Planck 2013 results. XXV. Searches for cosmic strings and other topological defects

P. A.R. Ade; N. Aghanim; C. Armitage-Caplan; M. Arnaud; M. Ashdown; F. Atrio-Barandela; J. Aumont; C. Baccigalupi; A. J. Banday; R. B. Barreiro; J. G. Bartlett; N. Bartolo; E. Battaner; R. Battye; K. Benabed; A. Benoît; A. Benoit-Lévy; J. P. Bernard; M. Bersanelli; P. Bielewicz; J. Bobin; J. J. Bock; A. Bonaldi; L. Bonavera; J. R. Bond; J. Borrill; F. R. Bouchet; M. Bridges; M. Bucher; C. Burigana; R. C. Butler; J. F. Cardoso; A. Catalano; A. Challinor; A. Chamballu; L. Y. Chiang; H. C. Chiang; P. R. Christensen; S. Church; D. L. Clements; S. Colombi; L. P.L. Colombo; F. Couchot; A. Coulais; B. P. Crill; A. Curto; F. Cuttaia; L. Danese; R. D. Davies; R. J. Davis; P. De Bernardis; A. De Rosa; G. De Zotti; J. Delabrouille; J. M. Delouis; F. X. Désert; J. M. Diego; H. Dole; S. Donzelli; O. Doré; M. Douspis; A. Ducout; J. Dunkley; X. Dupac; G. Efstathiou; T. A. Enßlin; H. K. Eriksen; J. Fergusson; F. Finelli; O. Forni; M. Frailis; E. Franceschi; S. Galeotta; K. Ganga; M. Giard; G. Giardino; Y. Giraud-Héraud; J. González-Nuevo; K. M. Górski; S. Gratton; A. Gregorio; A. Gruppuso; F. K. Hansen; D. Hanson; D. Harrison; S. Henrot-Versillé; C. Hernández-Monteagudo; D. Herranz; S. R. Hildebrandt; E. Hivon; M. Hobson; W. A. Holmes; A. Hornstrup; W. Hovest; K. M. Huffenberger; T. R. Jaffe; A. H. Jaffe; W. C. Jones; M. Juvela; E. Keihänen; R. Keskitalo; T. S. Kisner; J. Knoche; L. Knox; M. Kunz; H. Kurki-Suonio; G. Lagache; A. Lähteenmäki; J. M. Lamarre; A. Lasenby; R. J. Laureijs; C. R. Lawrence; J. P. Leahy; R. Leonardi; J. Lesgourgues; M. Liguori; P. B. Lilje; M. Linden-Vørnle; M. López-Caniego; P. M. Lubin; J. F. Maciás-Pérez; B. Maffei; D. Maino; N. Mandolesi; M. Maris; D. J. Marshall; P. G. Martin; E. Martínez-González; S. Masi; S. Matarrese; F. Matthai; P. Mazzotta; J. D. Mcewen; A. Melchiorri; L. Mendes; A. Mennella; M. Migliaccio; S. Mitra; M. A. Miville-Deschênes; A. Moneti; L. Montier; G. Morgante; D. Mortlock; A. Moss; D. Munshi; P. Naselsky; P. Natoli; C. B. Netterfield; H. U. Nørgaard-Nielsen; F. Noviello; D. Novikov; I. Novikov; S. Osborne; C. A. Oxborrow; F. Paci; L. Pagano; F. Pajot; D. Paoletti; F. Pasian; G. Patanchon; H. V. Peiris; O. Perdereau; L. Perotto; F. Perrotta; F. Piacentini; M. Piat; E. Pierpaoli; D. Pietrobon; S. Plaszczynski; E. Pointecouteau; G. Polenta; N. Ponthieu; L. Popa; T. Poutanen; G. W. Pratt; G. Prézeau; S. Prunet; J. L. Puget; J. P. Rachen; C. Räth; R. Rebolo; M. Remazeilles; C. Renault; S. Ricciardi; T. Riller; C. Ringeval; I. Ristorcelli; G. Rocha; C. Rosset; G. Roudier; M. Rowan-Robinson; B. Rusholme; M. Sandri; D. Santos; G. Savini; D. Scott; M. D. Seiffert; E. P.S. Shellard; L. D. Spencer; J. L. Starck; V. Stolyarov; R. Stompor; R. Sudiwala; F. Sureau; D. Sutton; A. S. Suur-Uski; J. F. Sygnet; J. A. Tauber; D. Tavagnacco; L. Terenzi; L. Toffolatti; M. Tomasi; M. Tristram; M. Tucci; J. Tuovinen; L. Valenziano; J. Valiviita; B. Van Tent; J. Varis; P. Vielva; F. Villa; N. Vittorio; L. A. Wade; B. D. Wandelt; D. Yvon; A. Zacchei; A. Zonca

