Extracting gravitational waves induced by plasma turbulence in the early Universe through an averaging process

被引：0

作者：

Garrison, David ^{[1
]}

Ramirez, Christopher ^{[1
]}

机构：

[1] Univ Houston Clear Lake, Phys Dept, Houston, TX 77058 USA

来源：

CLASSICAL AND QUANTUM GRAVITY | 2017年 / 34卷 / 14期

关键词：

cosmology; numerical relativity; gravitational waves; relativistic MHD;

D O I：

10.1088/1361-6382/aa7866

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This work is a follow-up to the paper, 'Numerical relativity as a tool for studying the early Universe'. In this article, we determine if cosmological gravitational waves can be accurately extracted from a dynamical spacetime using an averaging process as opposed to conventional methods of gravitational wave extraction using a complex Weyl scalar. We calculate the normalized energy density, strain and degree of polarization of gravitational waves produced by a simulated turbulent plasma similar to what was believed to have existed shortly after the electroweak scale. This calculation is completed using two numerical codes, one which utilizes full general relativity calculations based on modified BSSN equations while the other utilizes a linearized approximation of general relativity. Our results show that the spectrum of gravitational waves calculated from the nonlinear code using an averaging process is nearly indistinguishable from those calculated from the linear code. This result validates the use of the averaging process for gravitational wave extraction of cosmological systems.

引用

页数：11

共 25 条

[1] Planck 2015 results XX. Constraints on inflation
Ade, P. A. R.
Aghanim, N.
Arnaud, M.
Arroja, F.
Ashdown, M.
Aumont, J.
Baccigalupi, C.
Ballardini, M.
Banday, A. J.
Barreiro, R. B.
Bartolo, N.
Battaner, E.
Benabed, K.
Benoit, A.
Benoit-Levy, A.
Bernard, J. -P.
Bersanelli, M.
Bielewicz, P.
Bock, J. J.
Bonaldi, A.
Bonavera, L.
Bondi, J. R.
Borrillu, J.
Bouchet, F. R.
Boulanger, F.
Bucher, M.
Burigana, C.
Butler, R. C.
Calabrese, E.
Cardoso, J. -F.
Catalano, A.
Challinor, A.
Chamballu, A.
Chary, R. -R.
Chiang, H. C.
Christensen, P. R.
Churchl, S.
Clements, D. L.
Colombi, S.
Colombo, L. P. L.
Combet, C.
Contreras, D.
Couchot, F.
Coulais, A.
Crill, B. P.
Curto, A.
Cuttaia, F.
Danese, L.
Davies, R. D.
Davis, R. J.
[J]. ASTRONOMY & ASTROPHYSICS, 2016, 594
[2] Joint Analysis of BICEP2/Keck Array and Planck Data
Ade, P. A. R.
Aghanim, N.
Ahmed, Z.
Aikin, R. W.
Alexander, K. D.
Arnaud, M.
Aumont, J.
Baccigalupi, C.
Banday, A. J.
Barkats, D.
Barreiro, R. B.
Bartlett, J. G.
Bartolo, N.
Battaner, E.
Benabed, K.
Benoit, A.
Benoit-Levy, A.
Benton, S. J.
Bernard, J. -P.
Bersanelli, M.
Bielewicz, P.
Bischoff, C. A.
Bock, J. J.
Bonaldi, A.
Bonavera, L.
Bond, J. R.
Borrill, J.
Bouchet, F. R.
Boulanger, F.
Brevik, J. A.
Bucher, M.
Buder, I.
Bullock, E.
Burigana, C.
Butler, R. C.
Buza, V.
Calabrese, E.
Cardoso, J. -F.
Catalano, A.
Challinor, A.
Chary, R. -R.
Chiang, H. C.
Christensen, P. R.
Colombo, L. P. L.
Combet, C.
Connors, J.
Couchot, F.
Coulais, A.
Crill, B. P.
Curto, A.
[J]. PHYSICAL REVIEW LETTERS, 2015, 114 (10) : 1 - 17
[3] Planck 2013 results. XXII. Constraints on inflation
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.
Bartolo, N.
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.
Cardoso, J. -F.
Catalano, A.
Challinor, A.
Chamballu, A.
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.
Davis, R. J.
de Bernardis, P.
[J]. ASTRONOMY & ASTROPHYSICS, 2014, 571
[4] Detection of B-Mode Polarization at Degree Angular Scales by BICEP2
Ade, P. A. R.
Aikin, R. W.
Barkats, D.
Benton, S. J.
Bischoff, C. A.
Bock, J. J.
Brevik, J. A.
Buder, I.
Bullock, E.
Dowell, C. D.
Duband, L.
Filippini, J. P.
Fliescher, S.
Golwala, S. R.
Halpern, M.
Hasselfield, M.
Hildebrandt, S. R.
Hilton, G. C.
Hristov, V. V.
Irwin, K. D.
Karkare, K. S.
Kaufman, J. P.
Keating, B. G.
Kernasovskiy, S. A.
Kovac, J. M.
Kuo, C. L.
Leitch, E. M.
Lueker, M.
Mason, P.
Netterfield, C. B.
Nguyen, H. T.
O'Brient, R.
Ogburn, R. W.
Orlando, A.
Pryke, C.
Reintsema, C. D.
Richter, S.
Schwarz, R.
Sheehy, C. D.
Staniszewski, Z. K.
Sudiwala, R. V.
Teply, G. P.
Tolan, J. E.
Turner, A. D.
Vieregg, A. G.
Wong, C. L.
Yoon, K. W.
[J]. PHYSICAL REVIEW LETTERS, 2014, 112 (24)
[5] Numerical simulations with a first-order BSSN formulation of Einstein's field equations
Brown, J. David
Diener, Peter
Field, Scott E.
Hesthaven, Jan S.
Herrmann, Frank
Mroue, Abdul H.
Sarbach, Olivier
Schnetter, Erik
Tiglio, Manuel
Wagman, Michael
[J]. PHYSICAL REVIEW D, 2012, 85 (08):
[6] Excitation of magnetohydrodynamic modes with gravitational waves: A testbed for numerical codes
Duez, MD
Liu, YT
Shapiro, SL
Stephens, BC
[J]. PHYSICAL REVIEW D, 2005, 72 (02): : 1 - 10
[7] Relativistic magnetohydrodynamics in dynamical spacetimes: Numerical methods and tests
Duez, MD
Liu, YT
Shapiro, SL
Stephens, BC
[J]. PHYSICAL REVIEW D, 2005, 72 (02): : 1 - 21
[8] Cosmological magnetic fields: their generation, evolution and observation
Durrer, Ruth
Neronov, Andrii
[J]. ASTRONOMY AND ASTROPHYSICS REVIEW, 2013, 21
[9] Inhomogeneity effects in cosmology
Ellis, George F. R.
[J]. CLASSICAL AND QUANTUM GRAVITY, 2011, 28 (16)
[10] Spectrum of gravitational radiation from primordial turbulence
Gogoberidze, Grigol
Kahniashvili, Tina
Kosowsky, Arthur
[J]. PHYSICAL REVIEW D, 2007, 76 (08)

← 1 2 3 →