IHEP OpenIR
A Study of Background Conditions for Sphinx¡ªThe Satellite-Borne Gamma-Ray Burst Polarimeter
Xie, Fei; Pearce, Mark
2018
Source PublicationGalaxies
Volume6Issue:2Pages:50
Abstract

SPHiNX is a proposed satellite-borne gamma-ray burst polarimeter operating in the energy range 50-500 keV. The mission aims to probe the fundamental mechanism responsible for gamma-ray burst prompt emission through polarisation measurements. Optimising the signal-to-background ratio for SPHiNX is an important task during the design phase. The Geant4 Monte Carlo toolkit is used in this work. From the simulation, the total background outside the South Atlantic Anomaly (SAA) is about 323 counts/s, which is dominated by the cosmic X-ray background and albedo gamma rays, which contribute similar to 60% and similar to 35% of the total background, respectively. The background from albedo neutrons and primary and secondary cosmic rays is negligible. The delayed background induced by the SAA-trapped protons is about 190 counts/s when SPHiNX operates in orbit for one year. The resulting total background level of similar to 513 counts/s allows the polarisation of similar to 50 GRBs with minimum detectable polarisation less than 30% to be determined during the two-year mission lifetime.

Keywordpolarimeter Compton scattering GRB background
DOI10.3390/galaxies6020050
Correlation关注
Research Direction仪器
Member Type非核心团队
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000436552000012
ADS Bibcode2018Galax...6...50X
inspireid1694543
major scientific facilities硬X射线调制望远镜
Citation statistics
Cited Times:2 [INSPIRE]
Cited Times:4 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/282270
Collection中国科学院高能物理研究所
Recommended Citation
GB/T 7714
Xie, Fei,Pearce, Mark. A Study of Background Conditions for Sphinx¡ªThe Satellite-Borne Gamma-Ray Burst Polarimeter[J]. Galaxies,2018,6(2):50.
APA Xie, Fei,&Pearce, Mark.(2018).A Study of Background Conditions for Sphinx¡ªThe Satellite-Borne Gamma-Ray Burst Polarimeter.Galaxies,6(2),50.
MLA Xie, Fei,et al."A Study of Background Conditions for Sphinx¡ªThe Satellite-Borne Gamma-Ray Burst Polarimeter".Galaxies 6.2(2018):50.
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