第四号 HAWC 极高能伽马射线源目录
高能天体物理现象
2026-02-03 v1
摘要
本文呈现基于高空水析落 (High-Altitude Water Cherenkov, HAWC) 观测站第五次数据处理结果的TeV级伽马射线源目录。本次发布受益于改进的事件重建技术以及 nearly 三年多的额外观测。同时引入了系统化的多源拟合框架，使对伽马射线天空的建模更加灵活和准确。该拟合程序模仿HAWC对单个源及区域以及其他伽马射线目录（如4FGL）的手动分析方法。与以往HAWC目录相比，本目录在源形态和光谱参数建模上更为多样化，并对银河型 diffuse TeV 辐射进行稳健的建模。拟合过程使用点状源模板和对称高斯空间模板来建模源形态。辐射光谱采用简单功率律或对数抛物线，以探索能谱分布中的曲率。我们报告85个4σ显著性的源，其中11个源不属于TeVCat目录中的任何源（基于距离关联准则）。距离关联1LHAASO目录结果显示，有22个4HWC源无对应物。此外，仍有12个源在低质量或高质量X射线二元组、ATNF、Fermi脉冲星或SNR目录中无物理对应物。其中5个源在所检索的所有目录中均无对应物，为后续观测提供了机会。
引用
@article{arxiv.2602.00263,
title = {The Fourth HAWC Catalog of Very-High-Energy Gamma-Ray Sources},
author = {R. Alfaro and C. Alvarez and E. Anita-Rangel and M. Araya and J. C. Arteaga-Velazquez and D. Avila Rojas and H. A. Ayala Solares and P. Bangale and E. Belmont-Moreno and A. Bernal and K. S. Caballero-Mora and T. Capistran and A. Carraminana and F. Carreon and S. Casanova and U. Cotti and J. Cotzomi and S. Coutino de Leon and E. De la Fuente and P. Desiati and N. Di Lalla and R. Diaz Hernandez and B. L. Dingus and M. A. DuVernois and J. C. Dıaz-Velez and K. Engel and T. Ergin and C. Espinoza and K. Fang and N. Fraija and S. Fraija and J. A. Garcıa-Gonzalez and F. Garfias and N. Ghosh and M. M. Gonzalez and J. A. Gonzalez and J. A. Goodman and S. Groetsch and D. Guevel and S. Hernandez-Cadena and F. Hueyotl-Zahuantitla and P. Huntemeyer and A. Iriarte and S. Kaufmann and D. Kieda and A. Lara and K. Leavitt and T. Lewis and H. Leon Vargas and J. T. Linnemann and A. L. Longinotti and G. Luis-Raya and O. Martinez and J. Martınez-Castro and H. Martınez-Huerta and J. A. Matthews and P. Miranda-Romagnoli and E. Moreno and M. Mostafa and M. Najafi and A. Nayerhoda and L. Nellen and R. Noriega-Papaqui and N. Omodei and M. Osorio-Archila and E. Ponce and Y. Perez Araujo and E. G. Perez-Perez and Q. Remy and A. Rodriguez Parra and D. Rosa-Gonzalez and M. Roth and H. Salazar and A. Sandoval and J. Serna-Franco and Y. Son and R. W. Springer and O. Tibolla and K. Tollefson and I. Torres and R. Torres-Escobedo and R. Turner and E. Varela and L. Villasenor and I. J. Watson and H. Wu and S. Yu and X. Zhang and H. Zhou and C. de Leon},
journal= {arXiv preprint arXiv:2602.00263},
year = {2026}
}
备注
27 pages, 21 figures, pending submission to The Astrophysical Journal