HAWC 天文台对伽马射线暴的灵敏度研究
高能天体物理现象
2012-04-26 v2
摘要
我们展示了 HAWC（高空水切伦科夫天文台）对伽马射线暴（GRBs）的灵敏度。HAWC 是一个正在墨西哥海拔 4100 米处建造的甚高能伽马射线天文台，它将通过水切伦科夫方法观测大气空气簇射。HAWC 将由 300 个大型水箱组成，每个水箱配备 4 个光电倍增管。HAWC 拥有两套数据采集（DAQ）系统。主 DAQ 系统读出水箱中的符合信号，并重建单个大气簇射的方向和能量。定标器 DAQ 则对探测器中每个光电倍增管（PMT）的击中次数进行计数，并搜索所有 PMT 噪声之上的统计超出。我们表明，HAWC 拥有切实的机会观测到伽马射线暴中至少延伸至 30 GeV 的高能幂律成分，正如 Fermi LAT 所观测到的那样。这两套 DAQ 系统的能量阈值足够低，可以观测到类似于 GRB 090510 和 GRB 090902b 且具有 Fermi LAT 所观测特征的事件。HAWC 将提供关于伽马射线暴高能谱的信息，这反过来有助于理解伽马射线暴喷流中的电子对衰减、河外背景光吸收，以及确定伽马射线暴加速粒子的最高能量。
引用
@article{arxiv.1108.6034,
title = {On the sensitivity of the HAWC observatory to gamma-ray bursts},
author = {HAWC collaboration and A. U. Abeysekara and J. A. Aguilar and S. Aguilar and R. Alfaro and E. Almaraz and C. Álvarez and J. de D. Álvarez-Romero and M. Álvarez and R. Arceo and J. C. Arteaga-Velázquez and C. Badillo and A. Barber and B. M. Baughman and N. Bautista-Elivar and E. Belmont and E. Benítez and S. Y. BenZvi and D. Berley and A. Bernal and E. Bonamente and J. Braun and R. Caballero-Lopez and I. Cabrera and A. Carramiñana and L. Carrasco and M. Castillo and L. Chambers and R. Conde and P. Condreay and U. Cotti and J. Cotzomi and J. C. D'Olivo and E. de la Fuente and C. De León and S. Delay and D. Delepine and T. DeYoung and L. Diaz and L. Diaz-Cruz and B. L. Dingus and M. A. Duvernois and D. Edmunds and R. W. Ellsworth and B. Fick and D. W. Fiorino and A. Flandes and N. I. Fraija and A. Galindo and J. L. García-Luna and G. García-Torales and F. Garfias and L. X. González and M. M. González and J. A. Goodman and V. Grabski and M. Gussert and C. Guzmán-Ceron and Z. Hampel-Arias and T. Harris and E. Hays and L. Hernandez-Cervantes and P. H. Hüntemeyer and A. Imran and A. Iriarte and J. J. Jimenez and P. Karn and N. Kelley-Hoskins and D. Kieda and R. Langarica and A. Lara and R. Lauer and W. H. Lee and E. C. Linares and J. T. Linnemann and M. Longo and R. Luna-García and H. Martínez and J. Martínez and L. A. Martínez and O. Martínez and J. Martínez-Castro and M. Martos and J. Matthews and J. E. McEnery and G. Medina-Tanco and J. E. Mendoza-Torres and P. A. Miranda-Romagnoli and T. Montaruli and E. Moreno and M. Mostafa and M. Napsuciale and J. Nava and L. Nellen and M. Newbold and R. Noriega-Papaqui and T. Oceguera-Becerra and A. Olmos Tapia and V. Orozco and V. Pérez and E. G. Pérez-Pérez and J. S. Perkins and J. Pretz and C. Ramirez and I. Ramírez and D. Rebello and A. Rentería and J. Reyes and D. Rosa-González and A. Rosado and J. M. Ryan and J. R. Sacahui and H. Salazar and F. Salesa and A. Sandoval and E. Santos and M. Schneider and A. Shoup and S. Silich and G. Sinnis and A. J. Smith and K. Sparks and W. Springer and F. Suárez and N. Suarez and I. Taboada and A. F. Tellez and G. Tenorio-Tagle and A. Tepe and P. A. Toale and K. Tollefson and I. Torres and T. N. Ukwatta and J. Valdes-Galicia and P. Vanegas and V. Vasileiou and O. Vázquez and X. Vázquez and L. Villaseñor and W. Wall and J. S. Walters and D. Warner and S. Westerhoff and I. G. Wisher and J. Wood and G. B. Yodh and D. Zaborov and A. Zepeda},
journal= {arXiv preprint arXiv:1108.6034},
year = {2012}
}