Cosmic X-Ray background and Earth albedo spectra with swift bat

M. Ajello; J. Greiner; G. Sato; D. R. Willis; G. Kanbach; A. W. Strong; R. Diehl; G. Hasinger; N. Gehrels; C. B. Markwardt; J. Tueller

doi:10.1086/592595

Cosmic X-Ray background and Earth albedo spectra with swift bat

M. Ajello^*, J. Greiner, G. Sato, D. R. Willis, G. Kanbach, A. W. Strong, R. Diehl, G. Hasinger, N. Gehrels, C. B. Markwardt, J. Tueller

^*この研究の対応する著者

理工学術院総合研究所

研究成果: Article › 査読

163 被引用数 (Scopus)

抄録

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 ̃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.

本文言語	English
ページ（範囲）	666-677
ページ数	12
ジャーナル	Astrophysical Journal
巻	689
号	2
DOI	https://doi.org/10.1086/592595
出版ステータス	Published - 2008 12月 20

ASJC Scopus subject areas

宇宙惑星科学
天文学と天体物理学

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10.1086/592595

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title = "Cosmic X-Ray background and Earth albedo spectra with swift bat",

abstract = "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{\~ }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.",

keywords = "Cosmology: observations, Diffuse radiation, Earth, Galaxies: active, X-rays: diffuse background",

author = "M. Ajello and J. Greiner and G. Sato and Willis, {D. R.} and G. Kanbach and Strong, {A. W.} and R. Diehl and G. Hasinger and N. Gehrels and Markwardt, {C. B.} and J. Tueller",

year = "2008",

month = dec,

day = "20",

doi = "10.1086/592595",

language = "English",

volume = "689",

pages = "666--677",

journal = "Astrophysical Journal",

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T1 - Cosmic X-Ray background and Earth albedo spectra with swift bat

AU - Ajello, M.

AU - Greiner, J.

AU - Sato, G.

AU - Willis, D. R.

AU - Kanbach, G.

AU - Strong, A. W.

AU - Diehl, R.

AU - Hasinger, G.

AU - Gehrels, N.

AU - Markwardt, C. B.

AU - Tueller, J.

PY - 2008/12/20

Y1 - 2008/12/20

N2 - 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 ̃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.

AB - 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 ̃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.

KW - Cosmology: observations

KW - Diffuse radiation

KW - Earth

KW - Galaxies: active

KW - X-rays: diffuse background

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U2 - 10.1086/592595

DO - 10.1086/592595

M3 - Article

AN - SCOPUS:58149107514

SN - 0004-637X

VL - 689

SP - 666

EP - 677

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

Cosmic X-Ray background and Earth albedo spectra with swift bat

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