Lyα emitters at z=6.5 in the SSA22 field: A large-scale fluctuation of the neutral hydrogen fraction at the end of the reionizaion epoch?

被引：0

作者：

Inoue, A. K. ^{[1
]}

Nakamura, E. ^{[2
]}

Hayashino, T. ^{[2
]}

Horie, M. ^{[2
]}

Kousai, K. ^{[2
]}

Fujii, T. ^{[2
]}

Matsuda, Y. ^{[3
]}

机构：

[1] Osaka Sangyo Univ, Coll Gen Educ, 3-1-1 Nakagaito, Osaka 5748530, Japan

[2] Tohoku Univ, Grad Sch Sci, Res Ctr Neutrino Sci, Aoba Ku, Sendai, Miyagi 980, Japan

[3] Univ Durham, Dept Phys, Durham DH1 3LE, England

来源：

DECIPHERING THE ANCIENT UNIVERSE WITH GAMMA-RAY BURSTS | 2010年 / 1279卷

关键词：

cosmology: observations; galaxies: high-redshift; intergalactic medium; SUBARU DEEP FIELD; REDSHIFT; GALAXY;

D O I：

10.1063/1.3509304

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In a deep image of the SSA22 field taken through a narrowband filter NB912 installed in the Subaru/Suprime-Cam, we have found the number density of the photometric Ly alpha emitter (LAE) candidates with L-Ly alpha > 3 x 10(42) erg s(-1) at z = 6.5 is a factor of 3-7 smaller than that found at the same redshift in the Subaru Deep field (SDF). There is a trend that more luminous LAE candidates are fewer. If we consider a scenario that a larger neutral fraction of intergalactic hydrogen, x(HI), in the SSA22 field obscures a part of Ly alpha emission, x(HI) in the SSA22 field should be about 2 times larger than that in the SDF, which is translated into x(HI) < 0.9 in the SSA22 at z = 6.5.

引用

页码：340 / +

页数：2

共 4 条

[1] Lyα emitters at z=6.5 in the SSA22 field: an area more neutral or void at the end of the re-ionization epoch
Nakamura, E.
Inoue, A. K.
Hayashino, T.
Horie, M.
Kousai, K.
Fujii, T.
Matsuda, Y.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 412 (04) : 2579 - 2586
[2] The end of the reionization epoch probed by Lyα emitters at z=6.5 in the subaru deep field
Kashikawa, Nobunari
Shimasaku, Kazuhiro
Malkan, Matthew A.
Doi, Mamoru
Matsuda, Yuichi
Ouchi, Masami
Taniguchi, Yoshiaki
Ly, Chun
Nagao, Tohru
Iye, Masanori
Motohara, Kentaro
Murayama, Takashi
Murozono, Kouji
Nariai, Kyoji
Ohta, Kouji
Okamura, Sadanori
Sasaki, Toshiyuki
Shioya, Yasuhiro
Umemura, Masayuki
ASTROPHYSICAL JOURNAL, 2006, 648 (01): : 7 - 22
[3] Enhancement of HI absorption associated with the z=3.1 large-scale proto-cluster and characteristic structures with AGNs sculptured over Gpc scale in the SSA22 field
Hayashino, T.
Inoue, A. K.
Kousai, K.
Kashikawa, N.
Mawatari, K.
Matsuda, Y.
Tejos, N.
Prochaska, J. X.
Iwata, I.
Noll, S.
Burgarella, D.
Yamada, T.
Akiyama, M.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2019, 484 (04) : 5868 - 5887
[4] Photometric IGM tomography with Subaru/HSC: the large-scale structure of Ly a emitters and IGM transmission in the COSMOS field at z ∼ 5
Kakiichi, Koki
Hennawi, Joseph F.
Ono, Yoshiaki
Inoue, Akio K.
Ouchi, Masami
Ellis, Richard S.
Meyer, Romain A.
Bosman, Sarah, I
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2023, 523 (02) : 1772 - 1798

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