doi:10.1051/0004-6361/201321621

Planck 2013 results. XXV. Searches for cosmic strings and other topological defects

P. A.R. Ade, N. Aghanim, C. Armitage-Caplan, M. Arnaud, M. Ashdown, F. Atrio-Barandela, J. Aumont, C. Baccigalupi, A. J. Banday, R. B. Barreiro, J. G. Bartlett, N. Bartolo, E. Battaner, R. Battye, K. Benabed, A. Benoît, A. Benoit-Lévy, J. P. Bernard, M. Bersanelli, P. BielewiczJ. Bobin, J. J. Bock, A. Bonaldi, L. Bonavera, J. R. Bond, J. Borrill, F. R. Bouchet, M. Bridges, M. Bucher, C. Burigana, R. C. Butler, J. F. Cardoso, A. Catalano, A. Challinor, A. Chamballu, L. Y. Chiang, H. C. Chiang, P. R. Christensen, S. Church, D. L. Clements, S. Colombi, L. P.L. Colombo, F. Couchot, A. Coulais, B. P. Crill, A. Curto, F. Cuttaia, L. Danese, R. D. Davies, R. J. Davis, P. De Bernardis, A. De Rosa, G. De Zotti, J. Delabrouille, J. M. Delouis, F. X. Désert, J. M. Diego, H. Dole, S. Donzelli, O. Doré, M. Douspis, A. Ducout, J. Dunkley, X. Dupac, G. Efstathiou, T. A. Enßlin, H. K. Eriksen, J. Fergusson, F. Finelli, O. Forni, M. Frailis, E. Franceschi, S. Galeotta, K. Ganga, M. Giard, G. Giardino, Y. Giraud-Héraud, J. González-Nuevo, K. M. Górski, S. Gratton, A. Gregorio, A. Gruppuso, F. K. Hansen, D. Hanson, D. Harrison, S. Henrot-Versillé, C. Hernández-Monteagudo, D. Herranz, S. R. Hildebrandt, E. Hivon, M. Hobson, W. A. Holmes, A. Hornstrup, W. Hovest, K. M. Huffenberger, T. R. Jaffe, A. H. Jaffe, W. C. Jones, M. Juvela, E. Keihänen, R. Keskitalo, T. S. Kisner, J. Knoche, L. Knox, M. Kunz, H. Kurki-Suonio, G. Lagache, A. Lähteenmäki, J. M. Lamarre, A. Lasenby, R. J. Laureijs, C. R. Lawrence, J. P. Leahy, R. Leonardi, J. Lesgourgues, M. Liguori, P. B. Lilje, M. Linden-Vørnle, M. López-Caniego, P. M. Lubin, J. F. Maciás-Pérez, B. Maffei, D. Maino, N. Mandolesi, M. Maris, D. J. Marshall, P. G. Martin, E. Martínez-González, S. Masi, S. Matarrese, F. Matthai, P. Mazzotta, J. D. Mcewen, A. Melchiorri, L. Mendes, A. Mennella, M. Migliaccio, S. Mitra, M. A. Miville-Deschênes, A. Moneti, L. Montier, G. Morgante, D. Mortlock, A. Moss, D. Munshi, P. Naselsky, P. Natoli, C. B. Netterfield, H. U. Nørgaard-Nielsen, F. Noviello, D. Novikov, I. Novikov, S. Osborne, C. A. Oxborrow, F. Paci, L. Pagano, F. Pajot, D. Paoletti, F. Pasian, G. Patanchon, H. V. Peiris, O. Perdereau, L. Perotto, F. Perrotta, F. Piacentini, M. Piat, E. Pierpaoli, D. Pietrobon, S. Plaszczynski, E. Pointecouteau, G. Polenta, N. Ponthieu, L. Popa, T. Poutanen, G. W. Pratt, G. Prézeau, S. Prunet, J. L. Puget, J. P. Rachen, C. Räth, R. Rebolo, M. Remazeilles, C. Renault, S. Ricciardi, T. Riller, C. Ringeval, I. Ristorcelli, G. Rocha, C. Rosset, G. Roudier, M. Rowan-Robinson, B. Rusholme, M. Sandri, D. Santos, G. Savini, D. Scott, M. D. Seiffert, E. P.S. Shellard, L. D. Spencer, J. L. Starck, V. Stolyarov, R. Stompor, R. Sudiwala, F. Sureau, D. Sutton, A. S. Suur-Uski, J. F. Sygnet, J. A. Tauber, D. Tavagnacco, L. Terenzi, L. Toffolatti, M. Tomasi, M. Tristram, M. Tucci, J. Tuovinen, L. Valenziano, J. Valiviita, B. Van Tent, J. Varis, P. Vielva, F. Villa, N. Vittorio, L. A. Wade, B. D. Wandelt, D. Yvon, A. Zacchei, A. Zonca

