Cosmic mysteries and the hydrogen 21-cm line: bridging the gap with lunar observations

被引：3

作者：

Fialkov, A. ^{[1
,2
]}

Gessey-Jones, T. ^{[2
,3
]}

Dhandha, J. ^{[1
,2
]}

机构：

[1] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England

[2] Kavli Inst Cosmol, Madingley Rd, Cambridge CB3 0HA, England

[3] Cavendish Lab, Astrophys Grp, JJ Thomson Ave, Cambridge CB3 0HE, England

来源：

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 2024年 / 382卷 / 2271期

基金：

英国科学技术设施理事会;

关键词：

first stars; nature of dark matter; radio astronomy; APPROXIMATE-TO; 9.1; 21 CM SIGNAL; POWER SPECTRUM; 1ST STARS; BLACK-HOLES; INTERGALACTIC MEDIUM; NEUTRAL HYDROGEN; REIONIZATION; REDSHIFT; EPOCH;

D O I：

10.1098/rsta.2023.0068

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The hydrogen 21-cm signal is predicted to be the richest probe of the young Universe, including those eras known as the cosmic Dark Ages, the Cosmic Dawn (when the first star and black hole formed) and the Epoch of Reionization. This signal holds the key to deciphering processes that take place at the early stages of cosmic history. In this opinion piece, we discuss the potential scientific merit of lunar observations of the 21-cm signal and their advantages over more affordable terrestrial efforts. The Moon is a prime location for radio cosmology which will enable precision observations of the low-frequency radio sky. The uniqueness of such observations is that they will provide an unparalleled opportunity to test cosmology and the nature of dark matter using the Dark Ages 21-cm signal. No less enticing is the opportunity to obtain a much clearer picture of the Cosmic Dawn than that currently achievable from the ground, which will allow us to determine the properties of the first stars and black holes.This article is part of a discussion meeting issue 'Astronomy from the Moon: the next decades (part 2)'.

引用

页数：16

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