HAWC观测到银河中心超PeV能量射线源，超过100 TeV
高能天体物理现象
2024-09-06 v2
摘要
我们报告了使用High-Altitude Water Cherenkov(HAWC)探测器收集的七年数据，对银河中心区域观测到的超高能(UHE)伽马射线。HAWC数据最佳描述为一个类点源(HAWC J1746-2856)，其谱线为幂律谱()，其中且 (TeV cms)，谱线范围从6到114 TeV。我们在HAWC数据中未发现显著的谱线截止，直至 TeV。两种已知的类点伽马射线源与HAWC伽马射线超标同时位于空间上：Sgr A(HESS J1745-290)和弧形结构(HESS J1746-285)。我们从测量的HAWC J1746-2856总通量中减去已知点源的通量贡献，以排除其杂散 contamination，显示HAWC观测到的剩余信号仍显著(5)，且谱线延伸至 TeV。我们的结果表明，这些检测到的UHE伽马射线可通过与密集环境气体发生原子核相互作用来解释银河中心处的质子PeV加速子。
引用
@article{arxiv.2407.03682,
title = {Observation of the Galactic Center PeVatron Beyond 100 TeV with HAWC},
author = {A. Albert and R. Alfaro and C. Alvarez and A. Andrés and J. C. Arteaga-Velázquez and D. Avila Rojas and H. A. Ayala Solares and R. Babu and E. Belmont-Moreno and A. Bernal and K. S. Caballero-Mora and T. Capistrán and A. Carramiñana and S. Casanova and U. Cotti and J. Cotzomi and S. Coutiño de León and E. De la Fuente and C. de León and D. Depaoli and N. Di Lalla and N. Di Lalla and R. Diaz Hernandez and B. L. Dingus and M. A. DuVernois and J. C. Díaz-Vélez and K. Engel and T. Ergin and C. Espinoza and K. L. Fan and K. Fang and N. Fraija and S. Fraija and J. A. García-González and F. Garfias and H. Goksu and M. M. González and J. A. Goodman and S. Groetsch and J. P. Harding and S. Hernández-Cadena and I. Herzog and J. Hinton and D. Huang and F. Hueyotl-Zahuantitla and T. B. Humensky and P. Hüntemeyer and A. Iriarte and S. Kaufmann and D. Kieda and A. Lara and W. H. Lee and J. Lee and H. León Vargas and J. T. Linnemann and A. L. Longinotti and G. Luis-Raya and K. Malone and O. Martinez and J. Martínez-Castro and J. A. Matthews and P. Miranda-Romagnoli and J. A. Montes and J. A. Morales-Soto and E. Moreno and M. Mostafá and M. Najafi and L. Nellen and M. Newbold and M. U. Nisa and R. Noriega-Papaqui and L. Olivera-Nieto and N. Omodei and M. Osorio-Archila and Y. Pérez Araujo and E. G. Pérez-Pérez and C. D. Rho and D. Rosa-González and E. Ruiz-Velasco and H. Salazar and D. Salazar-Gallegos and A. Sandoval and M. Schneider and G. Schwefer and J. Serna-Franco and A. J. Smith and Y. Son and R. W. Springer and O. Tibolla and K. Tollefson and I. Torres and R. Torres-Escobedo and R. Turner and F. Ureña-Mena and E. Varela and X. Wang and Z. Wang and I. J. Watson and E. Willox and H. Wu and S. Yu and S. Yun-Cárcamo and H. Zhou},
journal= {arXiv preprint arXiv:2407.03682},
year = {2024}
}