Physics

Research output: Contribution to journal › Article › peer-review

175 Scopus citations

Abstract

Planck data have been used to provide stringent new constraints on cosmic strings and other defects. We describe forecasts of the CMB power spectrum induced by cosmic strings, calculating these from network models and simulations using line-of-sight Boltzmann solvers. We have studied Nambu-Goto cosmic strings, as well as field theory strings for which radiative effects are important, thus spanning the range of theoretical uncertainty in the underlying strings models. We have added the angular power spectrum from strings to that for a simple adiabatic model, with the extra fraction defined as f₁₀ at multipole = 10. This parameter has been added to the standard six parameter fit using COSMOMC with flat priors. For the Nambu-Goto string model, we have obtained a constraint on the string tension of Gμ/c² < 1.5 × 10^-7 and f₁₀ < 0.015 at 95% confidence that can be improved to Gμ/c² < 1.3 × 10^-7 and f₁₀ < 0.010 on inclusion of high-CMB data. For the Abelian-Higgs field theory model we find, Gμ_AH/c²< 3.2 × 10^-7 and f₁₀ < 0.028. The marginalised likelihoods for f₁₀ and in the f₁₀-Ω_bh² plane are also presented. We have additionally obtained comparable constraints on f₁₀ for models with semilocal strings and global textures. In terms of the effective defect energy scale these are somewhat weaker at Gμ/c² < 1.1 × 10^-6. We have made complementarity searches for the specific non-Gaussian signatures of cosmic strings, calibrating with all-sky Planck resolution CMB maps generated from networks of post-recombination strings. We have validated our non-Gaussian searches using these simulated maps in a Planck-realistic context, estimating sensitivities of up to ΔGμ/c² â‰ 4 × 10^-7. We have obtained upper limits on the string tension at 95% confidence of Gμ/c² < 9.0 × 10^-7 with modal bispectrum estimation and Gμ/c² < 7.8 × 10^-7 for real space searches with Minkowski functionals. These are conservative upper bounds because only post-recombination string contributions have been included in the non-Gaussian analysis.

