velazquez and M. Venugopal and M. Vereecken and S. Vergara Carrasco and S. Verpoest and D. Veske and A. Vijai and J. Villarreal and C. Walck and A. Wang and E. H. S. Warrick and C. Weaver and A. Weindl and J. Weldert and A. Y. Wen and C. Wendt and J. Werthebach and M. Weyrauch and N. Whitehorn and C. H. Wiebusch and D. R. Williams and L. Witthaus and J. Woodward and G. Wrede and X. W. Xu and J. P. Yanez and Y. Yao and E. Yildizci and S. Yoshida and F. Yu and S. Yu and T. Yuan and S. Yun-C{á}rcamo and A. Zander Jurowitzki and A. Zegarelli and S. Zhang and Z. Zhang and P. Zhelnin and P. Zilberman and C. Zilleruelo Ca{ñ}as},
journal= {arXiv preprint arXiv:2607.25966},
year = {2026}
}