The radiation environment in a low earth orbit: the case of BeppoSAX

被引：13

作者：

Campana, Riccardo ^{[1
]}

Orlandini, Mauro ^{[1
]}

Del Monte, Ettore ^{[2
]}

Feroci, Marco ^{[2
]}

Frontera, Filippo ^{[1
,3
]}

机构：

[1] INAF IASF Bologna, I-40129 Bologna, Italy

[2] INAF IAPS, I-00133 Rome, Italy

[3] Univ Ferrara, Dept Phys & Earth Sci, I-44100 Ferrara, Italy

来源：

EXPERIMENTAL ASTRONOMY | 2014年 / 37卷 / 03期

关键词：

Radiation environment in low earth orbit; Radiation belts; Instrumental background; ENERGY CONCENTRATOR SPECTROMETER; ON-BOARD; RAY; ONBOARD; FIELD;

D O I：

10.1007/s10686-014-9394-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Low-inclination, low altitude Earth orbits (LEO) are of increasing importance for astrophysical satellites, due to their low background environment. Here, the South Atlantic Anomaly (SAA) is the region with the highest amount of radiation. We study the radiation environment in a LEO (500-600 km altitude, 4 degrees inclination) through the particle background measured by the Particle Monitor (PM) experiment onboard the BeppoSAX satellite, between 1996 and 2002. Using time series of particle count rates measured by PM we construct intensity maps and derive SAA passage times and fluences. The low-latitude SAA regions are found to have an intensity strongly decreasing with altitude and dependent on the magnetic rigidity. The SAA extent, westward drift and strength vs altitude is shown.

引用

页码：599 / 613

页数：15

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