HAWC 观测站对 IC 443 区域的研究
高能天体物理现象
2025-08-07 v3
摘要
超新星残留物是 PeVatron（即能够加速射电离子至 PeV 能级的天体）的潜在来源类别之一。超新星爆炸后产生的冲击前沿是粒子加速的理想区域。IC 443 是一个在不同波段上被广泛研究过的超新星残留物。利用 HAWC 观测站的 2966 天伽马射线数据，我们研究 IC 443 的辐射，旨在寻找射电离子在 PeV 能级的加速特征。使用最大似然方法，我们发现该区域有一个位于 (=94.42, =22.35) 的点源，我们将其与 IC 443 关联。测量得到的谱为简单功率律，指数为 0.18，与之前的 TeV 观测结果一致。尽管我们无法确认 IC 443 是 hadronic PeVatron，但我们未发现谱在十几 TeV 能级存在截止迹象，谱可延伸至约 30 TeV。此外，我们还发现该区域的一个新扩展成分，其辐射描述为指数为 0.08 的简单功率律，我们将其称为 HAWC J0615+2213。虽然我们表明该新源可能是新的 TeV 星环，但将对该新源进行详细分析留待另一篇论文。
引用
@article{arxiv.2501.12613,
title = {Study of the IC 443 region with the HAWC observatory},
author = {R. Alfaro and C. Alvarez and M. Araya and J. C. Arteaga-Velázquez and D. Avila Rojas and H. A. Ayala Solares and R. Babu and A. Bernal and K. S. Caballero-Mora and T. Capistran and A. Carramiñana and S. Casanova and U. Cotti and J. Cotzomi and S. Coutiño de León and E. De la Fuente and D. Depaoli and P. Desiati and N. Di Lalla and R. Diaz Hernandez and B. L. Dingus and M. A. DuVernois and J. C. Díaz-Vélez and T. Ergin and C. Espinoza and K. Fang and N. Fraija and S. Fraija and J. A. García-González and H. Goksu and J. A. González-Cervera 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 P. Hüntemeyer and S. Kaufmann and A. Lara 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. U. Nisa and R. Noriega-Papaqui and L. Olivera-Nieto and N. Omodei and M. Osorio and E. Ponce and Y. Pérez Araujo and E. G. Pérez-Pérez and C. D. Rho and D. Rosa-González and M. Roth and E. Ruiz-Velasco and H. Salazar 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 X. Wang and Z. Wang and I. J. Watson and H. Wu and S. Yu and S. Yun-Cárcamo and H. Zhou and C. de León},
journal= {arXiv preprint arXiv:2501.12613},
year = {2025}
}