Intensity mapping of post-reionization 21-cm signal and its cross-correlations as a probe of f(R) gravity

被引：4

作者：

Dash, Chandrachud B. V. ^{[1
]}

Sarkar, Tapomoy Guha ^{[1
]}

Sarkar, Anjan Kumar ^{[2
,3
]}

机构：

[1] Birla Inst Technol & Sci, Dept Phys, Pilani, India

[2] Raman Res Inst, Bangalore 560080, India

[3] Tata Inst Fundamental Res, Natl Ctr Radio Astrophys, Pune 411007, India

来源：

JOURNAL OF ASTROPHYSICS AND ASTRONOMY | 2023年 / 44卷 / 01期

关键词：

Cosmology:f(R)gravity; galaxy weak lensing; 21-cm signal; Lyman-a forest; DAMPED LYMAN-ALPHA; WEAK-LENSING SURVEYS; HI FLUCTUATIONS; LARGE REDSHIFTS; POWER SPECTRUM; COSMOLOGICAL PARAMETERS; MODEL PREDICTIONS; WMAP OBSERVATIONS; EVOLUTION; MATTER;

D O I：

10.1007/s12036-022-09885-w

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We propose the intensity mapping of the redshifted Hi 21-cm signal from the post-reionization epoch as a cosmological probe of f (R) gravity. We consider the Hu-Sawicki family of f (R) gravity models characterized by a single parameter f,R0. The f (R) modification to gravity affects the post-reionization 21-cm power spectrum through the change in the growth rate of density fluctuations. We find that a radio interferometric observation with a SKA1-mid-like radio telescope in both auto-correlation and cross-correlation with galaxy weak-lensing and Lyman-alpha forest may distinguish f (R) models from ACDM cosmology at a precision, which is competitive with other probes of f (R) gravity.

引用

页数：16

共 35 条

[21] Probing Quintessence using BAO imprint on the cross-correlation of weak lensing and post-reionization HI 21 cm signal
Dash, Chandrachud B., V
Sarkar, Tapomoy Guha
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 516 (03) : 4156 - 4163
[22] Contribution of cross-correlations to the 21-cm angular power spectrum in the epoch of re-ionization
Zheng, Qian
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 403 (01) : 317 - 323
[23] Contribution of cross-correlations to the 21-cm angular power spectrum in the epoch of re-ionization
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
不详
Mon. Not. R. Astron. Soc., 1 (317-323):
[24] An analytical method to simulate the HI 21-cm visibility signal for intensity mapping experiments
Sarkar, Anjan Kumar
Bharadwaj, Somnath
Marthi, Visweshwar Ram
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2018, 473 (01) : 261 - 270
[25] On using large scale correlation of the Ly-α forest and redshifted 21-cm signal to probe HI distribution during the post reionization era
Sarkar, Tapomoy Guha
Datta, Kanan K.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2015, (08):
[26] Cross-correlation between the 21-cm signal and [O III] emitters during early cosmic reionization
Moriwaki, Kana
Yoshida, Naoki
Eide, Marius B.
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[27] Cross-correlation of the H I 21-cm signal and Lyα forest: a probe of cosmology
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Bharadwaj, Somnath
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MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 410 (02) : 1130 - 1134
[28] The cross-correlation of redshited 21-cm signal and Lyman-α forest: A cosmological probe
Sarkar, T. Guha
Bharadwaj, S.
VISHWA MIMANSA: AN INTERPRETATIVE EXPOSITION OF THE UNIVERSE. PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON GRAVITATION AND COSMOLOGY, 2014, 484
[29] Detectability of 21-cm signal during the epoch of reionization with 21-cm-Lyman-α emitter cross-correlation - III. Model dependence
Kubota, Kenji
Inoue, Akio K.
Hasegawa, Kenji
Takahashi, Keitaro
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 494 (03) : 3131 - 3140
[30] Forecasts and Statistical Insights for Line Intensity Mapping Cross-correlations: A Case Study with 21 cm x [C <sc>ii</sc>]
Fronenberg, Hannah
Liu, Adrian
ASTROPHYSICAL JOURNAL, 2024, 975 (02):

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