Effective screening due to minihalos during the epoch of reionization

Rennan Barkana; Abraham Loeb

doi:10.1086/342313

Effective screening due to minihalos during the epoch of reionization

Rennan Barkana, Abraham Loeb

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We show that the gaseous halos of collapsed objects introduce a substantial cumulative opacity to ionizing radiation, even after the smoothly distributed hydrogen in the intergalactic medium has been fully reionized. This opacity causes a delay of Δ ≳ 1 in redshift between the time of the overlap of ionized bubbles in the intergalactic medium and the lifting of complete Gunn-Peterson Lyα absorption. The minihalos responsible for this screening effect are not resolved by existing numerical simulations of reionization.

Original language	English
Pages (from-to)	1-11
Number of pages	11
Journal	Astrophysical Journal
Volume	578
Issue number	1 I
DOIs	https://doi.org/10.1086/342313
State	Published - 10 Oct 2002

Keywords

Cosmology: theory
Galaxies: formation
Galaxies: high-redshift

Access to Document

10.1086/342313

Cite this

@article{11d06255dacf49929c822405b56e9837,

title = "Effective screening due to minihalos during the epoch of reionization",

abstract = "We show that the gaseous halos of collapsed objects introduce a substantial cumulative opacity to ionizing radiation, even after the smoothly distributed hydrogen in the intergalactic medium has been fully reionized. This opacity causes a delay of Δ ≳ 1 in redshift between the time of the overlap of ionized bubbles in the intergalactic medium and the lifting of complete Gunn-Peterson Lyα absorption. The minihalos responsible for this screening effect are not resolved by existing numerical simulations of reionization.",

keywords = "Cosmology: theory, Galaxies: formation, Galaxies: high-redshift",

author = "Rennan Barkana and Abraham Loeb",

year = "2002",

month = oct,

day = "10",

doi = "10.1086/342313",

language = "אנגלית",

volume = "578",

pages = "1--11",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "1 I",

}

TY - JOUR

T1 - Effective screening due to minihalos during the epoch of reionization

AU - Barkana, Rennan

AU - Loeb, Abraham

PY - 2002/10/10

Y1 - 2002/10/10

N2 - We show that the gaseous halos of collapsed objects introduce a substantial cumulative opacity to ionizing radiation, even after the smoothly distributed hydrogen in the intergalactic medium has been fully reionized. This opacity causes a delay of Δ ≳ 1 in redshift between the time of the overlap of ionized bubbles in the intergalactic medium and the lifting of complete Gunn-Peterson Lyα absorption. The minihalos responsible for this screening effect are not resolved by existing numerical simulations of reionization.

AB - We show that the gaseous halos of collapsed objects introduce a substantial cumulative opacity to ionizing radiation, even after the smoothly distributed hydrogen in the intergalactic medium has been fully reionized. This opacity causes a delay of Δ ≳ 1 in redshift between the time of the overlap of ionized bubbles in the intergalactic medium and the lifting of complete Gunn-Peterson Lyα absorption. The minihalos responsible for this screening effect are not resolved by existing numerical simulations of reionization.

KW - Cosmology: theory

KW - Galaxies: formation

KW - Galaxies: high-redshift

UR - http://www.scopus.com/inward/record.url?scp=0041830962&partnerID=8YFLogxK

U2 - 10.1086/342313

DO - 10.1086/342313

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:0041830962

VL - 578

SP - 1

EP - 11

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1 I

ER -

Effective screening due to minihalos during the epoch of reionization

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this