来自 HAWC J1825-134 的 200 TeV 光子的证据
高能天体物理现象
2021-03-17 v1
摘要
地球受到超相对论性粒子的轰击，这些粒子被称为宇宙线（CRs）。能量高达几 PeV（=10 eV，即粒子能谱中的膝）的宇宙线被认为具有银河系起源。因此，一个或多个 PeV 宇宙线工厂（即 PeVatron）必然在我们的银河系内活跃。由于银河系磁场会使质子偏转，直接探测来自其源的 PeV 质子是不可能的。当 PeV 宇宙线与周围气体碰撞时产生的衰变 所发出的百 TeV 射线，可提供质子加速至膝能量的决定性证据。在此我们报告高能水切伦科夫（HAWC）天文台发现 射线源 HAWC~J1825-134，其能谱延伸至远超 200 TeV 而无中断或截断。该源被发现与一片巨大分子云重合。周围气体密度高达 700 protons/cm。尽管这一极端加速器的性质仍不清楚，但加速至数 PeV 能量的宇宙线与周围气体碰撞很可能产生了所观测到的辐射。
引用
@article{arxiv.2012.15275,
title = {Evidence of 200 TeV photons from HAWC J1825-134},
author = {A. Albert and R. Alfaro and C. Alvarez and J. R. Angeles Camacho and J. C. Arteaga-Velázquez and K. P. Arunbabu and D. Avila Rojas and H. A. Ayala Solares and V. Baghmanyan and E. Belmont-Moreno and S. Y. BenZvi and C. Brisbois and T. Capistrán and A. Carramiñana and S. Casanova and U. Cotti and J. Cotzomi and E. De la Fuente and R. Diaz Hernandez and B. L. Dingus and M. A. DuVernois and M. Durocher and J. C. Díaz-Vélez and K. Engel and C. Espinoza and K. Fang and H. Fleischhack and N. Fraija and A. Galván-Gámez and D. Garcia and J. A. García-González and F. Garfias and G. Giacinti and M. M. González and J. A. Goodman and J. P. Harding and B. Hona and D. Huang and F. Hueyotl-Zahuantitla and P. Hüntemeyer and A. Iriarte and A. Jardin-Blicq and V. Joshi and G. J. Kunde and A. Lara and W. H. Lee and H. León Vargas and J. T. Linnemann and A. L. Longinotti and G. Luis-Raya and J. Lundeen and K. Malone and V. Marandon and O. Martinez and J. Martínez-Castro and J. A. Matthews and P. Miranda-Romagnoli and E. Moreno and M. Mostafá and A. Nayerhoda and L. Nellen and M. Newbold and M. U. Nisa and R. Noriega-Papaqui and N. Omodei and A. Peisker and Y. Pérez Araujo and E. G. Pérez-Pérez and C. D. Rho and D. Rosa-González and H. Salazar and F. 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. Ureña-Mena and L. Villaseñor and E. Willox and H. Zhou and C. de León},
journal= {arXiv preprint arXiv:2012.15275},
year = {2021}
}
备注
Accepted for publication in ApJL