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@article{Ade:2015:10.1103/PhysRevD.92.123509,
author = {Ade, PAR and Arnold, K and Atlas, M and Baccigalupi, C and Barron, D and Boettger, D and Borrill, J and Chapman, S and Chinone, Y and Cukierman, A and Dobbs, M and Ducout, A and Dunner, R and Elleflot, T and Errard, J and Fabbian, G and Feeney, S and Feng, C and Gilbert, A and Goeckner-Wald, N and Groh, J and Hall, G and Halverson, NW and Hasegawa, M and Hattori, K and Hazumi, M and Hill, C and Holzapfel, WL and Hori, Y and Howe, L and Inoue, Y and Jaehnig, GC and Jaffe, AH and Jeong, O and Katayama, N and Kaufman, JP and Keating, B and Kermish, Z and Keskitalo, R and Kisner, T and Kusaka, A and Le, Jeune M and Lee, AT and Leitch, EM and Leon, D and Li, Y and Linder, E and Lowry, L and Matsuda, F and Matsumura, T and Miller, N and Montgomery, J and Myers, MJ and Navaroli, M and Nishino, H and Okamura, T and Paar, H and Peloton, J and Pogosian, L and Poletti, D and Puglisi, G and Raum, C and Rebeiz, G and Reichardt, CL and Richards, PL and Ross, C and Rotermund, KM and Schenck, DE and S},
doi = {10.1103/PhysRevD.92.123509},
journal = {Physical Review D},
title = {POLARBEAR constraints on cosmic birefringence and primordial magnetic fields},
url = {http://dx.doi.org/10.1103/PhysRevD.92.123509},
volume = {92},
year = {2015}
}

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TY  - JOUR
AB  - We constrain anisotropic cosmic birefringence using four-point correlations of even-parity E-mode and odd-parity B-mode polarization in the cosmic microwave background measurements made by the POLARization of the Background Radiation (POLARBEAR) experiment in its first season of observations. We find that the anisotropic cosmic birefringence signal from any parity-violating processes is consistent with zero. The Faraday rotation from anisotropic cosmic birefringence can be compared with the equivalent quantity generated by primordial magnetic fields if they existed. The POLARBEAR nondetection translates into a 95% confidence level (C.L.) upper limit of 93 nanogauss (nG) on the amplitude of an equivalent primordial magnetic field inclusive of systematic uncertainties. This four-point correlation constraint on Faraday rotation is about 15 times tighter than the upper limit of 1380 nG inferred from constraining the contribution of Faraday rotation to two-point correlations of B-modes measured by Planck in 2015. Metric perturbations sourced by primordial magnetic fields would also contribute to the B-mode power spectrum. Using the POLARBEAR measurements of the B-mode power spectrum (two-point correlation), we set a 95% C.L. upper limit of 3.9 nG on primordial magnetic fields assuming a flat prior on the field amplitude. This limit is comparable to what was found in the Planck 2015 two-point correlation analysis with both temperature and polarization. We perform a set of systematic error tests and find no evidence for contamination. This work marks the first time that anisotropic cosmic birefringence or primordial magnetic fields have been constrained from the ground at subdegree scales.
AU  - Ade,PAR
AU  - Arnold,K
AU  - Atlas,M
AU  - Baccigalupi,C
AU  - Barron,D
AU  - Boettger,D
AU  - Borrill,J
AU  - Chapman,S
AU  - Chinone,Y
AU  - Cukierman,A
AU  - Dobbs,M
AU  - Ducout,A
AU  - Dunner,R
AU  - Elleflot,T
AU  - Errard,J
AU  - Fabbian,G
AU  - Feeney,S
AU  - Feng,C
AU  - Gilbert,A
AU  - Goeckner-Wald,N
AU  - Groh,J
AU  - Hall,G
AU  - Halverson,NW
AU  - Hasegawa,M
AU  - Hattori,K
AU  - Hazumi,M
AU  - Hill,C
AU  - Holzapfel,WL
AU  - Hori,Y
AU  - Howe,L
AU  - Inoue,Y
AU  - Jaehnig,GC
AU  - Jaffe,AH
AU  - Jeong,O
AU  - Katayama,N
AU  - Kaufman,JP
AU  - Keating,B
AU  - Kermish,Z
AU  - Keskitalo,R
AU  - Kisner,T
AU  - Kusaka,A
AU  - Le,Jeune M
AU  - Lee,AT
AU  - Leitch,EM
AU  - Leon,D
AU  - Li,Y
AU  - Linder,E
AU  - Lowry,L
AU  - Matsuda,F
AU  - Matsumura,T
AU  - Miller,N
AU  - Montgomery,J
AU  - Myers,MJ
AU  - Navaroli,M
AU  - Nishino,H
AU  - Okamura,T
AU  - Paar,H
AU  - Peloton,J
AU  - Pogosian,L
AU  - Poletti,D
AU  - Puglisi,G
AU  - Raum,C
AU  - Rebeiz,G
AU  - Reichardt,CL
AU  - Richards,PL
AU  - Ross,C
AU  - Rotermund,KM
AU  - Schenck,DE
AU  - Sherwin,BD
AU  - Shimon,M
AU  - Shirley,I
AU  - Siritanasak,P
AU  - Smecher,G
AU  - Stebor,N
AU  - Steinbach,B
AU  - Suzuki,A
AU  - Suzuki,J-I
AU  - Tajima,O
AU  - Takakura,S
AU  - Tikhomirov,A
AU  - Tomaru,T
AU  - Whitehorn,N
AU  - Wilson,B
AU  - Yadav,A
AU  - Zahn,A
AU  - Zahn,O
DO  - 10.1103/PhysRevD.92.123509
PY  - 2015///
SN  - 1550-7998
TI  - POLARBEAR constraints on cosmic birefringence and primordial magnetic fields
T2  - Physical Review D
UR  - http://dx.doi.org/10.1103/PhysRevD.92.123509
UR  - http://hdl.handle.net/10044/1/32999
VL  - 92
ER  -

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