| Item type |
会議発表論文 / Conference Paper(1) |
| 公開日 |
2018-05-01 |
| タイトル |
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タイトル |
SPICA as a Probe of Cosmic Reionization |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_5794 |
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資源タイプ |
conference paper |
| 著者 |
Zackrisson, Erik
井上, 昭雄
Zackrisson, Erik
Inoue, Akio K.
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| 著者所属 |
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Stockholm University |
| 著者所属 |
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大阪産業大学 |
| 著者所属（英） |
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en |
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Stockholm University |
| 著者所属（英） |
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en |
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Osaka Sangyo University |
| 出版者 |
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出版者 |
宇宙航空研究開発機構(JAXA) |
| 出版者（英） |
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出版者 |
Japan Aerospace Exploration Agency (JAXA) |
| 書誌情報 |
宇宙航空研究開発機構特別資料
en : JAXA Special Publication: Proceedings of the SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe
巻 JAXA-SP-17-010E,
p. 83-85,
発行日 2018-03-09
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| 会議概要（会議名, 開催地, 会期, 主催者等）（英） |
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内容記述タイプ |
Other |
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内容記述 |
SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe (June 18-21, 2013. Ito Hall, the University of Tokyo), Bunkyou-ku, Tokyo, Japan |
| 抄録（英） |
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内容記述タイプ |
Other |
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内容記述 |
Current data indicate that the reionization of the Universe was complete by redshift z approx. 6-7, and while the sources responsible for this process have yet to be identified, star-forming galaxies are often considered the most likely candidates. However, the contribution from z greater than 6 galaxies to cosmic reionization critically depends on the fraction of ionizing (Lyman continuum, LyC) photons escaping from these objects and into the intergalactic medium. At z less than or equal to 4, the escaping LyC flux can be measured directly, but the opacity of the neutral intergalactic medium precludes such measurements at higher redshifts. In a recent paper, we argue that since the LyC escape fraction regulates the contribution of nebular emission to the rest-frame optical/UV spectra of galaxies, the James Webb Space Telescope should be able to indirectly assess the LyC escape fraction for galaxies at z approx. 6-9. JWST can, on the other hand, not constrain the fraction of LyC photons directly absorbed by dust, and this is where SPICA comes in. The dust continuum emission from gravitationally lensed LyC-leakers at z approx. 6 may in principle be detectable with SPICA, thereby constraining the level of LyC extinction in these objects. |
| 内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
形態: カラー図版あり |
| 内容記述（英） |
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内容記述タイプ |
Other |
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内容記述 |
Physical characteristics: Original contains color illustrations |
| ISSNONLINE |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2433-2232 |
| 資料番号 |
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内容記述タイプ |
Other |
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内容記述 |
資料番号: AA1730027017 |
| レポート番号 |
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内容記述タイプ |
Other |
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内容記述 |
レポート番号: JAXA-SP-17-010E |
AA1730027017.pdf (498.2 kB)