Original language	English (US)
Article number	A25
Journal	Astronomy and Astrophysics
Volume	571
DOIs	https://doi.org/10.1051/0004-6361/201321621
State	Published - Nov 1 2014

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Cosmic background radiation
Cosmological parameters
Cosmology: observations
Cosmology: theory
Early Universe
Large-scale structure of Universe

Access to Document

10.1051/0004-6361/201321621

Cite this

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., Battye, R., Benabed, K., Benoît, A., Benoit-Lévy, A., Bernard, J. P., Bersanelli, M., ... Zonca, A. (2014). Planck 2013 results. XXV. Searches for cosmic strings and other topological defects. Astronomy and Astrophysics, 571, Article A25. https://doi.org/10.1051/0004-6361/201321621

@article{dd137873747e47179f2357942e6dd70f,

title = "Planck 2013 results. XXV. Searches for cosmic strings and other topological defects",

abstract = "Planck data have been used to provide stringent new constraints on cosmic strings and other defects. We describe forecasts of the CMB power spectrum induced by cosmic strings, calculating these from network models and simulations using line-of-sight Boltzmann solvers. We have studied Nambu-Goto cosmic strings, as well as field theory strings for which radiative effects are important, thus spanning the range of theoretical uncertainty in the underlying strings models. We have added the angular power spectrum from strings to that for a simple adiabatic model, with the extra fraction defined as f10 at multipole = 10. This parameter has been added to the standard six parameter fit using COSMOMC with flat priors. For the Nambu-Goto string model, we have obtained a constraint on the string tension of Gμ/c2 < 1.5 × 10-7 and f10 < 0.015 at 95% confidence that can be improved to Gμ/c2 < 1.3 × 10-7 and f10 < 0.010 on inclusion of high-CMB data. For the Abelian-Higgs field theory model we find, GμAH/c2< 3.2 × 10-7 and f10 < 0.028. The marginalised likelihoods for f10 and in the f10-Ωbh2 plane are also presented. We have additionally obtained comparable constraints on f10 for models with semilocal strings and global textures. In terms of the effective defect energy scale these are somewhat weaker at Gμ/c2 < 1.1 × 10-6. We have made complementarity searches for the specific non-Gaussian signatures of cosmic strings, calibrating with all-sky Planck resolution CMB maps generated from networks of post-recombination strings. We have validated our non-Gaussian searches using these simulated maps in a Planck-realistic context, estimating sensitivities of up to ΔGμ/c2 {\^a}‰ 4 × 10-7. We have obtained upper limits on the string tension at 95% confidence of Gμ/c2 < 9.0 × 10-7 with modal bispectrum estimation and Gμ/c2 < 7.8 × 10-7 for real space searches with Minkowski functionals. These are conservative upper bounds because only post-recombination string contributions have been included in the non-Gaussian analysis.",

keywords = "Cosmic background radiation, Cosmological parameters, Cosmology: observations, Cosmology: theory, Early Universe, Large-scale structure of Universe",

