Low-Resolution Spectrum of the Extragalactic Background Light with the AKARI InfraRed Camera
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<jats:title>Abstract</jats:title> <jats:p>The Extragalactic Background Light (EBL) as integrated light from outside of our Galaxy includes information about the early universe and the Dark Ages. We analyzed spectral data of the astrophysical diffuse emission obtained with the low-resolution spectroscopy mode on the AKARI Infra-Red Camera (IRC) in the $1.8-5.3 \mu \textrm m $ wavelength region. Although previous EBL observations in this wavelength region were restricted to observations by DIRBE and IRTS, this study adds a new independent result with negligible contamination of Galactic stars owing to higher sensitivity for point sources. Two other major foreground components, zodiacal light (ZL) and diffuse Galactic light (DGL), were subtracted by taking correlations with ZL brightness estimated by the DIRBE ZL model and with the $100 \mu \textrm m $ dust thermal emission, respectively. The isotropic emission was obtained as EBL, which shows significant excess over integrated light of galaxies at $ \lt 4 \mu \textrm m $. The obtained EBL is consistent with the previous measurements by IRTS and DIRBE.</jats:p>
収録刊行物
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- Publications of the Astronomical Society of Japan
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Publications of the Astronomical Society of Japan 65 (6), 121-, 2013
Tokyo : Astronomical Society of Japan
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詳細情報 詳細情報について
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- CRID
- 1523669555481187712
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- NII論文ID
- 40020043348
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- NII書誌ID
- AA1082896X
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- ISSN
- 00046264
- 2053051X
- http://id.crossref.org/issn/00046264
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- NDL書誌ID
- 025408251
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- 本文言語コード
- en
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- NDL 雑誌分類
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- ZM33(科学技術--宇宙科学)
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- データソース種別
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- NDL
- Crossref
- CiNii Articles
- KAKEN
