Evidence of 200 TeV Photons from HAWC J1825-134

  title={Evidence of 200 TeV Photons from HAWC J1825-134},
  author={Andreas Albert and R. Alfaro and C. {\'A}lvarez and J. R. Angeles Camacho and Juan Carlos Arteaga-Vel{\'a}zquez and K. P. Arunbabu and D. Avila Rojas and H. A. Ayala Solares and Vardan Baghmanyan and E. Belmont-Moreno and Segev Y. BenZvi and C. Brisbois and T. Capistr{\'a}n and A. Carrami{\~n}ana and Sabrina Casanova and U. Cotti and J. Cotzomi and E. De la Fuente and Ram{\'o}n D{\'i}az Hern{\'a}ndez and B. L. Dingus and Michael DuVernois and M. Durocher and Juan Carlos D{\'i}az-V{\'e}lez and K. Engel and C. Espinoza and Ke Fang and Henrike Fleischhack and Nissim Fraija and Antonio Galv'an-G'amez and D. Garc{\'i}a and J. A. Garc{\'i}a-Gonz{\'a}lez and F. Garfias and Gwenael Giacinti and M. M. Gonz{\'a}lez and Jordan A. Goodman and James Patrick Harding and B. Hona and D. Huang and Filiberto Hueyotl-Zahuantitla and P. H{\"u}ntemeyer and A. Iriarte and A. Jardin-Blicq and V. Joshi and Gerd J. Kunde and Alejandro Lara and W. H. Lee and H. Le{\'o}n Vargas and J. T. Linnemann and Anna Lia Longinotti and G. Luis-Raya and J. Lundeen and Kelly Malone and V. Marandon and O. Martinez and Jes{\'u}s Alberto Mart{\'i}nez-Castro and J. A. Matthews and Pedro Miranda-Romagnoli and E. Moreno and M. Mostaf{\'a} and A. Nayerhoda and Lukas Nellen and M. Newbold and M. U. Nisa and R. Noriega-Papaqui and Nicola Omodei and Alison Peisker and Y. P'erez Araujo and E. G. P{\'e}rez-P{\'e}rez and Chang D. Rho and Daniel Rosa-Gonz{\'a}lez and Humberto Ibarguen Salazar and Francisco Salesa Greus and A. Sandoval and M. Schneider and F. Serna and R. W. Springer and K. Tollefson and I. Torres and R. Torres-Escobedo and F. Ure{\~n}a-Mena and L. Villase{\~n}or and E. Willox and H. Zhou and C. de Le'on},
  journal={The Astrophysical Journal Letters},
The Earth is bombarded by ultrarelativistic particles, known as cosmic rays (CRs). CRs with energies up to a few PeV (=1015 eV), the knee in the particle spectrum, are believed to have a Galactic origin. One or more factories of PeV CRs, or PeVatrons, must thus be active within our Galaxy. The direct detection of PeV protons from their sources is not possible since they are deflected in the Galactic magnetic fields. Hundred TeV γ-rays from decaying π0, produced when PeV CRs collide with the… 

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