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Planck intermediate results. XLIX. Parity-violation constraints from polarization data

Aghanim, N.; Ashdown, M.; Aumont, J.; Baccigalupi, C.; Ballardini, M.; Banday, A.J.; Barreiro, R.B.; Bartolo, N.; Basak, S.; Benabed, K.; Bernard, J.-P.; Bersanelli, M.; Bielewicz, P.; Bonavera, L.; Bond, J.R.; Borrill, J.; Bouchet, F.R.; Burigana, C.; Calabrese, E.; Cardoso, J.-F.; Carron, J.; Chiang, H.C.; Colombo, L.P.L.; Comis, B.; Contreras, D.; Couchot, F.; Coulais, A.; Crill, B.P.; Curto, A.; Cuttaia, F.; de Bernardis, P.; de Rosa, A.; de Zotti, G.; Delabrouille, J.; D?sert, F.-X.; Di Valentino, E.; Dickinson, C.; Diego, J.M.; Dor?, O.; Ducout, A.; Dupac, X.; Dusini, S.; Elsner, F.; En?lin, T.A.; Eriksen, H.K.; Fantaye, Y.; Finelli, F.; Forastieri, F.; Frailis, M.; Franceschi, E.; Frolov, A.; Galeotta, S.; Galli, S.; Ganga, K.; G?nova-Santos, R.T.; Gerbino, M.; Giraud-H?raud, Y.; Gonz?lez-Nuevo, J.; G?rski, K.M.; Gruppuso, A.; Gudmundsson, J.E.; Hansen, F.K.; Henrot-Versill?, S.; Herranz, D.; Hivon, E.; Huang, Z.; Jaffe, A.H.; Jones, W.C.; Keih?nen, E.; Keskitalo, R.; Kiiveri, K...

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N. Aghanim

M. Ashdown

J. Aumont

C. Baccigalupi

M. Ballardini

A.J. Banday

R.B. Barreiro

N. Bartolo

S. Basak

K. Benabed

J.-P. Bernard

M. Bersanelli

P. Bielewicz

L. Bonavera

J.R. Bond

J. Borrill

F.R. Bouchet

C. Burigana

E. Calabrese

J.-F. Cardoso

J. Carron

H.C. Chiang

L.P.L. Colombo

B. Comis

D. Contreras

F. Couchot

A. Coulais

B.P. Crill

A. Curto

F. Cuttaia

P. de Bernardis

A. de Rosa

G. de Zotti

J. Delabrouille

F.-X. D�sert

E. Di Valentino

C. Dickinson

J.M. Diego

O. Dor�

A. Ducout

X. Dupac

S. Dusini

F. Elsner

T.A. En�lin

H.K. Eriksen

Y. Fantaye

F. Finelli

F. Forastieri

M. Frailis

E. Franceschi

A. Frolov

S. Galeotta

S. Galli

K. Ganga

R.T. G�nova-Santos

M. Gerbino

Y. Giraud-H�raud

J. Gonz�lez-Nuevo

K.M. G�rski

A. Gruppuso

J.E. Gudmundsson

F.K. Hansen

S. Henrot-Versill�

D. Herranz

E. Hivon

Z. Huang

A.H. Jaffe

W.C. Jones

E. Keih�nen

R. Keskitalo

K. Kiiveri

N. Krachmalnicoff

M. Kunz

H. Kurki-Suonio

J.-M. Lamarre

M. Langer

A. Lasenby

M. Lattanzi

C.R. Lawrence

M. Le Jeune

J.P. Leahy

F. Levrier

M. Liguori

P.B. Lilje

V. Lindholm

M. L�pez-Caniego

Y.-Z. Ma

J.F. Mac�as-P�rez

G. Maggio

D. Maino

N. Mandolesi

M. Maris

P.G. Martin

E. Mart�nez-Gonz�lez

S. Matarrese

N. Mauri

J.D. McEwen

P.R. Meinhold

A. Melchiorri

A. Mennella

M. Migliaccio

M.-A. Miville-Desch�nes

D. Molinari

A. Moneti

G. Morgante

Associate Professor

P. Natoli

L. Pagano

D. Paoletti

G. Patanchon

L. Patrizii

L. Perotto

V. Pettorino

F. Piacentini

L. Polastri

G. Polenta

J. P. Rachen

B. Racine

M. Reinecke

M. Remazeilles

A. Renzi

G. Rocha

C. Rosset

M. Rossetti

G. Roudier

J.A. Rubi�o-Mart�n

B. Ruiz-Granados

M. Sandri

M. Savelainen

D. Scott

C. Sirignano

G. Sirri

L.D. Spencer

A.-S. Suur-Uski

J.A. Tauber

D. Tavagnacco

M. Tenti

L. Toffolatti

M. Tomasi

M. Tristram

T. Trombetti

J. Valiviita

F. Van Tent

P. Vielva

F. Villa

N. Vittorio

B.D. Wandelt

I.K. Wehus

A. Zacchei

A. Zonca


Parity-violating extensions of the standard electromagnetic theory cause in vacuo rotation of the plane of polarization of propagating photons. This effect, also known as cosmic birefringence, has an impact on the cosmic microwave background (CMB) anisotropy angular power spectra, producing non-vanishing T–B and E–B correlations that are otherwise null when parity is a symmetry. Here we present new constraints on an isotropic rotation, parametrized by the angle α, derived from Planck 2015 CMB polarization data. To increase the robustness of our analyses, we employ two complementary approaches, in harmonic space and in map space, the latter based on a peak stacking technique. The two approaches provide estimates for α that are in agreement within statistical uncertainties and are very stable against several consistency tests.Considering the T–B and E–B information jointly, we find from the harmonic analysis and from the stacking approach. These constraints are compatible with no parity violation and are dominated by the systematic uncertainty in the orientation of Planck’s polarization-sensitive bolometers.


Aghanim, N., Ashdown, M., Aumont, J., Baccigalupi, C., Ballardini, M., Banday, A., …Zonca, A. (in press). Planck intermediate results. XLIX. Parity-violation constraints from polarization data. Astronomy and Astrophysics, 596, Article A110.

Journal Article Type Article
Acceptance Date Aug 4, 2016
Online Publication Date Dec 12, 2016
Deposit Date Apr 28, 2017
Publicly Available Date Apr 28, 2017
Journal Astronomy & Astrophysics
Electronic ISSN 1432-0746
Publisher EDP Sciences
Peer Reviewed Peer Reviewed
Volume 596
Article Number A110
Keywords cosmology: observations / cosmic background radiation / cosmological parameters' methods: data analysis; methods: statistical
Public URL
Publisher URL
Contract Date Apr 28, 2017


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