地面伽马射线闪的伽马射线定位
大气与海洋物理
2010-12-13 v1 地球与行星天体物理
摘要
地面伽马射线闪(TGFs)是源自地球大气层的高能光子和电子的极短爆发。我们在此介绍一项基于创新事件选择方法、在20 MeV以上伽马射线能量下进行的TGF定位研究。我们使用了AGILE卫星的硅径迹探测器数据，这些数据首次与AGILE微型量热仪探测到的TGFs相关联。我们探测到8个TGFs，其能量高于20 MeV的伽马射线光子由AGILE伽马射线成像仪定位，在50 MeV能量下的精度为5-10度。值得注意的是，所有与TGF相关的伽马射线均与距离星下点小于400公里的地面产生位置相符。考虑到我们的伽马射线在540公里高度到达AGILE卫星时散射或衰减有限，我们的测量提供了首次从太空对TGFs进行的精确直接定位。
引用
@article{arxiv.1009.5544,
title = {Gamma-Ray Localization of Terrestrial Gamma-Ray Flashes},
author = {M. Marisaldi and A. Argan and A. Trois and A. Giuliani and M. Tavani and C. Labanti and F. Fuschino and A. Bulgarelli and F. Longo and G. Barbiellini and E. Del Monte and E. Moretti and M. Trifoglio and E. Costa and P. Caraveo and P. W. Cattaneo and A. Chen and F. D'Ammando and G. De Paris and G. Di Cocco and G. Di Persio and I. Donnarumma and Y. Evangelista and M. Feroci and A. Ferrari and M. Fiorini and T. Froysland and M. Galli and F. Gianotti and I. Lapshov and F. Lazzarotto and P. Lipari and S. Mereghetti and A. Morselli and L. Pacciani and A. Pellizzoni and F. Perotti and P. Picozza and G. Piano and M. Pilia and M. Prest and G. Pucella and M. Rapisarda and A. Rappoldi and A. Rubini and S. Sabatini and P. Soffitta and E. Striani and E. Vallazza and S. Vercellone and V. Vittorini and A. Zambra and D. Zanello and L. A. Antonelli and S. Colafrancesco and S. Cutini and P. Giommi and F. Lucarelli and C. Pittori and P. Santolamazza and F. Verrecchia and L. Salotti},
journal= {arXiv preprint arXiv:1009.5544},
year = {2010}
}
备注
5 pages, 4 figures, 1 table, available at http://prl.aps.org/abstract/PRL/v105/i12/e128501