Inevitable imprints of patchy reionization on the cosmic microwave background anisotropy

被引：16

作者：

Paul, Sourabh ^{[1
]}

Mukherjee, Suvodip ^{[2
,3
,4
]}

Choudhury, Tirthankar Roy ^{[5
]}

机构：

[1] Univ Western Cape, Dept Phys & Astron, ZA-7535 Cape Town, South Africa

[2] Univ Amsterdam, Anton Pannoekoek Inst Astron, Gravitat Astroparticle Phys Amsterdam GRAPPA, Sci Pk 904, NL-1090 GL Amsterdam, Netherlands

[3] Inst Astrophys Paris, 98bis Blvd Arago, F-75014 Paris, France

[4] Sorbonne Univ, Inst Lagrange Paris, 98 Bis Blvd Arago, F-75014 Paris, France

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

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2021年 / 500卷 / 01期

关键词：

cosmic background radiation; cosmology: observations; dark ages; reionization; first stars; 21 CM SIGNAL; POWER SPECTRUM; INHOMOGENEOUS REIONIZATION; FLUCTUATIONS; POLARIZATION; SIMULATION; EPOCH; RECONSTRUCTION; PERTURBATIONS; TEMPERATURE;

D O I：

10.1093/mnras/staa3221

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Reionization of the cosmic neutral hydrogen by the first stars in theUniverse is an inhomogeneous process, which produces spatial fluctuations in free electron density. These fluctuations lead to observable signatures in cosmological probes like the cosmic microwave background (CMB). We explore the effect of the electron density fluctuations on CMB using photon-conserving seminumerical simulations of reionization named SCRIPT. We show that the amplitude of the kinematic Sunyaev-Zeldovich (kSZ) and the B-mode polarization signal depends on the patchiness in the spatial distribution of electrons along with the dependence on mid-point and extent of the reionization history. Motivated by this finding, we provide new scaling relations for the amplitude of kSZ and the B-mode polarization signal which can capture the effects arising from the mean optical depth, width of reionization, and spatial fluctuations in the electron density arising from patchy reionization. We show that the amplitude of the kSZ and the B-mode polarization signal exhibits different dependency on the width of reionization and the patchiness of reionization, and hence a joint study of these CMB probes will be able to break the degeneracy. By combining external data sets from 21-cm measurements, the degeneracy can be further lifted by directly exploring the sizes of the ionized regions.

引用

页码：232 / 246

页数：15

共 95 条

[1]

Abazajian K., 2019, arXiv

[2] Planck 2013 results. XVI. Cosmological parameters [J].

Ade, P. A. R. ;

Aghanim, N. ;

Armitage-Caplan, C. ;

Arnaud, M. ;

Ashdown, M. ;

Atrio-Barandela, F. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bobin, J. ;

Bock, J. J. ;

Bonaldi, A. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Bridges, M. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cappellini, B. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chary, R. -R. ;

Chen, X. ;

Chiang, H. C. ;

Chiang, L. -Y ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. .

ASTRONOMY & ASTROPHYSICS, 2014, 571

[3] Secondary anisotropies of the CMB [J].

Aghanim, Nabila ;

Majumdar, Subhabrata ;

Silk, Joseph .

REPORTS ON PROGRESS IN PHYSICS, 2008, 71 (06)

[4]

Aguirre J., 2018, J COSMOL ASTROPART P, V2

[5]

ALVAREZ MA, 2016, APJ, V824, DOI DOI 10.3847/0004-637X/824/2/118

[6] Unusually large fluctuations in the statistics of galaxy formation at high redshift [J].

Barkana, R ;

Loeb, A .

ASTROPHYSICAL JOURNAL, 2004, 609 (02) :474-481

[7] In the beginning: the first sources of light and the reionization of the universe [J].

Barkana, R ;

Loeb, A .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2001, 349 (02) :126-238

[8] Light-cone anisotropy in 21-cm fluctuations during the epoch of reionization [J].

Barkana, Rennan ;

Loeb, Abraham .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2006, 372 (01) :L43-L47

[9] REIONIZATION ON LARGE SCALES. III. PREDICTIONS FOR LOW-l COSMIC MICROWAVE BACKGROUND POLARIZATION AND HIGH-l KINETIC SUNYAEV-ZEL'DOVICH OBSERVABLES [J].

Battaglia, N. ;

Natarajan, A. ;

Trac, H. ;

Cen, R. ;

Loeb, A. .

ASTROPHYSICAL JOURNAL, 2013, 776 (02)

[10] SPT-3G: A Next-Generation Cosmic Microwave Background Polarization Experiment on the South Pole Telescope [J].

Benson, B. A. ;

Ade, P. A. R. ;

Ahmed, Z. ;

Allen, S. W. ;

Arnold, K. ;

Austermann, J. E. ;

Bender, A. N. ;

Bleem, L. E. ;

Carlstrom, J. E. ;

Chang, C. L. ;

Cho, H. M. ;

Cliche, J. F. ;

Crawford, T. M. ;

Cukierman, A. ;

de Haan, T. ;

Dobbs, M. A. ;

Dutcher, D. ;

Everett, W. ;

Gilbert, A. ;

Halverson, N. W. ;

Hanson, D. ;

Harrington, N. L. ;

Hattori, K. ;

Henning, J. W. ;

Hilton, G. C. ;

Holder, G. P. ;

Holzapfel, W. L. ;

Irwin, K. D. ;

Keisler, R. ;

Knox, L. ;

Kubik, D. ;

Kuo, C. L. ;

Lee, A. T. ;

Leitch, E. M. ;

Li, D. ;

McDonald, M. ;

Meyer, S. S. ;

Montgomery, J. ;

Myers, M. ;

Natoli, T. ;

Nguyen, H. ;

Novosad, V. ;

Padin, S. ;

Pan, Z. ;

Pearson, J. ;

Reichardt, C. L. ;

Ruhl, J. E. ;

Saliwanchik, B. R. ;

Simard, G. ;

Smecher, G. .

MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY VII, 2014, 9153

← 1 2 3 4 5 6 7 8 9 10 →