author = "Ade, {P. A.R.} and N. Aghanim and C. Armitage-Caplan and M. Arnaud and M. Ashdown and F. Atrio-Barandela and J. Aumont and C. Baccigalupi and Banday, {A. J.} and Barreiro, {R. B.} and Bartlett, {J. G.} and N. Bartolo and E. Battaner and R. Battye and K. Benabed and A. Beno{\^i}t and A. Benoit-L{\'e}vy and Bernard, {J. P.} and M. Bersanelli and P. Bielewicz and J. Bobin and Bock, {J. J.} and A. Bonaldi and L. Bonavera and Bond, {J. R.} and J. Borrill and Bouchet, {F. R.} and M. Bridges and M. Bucher and C. Burigana and Butler, {R. C.} and Cardoso, {J. F.} and A. Catalano and A. Challinor and A. Chamballu and Chiang, {L. Y.} and Chiang, {H. C.} and Christensen, {P. R.} and S. Church and Clements, {D. L.} and S. Colombi and Colombo, {L. P.L.} and F. Couchot and A. Coulais and Crill, {B. P.} and A. Curto and F. Cuttaia and L. Danese and Davies, {R. D.} and Davis, {R. J.} and {De Bernardis}, P. and {De Rosa}, A. and {De Zotti}, G. and J. Delabrouille and Delouis, {J. M.} and D{\'e}sert, {F. X.} and Diego, {J. M.} and H. Dole and S. Donzelli and O. Dor{\'e} and M. Douspis and A. Ducout and J. Dunkley and X. Dupac and G. Efstathiou and En{\ss}lin, {T. A.} and Eriksen, {H. K.} and J. Fergusson and F. Finelli and O. Forni and M. Frailis and E. Franceschi and S. Galeotta and K. Ganga and M. Giard and G. Giardino and Y. Giraud-H{\'e}raud and J. Gonz{\'a}lez-Nuevo and G{\'o}rski, {K. M.} and S. Gratton and A. Gregorio and A. Gruppuso and Hansen, {F. K.} and D. Hanson and D. Harrison and S. Henrot-Versill{\'e} and C. Hern{\'a}ndez-Monteagudo and D. Herranz and Hildebrandt, {S. R.} and E. Hivon and M. Hobson and Holmes, {W. A.} and A. Hornstrup and W. Hovest and Huffenberger, {K. M.} and Jaffe, {T. R.} and Jaffe, {A. H.} and Jones, {W. C.} and M. Juvela and E. Keih{\"a}nen and R. Keskitalo and Kisner, {T. S.} and J. Knoche and L. Knox and M. Kunz and H. Kurki-Suonio and G. Lagache and A. L{\"a}hteenm{\"a}ki and Lamarre, {J. M.} and A. Lasenby and Laureijs, {R. J.} and Lawrence, {C. R.} and Leahy, {J. P.} and R. Leonardi and J. Lesgourgues and M. Liguori and Lilje, {P. B.} and M. Linden-V{\o}rnle and M. L{\'o}pez-Caniego and Lubin, {P. M.} and Maci{\'a}s-P{\'e}rez, {J. F.} and B. Maffei and D. Maino and N. Mandolesi and M. Maris and Marshall, {D. J.} and Martin, {P. G.} and E. Mart{\'i}nez-Gonz{\'a}lez and S. Masi and S. Matarrese and F. Matthai and P. Mazzotta and Mcewen, {J. D.} and A. Melchiorri and L. Mendes and A. Mennella and M. Migliaccio and S. Mitra and Miville-Desch{\^e}nes, {M. A.} and A. Moneti and L. Montier and G. Morgante and D. Mortlock and A. Moss and D. Munshi and P. Naselsky and P. Natoli and Netterfield, {C. B.} and N{\o}rgaard-Nielsen, {H. U.} and F. Noviello and D. Novikov and I. Novikov and S. Osborne and Oxborrow, {C. A.} and F. Paci and L. Pagano and F. Pajot and D. Paoletti and F. Pasian and G. Patanchon and Peiris, {H. V.} and O. Perdereau and L. Perotto and F. Perrotta and F. Piacentini and M. Piat and E. Pierpaoli and D. Pietrobon and S. Plaszczynski and E. Pointecouteau and G. Polenta and N. Ponthieu and L. Popa and T. Poutanen and Pratt, {G. W.} and G. Pr{\'e}zeau and S. Prunet and Puget, {J. L.} and Rachen, {J. P.} and C. R{\"a}th and R. Rebolo and M. Remazeilles and C. Renault and S. Ricciardi and T. Riller and C. Ringeval and I. Ristorcelli and G. Rocha and C. Rosset and G. Roudier and M. Rowan-Robinson and B. Rusholme and M. Sandri and D. Santos and G. Savini and D. Scott and Seiffert, {M. D.} and Shellard, {E. P.S.} and Spencer, {L. D.} and Starck, {J. L.} and V. Stolyarov and R. Stompor and R. Sudiwala and F. Sureau and D. Sutton and Suur-Uski, {A. S.} and Sygnet, {J. F.} and Tauber, {J. A.} and D. Tavagnacco and L. Terenzi and L. Toffolatti and M. Tomasi and M. Tristram and M. Tucci and J. Tuovinen and L. Valenziano and J. Valiviita and {Van Tent}, B. and J. Varis and P. Vielva and F. Villa and N. Vittorio and Wade, {L. A.} and Wandelt, {B. D.} and D. Yvon and A. Zacchei and A. Zonca",

