BALLOON-BORNE GAMMA-RAY POLARIMETRY

被引：0
|
作者：
Pearce, Mark [1 ]
机构：
[1] KTH, Dept Phys, S-10691 Stockholm, Sweden
来源：
20TH ESA SYMPOSIUM ON EUROPEAN ROCKET AND BALLOON PROGRAMMES AND RELATED RESEARCH | 2011年 / 700卷
关键词：
scientific balloons; X-rays; gamma-rays; polarisation; HARD X-RAYS; CRAB-NEBULA; POLARIZATION; PULSAR; POGOLITE; EMISSION;
D O I：
暂无
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
The physical processes postulated to explain the high-energy emission mechanisms of compact astrophysical sources often yield polarised soft gamma rays (X-rays). PoGOLite is a balloon-borne polarimeter operating in the 25-80 keV energy band. The polarisation of incident photons is reconstructed using Compton scattering and photoelectric absorption in an array of phoswich detector cells comprising plastic and BGO scintillators, surrounded by a BGO side anticoincidence shield. The polarimeter is aligned to observation targets using a custom attitude control system. The maiden balloon flight is scheduled for summer 2011 from the Esrange Space Centre with the Crab and Cygnus X-1 as the primary observational targets.
引用
收藏
页码：561 / 566
页数：6
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