Modelling the 21-cm Signal from the Epoch of Reionization and Cosmic Dawn
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Studying the cosmic dawn and the epoch of reionization
through the redshifted 21-cm line are among the major science goals of
the SKA1. Their significance lies in the fact that they are closely related to
the very first stars in the Universe. Interpreting the upcoming data would
require detailed modelling of the relevant physical processes. In this article,
we focus on the theoretical models of reionization that have been
worked out by various groups working in India with the upcoming SKA
in mind. These models include purely analytical and semi-numerical calculations
as well as fully numerical radiative transfer simulations. The
predictions of the 21-cm signal from these models would be useful in
constraining the properties of the early galaxies using the SKA data.
through the redshifted 21-cm line are among the major science goals of
the SKA1. Their significance lies in the fact that they are closely related to
the very first stars in the Universe. Interpreting the upcoming data would
require detailed modelling of the relevant physical processes. In this article,
we focus on the theoretical models of reionization that have been
worked out by various groups working in India with the upcoming SKA
in mind. These models include purely analytical and semi-numerical calculations
as well as fully numerical radiative transfer simulations. The
predictions of the 21-cm signal from these models would be useful in
constraining the properties of the early galaxies using the SKA data.
Date Issued
2016-11-12
Date Acceptance
2016-06-28
Citation
Journal of Astrophysics and Astronomy, 2016, 37 (4)
ISSN
0250-6335
Publisher
Indian Academy of Sciences
Journal / Book Title
Journal of Astrophysics and Astronomy
Volume
37
Issue
4
Copyright Statement
© 2016 Indian Academy of Sciences.
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Intergalactic medium
cosmology: theory
dark ages, reionization, first stars
diffuse radiation
large-scale structure of Universe
methods: numerical
methods: statistical
LY-ALPHA FOREST
21 CM SIGNAL
NEUTRAL HYDROGEN
POWER SPECTRUM
SEMIANALYTIC APPROACH
INTERGALACTIC MEDIUM
PECULIAR VELOCITIES
SPIN TEMPERATURE
SIMULATIONS
UNIVERSE
astro-ph.CO
0201 Astronomical And Space Sciences
Notes
archiveprefix: arXiv keywords: Intergalactic medium, cosmology: theory, dark ages, reionization, first stars, diffuse radiation, large-scale structure of Universe, methods: numerical, methods: statistical. eid: 29 adsurl: http://adsabs.harvard.edu/abs/2016JApA...37...29C adsnote: Provided by the SAO/NASA Astrophysics Data System
Article Number
29