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year = "2014",

month = nov,

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doi = "10.1051/0004-6361/201321621",

language = "English (US)",

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Ade, PAR, Aghanim, N, Armitage-Caplan, C, Arnaud, M, Ashdown, M, Atrio-Barandela, F, Aumont, J, Baccigalupi, C, Banday, AJ, Barreiro, RB, Bartlett, JG, Bartolo, N, Battaner, E, Battye, R, Benabed, K, Benoît, A, Benoit-Lévy, A, Bernard, JP, Bersanelli, M, Bielewicz, P, Bobin, J, Bock, JJ, Bonaldi, A, Bonavera, L, Bond, JR, Borrill, J, Bouchet, FR, Bridges, M, Bucher, M, Burigana, C, Butler, RC, Cardoso, JF, Catalano, A, Challinor, A, Chamballu, A, Chiang, LY, Chiang, HC, Christensen, PR, Church, S, Clements, DL, Colombi, S, Colombo, LPL, Couchot, F, Coulais, A, Crill, BP, Curto, A, Cuttaia, F, Danese, L, Davies, RD, Davis, RJ, De Bernardis, P, De Rosa, A, De Zotti, G, Delabrouille, J, Delouis, JM, Désert, FX, Diego, JM, Dole, H, Donzelli, S, Doré, O, Douspis, M, Ducout, A, Dunkley, J, Dupac, X, Efstathiou, G, Enßlin, TA, Eriksen, HK, Fergusson, J, Finelli, F, Forni, O, Frailis, M, Franceschi, E, Galeotta, S, Ganga, K, Giard, M, Giardino, G, Giraud-Héraud, Y, González-Nuevo, J, Górski, KM, Gratton, S, Gregorio, A, Gruppuso, A, Hansen, FK, Hanson, D, Harrison, D, Henrot-Versillé, S, Hernández-Monteagudo, C, Herranz, D, Hildebrandt, SR, Hivon, E, Hobson, M, Holmes, WA, Hornstrup, A, Hovest, W, Huffenberger, KM, Jaffe, TR, Jaffe, AH, Jones, WC, Juvela, M, Keihänen, E, Keskitalo, R, Kisner, TS, Knoche, J, Knox, L, Kunz, M, Kurki-Suonio, H, Lagache, G, Lähteenmäki, A, Lamarre, JM, Lasenby, A, Laureijs, RJ, Lawrence, CR, Leahy, JP, Leonardi, R, Lesgourgues, J, Liguori, M, Lilje, PB, Linden-Vørnle, M, López-Caniego, M, Lubin, PM, Maciás-Pérez, JF, Maffei, B, Maino, D, Mandolesi, N, Maris, M, Marshall, DJ, Martin, PG, Martínez-González, E, Masi, S, Matarrese, S, Matthai, F, Mazzotta, P, Mcewen, JD, Melchiorri, A, Mendes, L, Mennella, A, Migliaccio, M, Mitra, S, Miville-Deschênes, MA, Moneti, A, Montier, L, Morgante, G, Mortlock, D, Moss, A, Munshi, D, Naselsky, P, Natoli, P, Netterfield, CB, Nørgaard-Nielsen, HU, Noviello, F, Novikov, D, Novikov, I, Osborne, S, Oxborrow, CA, Paci, F, Pagano, L, Pajot, F, Paoletti, D, Pasian, F, Patanchon, G, Peiris, HV, Perdereau, O, Perotto, L, Perrotta, F, Piacentini, F, Piat, M, Pierpaoli, E, Pietrobon, D, Plaszczynski, S, Pointecouteau, E, Polenta, G, Ponthieu, N, Popa, L, Poutanen, T, Pratt, GW, Prézeau, G, Prunet, S, Puget, JL, Rachen, JP, Räth, C, Rebolo, R, Remazeilles, M, Renault, C, Ricciardi, S, Riller, T, Ringeval, C, Ristorcelli, I, Rocha, G, Rosset, C, Roudier, G, Rowan-Robinson, M, Rusholme, B, Sandri, M, Santos, D, Savini, G, Scott, D, Seiffert, MD, Shellard, EPS, Spencer, LD, Starck, JL, Stolyarov, V, Stompor, R, Sudiwala, R, Sureau, F, Sutton, D, Suur-Uski, AS, Sygnet, JF, Tauber, JA, Tavagnacco, D, Terenzi, L, Toffolatti, L, Tomasi, M, Tristram, M, Tucci, M, Tuovinen, J, Valenziano, L, Valiviita, J, Van Tent, B, Varis, J, Vielva, P, Villa, F, Vittorio, N, Wade, LA, Wandelt, BD, Yvon, D, Zacchei, A & Zonca, A 2014, 'Planck 2013 results. XXV. Searches for cosmic strings and other topological defects', Astronomy and Astrophysics, vol. 571, A25. https://doi.org/10.1051/0004-6361/201321621

