Background rejection method for tens of TeV gamma-ray astronomy applicable to wide angle timing arrays

International Conference on Particle Physics and Astrophysics

物理学;天文学

Elshoukrofy, A.Sh M.^1,2 ; Postnikov, E.B.^1 ; Sveshnikova, L.G.^1

Lomonosov Moscow State University Skobeltsyn Institute of Nuclear Physics (MSU SINP), Leninskie gory 1(2), GSP-1, Moscow

119991, Russia^1

Faculty of Science, Damanhour University, El-Gomhouria St. 22516, Damanhour, El Beheria, Egypt^2

关键词: Background rejection;    Cherenkov light;    Gamma-ray astronomy;    Lateral distributions;    Multivariable approach;    Wide angle;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/798/1/012184/pdf
DOI  :  10.1088/1742-6596/798/1/012184

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

A 'knee-like' approximation of Cherenkov light Lateral Distribution Functions, which we developed earlier, now is used for the actual tasks of background rejection methods for high energy (tens and hundreds of TeV) gamma-ray astronomy. In this work we implement this technique to the HiSCORE wide angle timing array consisting of Cherenkov light detectors with spacing of 100 m covering 0.2 km2presently and up to 5 km2in future. However, it can be applied to other similar arrays. We also show that the application of a multivariable approach (where 3 parameters of the knee-like approximation are used) allows us to reach a high level of background rejection, but it strongly depends on the number of hit detectors.