COSMIC X-RAY BACKGROUND AND EARTH ALBEDO SPECTRA WITH SWIFT BAT

被引：187

作者：

Ajello, M. ^{[1
]}

Greiner, J. ^{[1
]}

Sato, G. ^{[2
]}

Willis, D. R. ^{[1
]}

Kanbach, G. ^{[1
]}

Strong, A. W. ^{[1
]}

Diehl, R. ^{[1
]}

Hasinger, G. ^{[1
]}

Gehrels, N. ^{[2
]}

Markwardt, C. B. ^{[2
]}

Tueller, J. ^{[2
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

[2] NASA, Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA

来源：

ASTROPHYSICAL JOURNAL | 2008年 / 689卷 / 02期

关键词：

cosmology observations; diffuse radiation; Earth; galaxies: active; X-rays: diffuse background;

D O I：

10.1086/592595

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use Swift BAT Earth occultation data at different geomagnetic latitudes to derive a sensitive measurement of the cosmic X-ray background (CXB) and of the Earth albedo emission in the 15-200 keV band. We compare our CXB spectrum with recent (INTEGRAL, BeppoSAX) and past results (HEAO-1) and find good agreement. Using an independent measurement of the CXB spectrum we are able to confirm our results. This study shows that the BAT CXB spectrum has a normalization similar to 8% +/- 3% larger than the HEAO-1 measurement. The BAT accurate Earth albedo spectrum can be used to predict the level of photon background for satellites in low Earth and mid inclination orbits.

引用

页码：666 / 677

页数：12

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