TY - JOUR

T1 - Planck 2013 results. XXV. Searches for cosmic strings and other topological defects

AU - Ade, P. A.R.

AU - Aghanim, N.

AU - Armitage-Caplan, C.

AU - Arnaud, M.

AU - Ashdown, M.

AU - Atrio-Barandela, F.

AU - Aumont, J.

AU - Baccigalupi, C.

AU - Banday, A. J.

AU - Barreiro, R. B.

AU - Bartlett, J. G.

AU - Bartolo, N.

AU - Battaner, E.

AU - Battye, R.

AU - Benabed, K.

AU - Benoît, A.

AU - Benoit-Lévy, A.

AU - Bernard, J. P.

AU - Bersanelli, M.

AU - Bielewicz, P.

AU - Bobin, J.

AU - Bock, J. J.

AU - Bonaldi, A.

AU - Bonavera, L.

AU - Bond, J. R.

AU - Borrill, J.

AU - Bouchet, F. R.

AU - Bridges, M.

AU - Bucher, M.

AU - Burigana, C.

AU - Butler, R. C.

AU - Cardoso, J. F.

AU - Catalano, A.

AU - Challinor, A.

AU - Chamballu, A.

AU - Chiang, L. Y.

AU - Chiang, H. C.

AU - Christensen, P. R.

AU - Church, S.

AU - Clements, D. L.

AU - Colombi, S.

AU - Colombo, L. P.L.

AU - Couchot, F.

AU - Coulais, A.

AU - Crill, B. P.

AU - Curto, A.

AU - Cuttaia, F.

AU - Danese, L.

AU - Davies, R. D.

AU - Davis, R. J.

AU - De Bernardis, P.

AU - De Rosa, A.

AU - De Zotti, G.

AU - Delabrouille, J.

AU - Delouis, J. M.

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PY - 2014/11/1

Y1 - 2014/11/1

N2 - Planck data have been used to provide stringent new constraints on cosmic strings and other defects. We describe forecasts of the CMB power spectrum induced by cosmic strings, calculating these from network models and simulations using line-of-sight Boltzmann solvers. We have studied Nambu-Goto cosmic strings, as well as field theory strings for which radiative effects are important, thus spanning the range of theoretical uncertainty in the underlying strings models. We have added the angular power spectrum from strings to that for a simple adiabatic model, with the extra fraction defined as f10 at multipole = 10. This parameter has been added to the standard six parameter fit using COSMOMC with flat priors. For the Nambu-Goto string model, we have obtained a constraint on the string tension of Gμ/c2 < 1.5 × 10-7 and f10 < 0.015 at 95% confidence that can be improved to Gμ/c2 < 1.3 × 10-7 and f10 < 0.010 on inclusion of high-CMB data. For the Abelian-Higgs field theory model we find, GμAH/c2< 3.2 × 10-7 and f10 < 0.028. The marginalised likelihoods for f10 and in the f10-Ωbh2 plane are also presented. We have additionally obtained comparable constraints on f10 for models with semilocal strings and global textures. In terms of the effective defect energy scale these are somewhat weaker at Gμ/c2 < 1.1 × 10-6. We have made complementarity searches for the specific non-Gaussian signatures of cosmic strings, calibrating with all-sky Planck resolution CMB maps generated from networks of post-recombination strings. We have validated our non-Gaussian searches using these simulated maps in a Planck-realistic context, estimating sensitivities of up to ΔGμ/c2 â‰ 4 × 10-7. We have obtained upper limits on the string tension at 95% confidence of Gμ/c2 < 9.0 × 10-7 with modal bispectrum estimation and Gμ/c2 < 7.8 × 10-7 for real space searches with Minkowski functionals. These are conservative upper bounds because only post-recombination string contributions have been included in the non-Gaussian analysis.

AB - Planck data have been used to provide stringent new constraints on cosmic strings and other defects. We describe forecasts of the CMB power spectrum induced by cosmic strings, calculating these from network models and simulations using line-of-sight Boltzmann solvers. We have studied Nambu-Goto cosmic strings, as well as field theory strings for which radiative effects are important, thus spanning the range of theoretical uncertainty in the underlying strings models. We have added the angular power spectrum from strings to that for a simple adiabatic model, with the extra fraction defined as f10 at multipole = 10. This parameter has been added to the standard six parameter fit using COSMOMC with flat priors. For the Nambu-Goto string model, we have obtained a constraint on the string tension of Gμ/c2 < 1.5 × 10-7 and f10 < 0.015 at 95% confidence that can be improved to Gμ/c2 < 1.3 × 10-7 and f10 < 0.010 on inclusion of high-CMB data. For the Abelian-Higgs field theory model we find, GμAH/c2< 3.2 × 10-7 and f10 < 0.028. The marginalised likelihoods for f10 and in the f10-Ωbh2 plane are also presented. We have additionally obtained comparable constraints on f10 for models with semilocal strings and global textures. In terms of the effective defect energy scale these are somewhat weaker at Gμ/c2 < 1.1 × 10-6. We have made complementarity searches for the specific non-Gaussian signatures of cosmic strings, calibrating with all-sky Planck resolution CMB maps generated from networks of post-recombination strings. We have validated our non-Gaussian searches using these simulated maps in a Planck-realistic context, estimating sensitivities of up to ΔGμ/c2 â‰ 4 × 10-7. We have obtained upper limits on the string tension at 95% confidence of Gμ/c2 < 9.0 × 10-7 with modal bispectrum estimation and Gμ/c2 < 7.8 × 10-7 for real space searches with Minkowski functionals. These are conservative upper bounds because only post-recombination string contributions have been included in the non-Gaussian analysis.

KW - Cosmic background radiation

KW - Cosmological parameters

KW - Cosmology: observations

KW - Cosmology: theory

KW - Early Universe

KW - Large-scale structure of Universe

UR - http://www.scopus.com/inward/record.url?scp=84908502896&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84908502896&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201321621

DO - 10.1051/0004-6361/201321621

M3 - Article

AN - SCOPUS:84908502896

SN - 0004-6361

VL - 571

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A25

ER -

Planck 2013 results. XXV. Searches for cosmic strings and other topological defects

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